upload android base code part7

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August 2018-08-08 18:09:17 +08:00
parent 4e516ec6ed
commit 841ae54672
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<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright 2013 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.android.textswitcher"
android:versionCode="1"
android:versionName="1.0" >
<!-- Min/target SDK versions (<uses-sdk>) managed by build.gradle -->
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

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page.tags="TextSwitcher"
sample.group=UI
@jd:body
<p>
This sample illustrates the use of a TextSwitcher to display text.
\n\nClick the button below to set new text in the TextSwitcher and observe the
in and out fade animations.
</p>

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<!--
Copyright 2013 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="top|center_horizontal"
android:gravity="center_horizontal"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/intro" />
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/next" />
<TextSwitcher
android:id="@+id/switcher"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</LinearLayout>

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<!--
Copyright 2013 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<resources>
<!--
Customize dimensions originally defined in res/values/dimens.xml (such as
screen margins) for sw600dp devices (e.g. 7" tablets) here.
-->
</resources>

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<!--
Copyright 2013 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<resources>
<!-- Semantic definitions -->
<dimen name="horizontal_page_margin">@dimen/margin_huge</dimen>
<dimen name="vertical_page_margin">@dimen/margin_medium</dimen>
</resources>

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<!--
Copyright 2013 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<resources>
<style name="Widget.SampleMessage">
<item name="android:textAppearance">?android:textAppearanceLarge</item>
<item name="android:lineSpacingMultiplier">1.2</item>
<item name="android:shadowDy">-6.5</item>
</style>
</resources>

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<!--
Copyright 2013 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<resources>
<!--
Customize dimensions originally defined in res/values/dimens.xml (such as
screen margins) for sw720dp devices (e.g. 10" tablets) in landscape here.
-->
<dimen name="activity_horizontal_margin">128dp</dimen>
</resources>

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<!--
Copyright 2013 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<resources>
<!--
Base application theme for API 11+. This theme completely replaces
AppBaseTheme from res/values/styles.xml on API 11+ devices.
-->
<style name="AppBaseTheme" parent="android:Theme.Holo.Light">
<!-- API 11 theme customizations can go here. -->
</style>
</resources>

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<!--
Copyright 2013 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<resources>
<!-- Activity themes -->
<style name="Theme.Base" parent="android:Theme.Holo.Light" />
</resources>

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<!--
Copyright 2013 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<resources>
<!--
Base application theme for API 14+. This theme completely replaces
AppBaseTheme from BOTH res/values/styles.xml and
res/values-v11/styles.xml on API 14+ devices.
-->
<style name="AppBaseTheme" parent="android:Theme.Holo.Light.DarkActionBar">
<!-- API 14 theme customizations can go here. -->
</style>
</resources>

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<?xml version="1.0" encoding="UTF-8"?>
<!--
Copyright 2013 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<resources>
</resources>

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<?xml version="1.0" encoding="UTF-8"?>
<!--
Copyright 2013 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<resources>
<!-- Activity themes -->
<style name="Theme.Base" parent="android:Theme.Material.Light">
</style>
</resources>

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<?xml version="1.0" encoding="UTF-8"?>
<!--
Copyright 2013 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<resources>
<string name="app_name">TextSwitcher</string>
<string name="intro_message">
<![CDATA[
This sample illustrates the use of a TextSwitcher to display text.
\n\nClick the button below to set new text in the TextSwitcher and observe the
in and out fade animations.
]]>
</string>
</resources>

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<!--
Copyright 2013 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<resources>
<!-- Default screen margins, per the Android Design guidelines. -->
<dimen name="activity_horizontal_margin">16dp</dimen>
<dimen name="activity_vertical_margin">16dp</dimen>
</resources>

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<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright 2013 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<resources>
<string name="intro">This sample illustrates the use of a <b>TextSwitcher</b> to display text.
\n\n<b>Click the button</b> below to set new text in the TextSwitcher and observe the in and out
fade animations.</string>
<string name="next">Next</string>
</resources>

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<!--
Copyright 2013 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<resources>
<!-- Define standard dimensions to comply with Holo-style grids and rhythm. -->
<dimen name="margin_tiny">4dp</dimen>
<dimen name="margin_small">8dp</dimen>
<dimen name="margin_medium">16dp</dimen>
<dimen name="margin_large">32dp</dimen>
<dimen name="margin_huge">64dp</dimen>
<!-- Semantic definitions -->
<dimen name="horizontal_page_margin">@dimen/margin_medium</dimen>
<dimen name="vertical_page_margin">@dimen/margin_medium</dimen>
</resources>

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<!--
Copyright 2013 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<resources>
<!-- Activity themes -->
<style name="Theme.Base" parent="android:Theme.Light" />
<style name="Theme.Sample" parent="Theme.Base" />
<style name="AppTheme" parent="Theme.Sample" />
<!-- Widget styling -->
<style name="Widget" />
<style name="Widget.SampleMessage">
<item name="android:textAppearance">?android:textAppearanceMedium</item>
<item name="android:lineSpacingMultiplier">1.1</item>
</style>
<style name="Widget.SampleMessageTile">
<item name="android:background">@drawable/tile</item>
<item name="android:shadowColor">#7F000000</item>
<item name="android:shadowDy">-3.5</item>
<item name="android:shadowRadius">2</item>
</style>
</resources>

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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.android.common.logger;
/**
* Helper class for a list (or tree) of LoggerNodes.
*
* <p>When this is set as the head of the list,
* an instance of it can function as a drop-in replacement for {@link android.util.Log}.
* Most of the methods in this class server only to map a method call in Log to its equivalent
* in LogNode.</p>
*/
public class Log {
// Grabbing the native values from Android's native logging facilities,
// to make for easy migration and interop.
public static final int NONE = -1;
public static final int VERBOSE = android.util.Log.VERBOSE;
public static final int DEBUG = android.util.Log.DEBUG;
public static final int INFO = android.util.Log.INFO;
public static final int WARN = android.util.Log.WARN;
public static final int ERROR = android.util.Log.ERROR;
public static final int ASSERT = android.util.Log.ASSERT;
// Stores the beginning of the LogNode topology.
private static LogNode mLogNode;
/**
* Returns the next LogNode in the linked list.
*/
public static LogNode getLogNode() {
return mLogNode;
}
/**
* Sets the LogNode data will be sent to.
*/
public static void setLogNode(LogNode node) {
mLogNode = node;
}
/**
* Instructs the LogNode to print the log data provided. Other LogNodes can
* be chained to the end of the LogNode as desired.
*
* @param priority Log level of the data being logged. Verbose, Error, etc.
* @param tag Tag for for the log data. Can be used to organize log statements.
* @param msg The actual message to be logged.
* @param tr If an exception was thrown, this can be sent along for the logging facilities
* to extract and print useful information.
*/
public static void println(int priority, String tag, String msg, Throwable tr) {
if (mLogNode != null) {
mLogNode.println(priority, tag, msg, tr);
}
}
/**
* Instructs the LogNode to print the log data provided. Other LogNodes can
* be chained to the end of the LogNode as desired.
*
* @param priority Log level of the data being logged. Verbose, Error, etc.
* @param tag Tag for for the log data. Can be used to organize log statements.
* @param msg The actual message to be logged. The actual message to be logged.
*/
public static void println(int priority, String tag, String msg) {
println(priority, tag, msg, null);
}
/**
* Prints a message at VERBOSE priority.
*
* @param tag Tag for for the log data. Can be used to organize log statements.
* @param msg The actual message to be logged.
* @param tr If an exception was thrown, this can be sent along for the logging facilities
* to extract and print useful information.
*/
public static void v(String tag, String msg, Throwable tr) {
println(VERBOSE, tag, msg, tr);
}
/**
* Prints a message at VERBOSE priority.
*
* @param tag Tag for for the log data. Can be used to organize log statements.
* @param msg The actual message to be logged.
*/
public static void v(String tag, String msg) {
v(tag, msg, null);
}
/**
* Prints a message at DEBUG priority.
*
* @param tag Tag for for the log data. Can be used to organize log statements.
* @param msg The actual message to be logged.
* @param tr If an exception was thrown, this can be sent along for the logging facilities
* to extract and print useful information.
*/
public static void d(String tag, String msg, Throwable tr) {
println(DEBUG, tag, msg, tr);
}
/**
* Prints a message at DEBUG priority.
*
* @param tag Tag for for the log data. Can be used to organize log statements.
* @param msg The actual message to be logged.
*/
public static void d(String tag, String msg) {
d(tag, msg, null);
}
/**
* Prints a message at INFO priority.
*
* @param tag Tag for for the log data. Can be used to organize log statements.
* @param msg The actual message to be logged.
* @param tr If an exception was thrown, this can be sent along for the logging facilities
* to extract and print useful information.
*/
public static void i(String tag, String msg, Throwable tr) {
println(INFO, tag, msg, tr);
}
/**
* Prints a message at INFO priority.
*
* @param tag Tag for for the log data. Can be used to organize log statements.
* @param msg The actual message to be logged.
*/
public static void i(String tag, String msg) {
i(tag, msg, null);
}
/**
* Prints a message at WARN priority.
*
* @param tag Tag for for the log data. Can be used to organize log statements.
* @param msg The actual message to be logged.
* @param tr If an exception was thrown, this can be sent along for the logging facilities
* to extract and print useful information.
*/
public static void w(String tag, String msg, Throwable tr) {
println(WARN, tag, msg, tr);
}
/**
* Prints a message at WARN priority.
*
* @param tag Tag for for the log data. Can be used to organize log statements.
* @param msg The actual message to be logged.
*/
public static void w(String tag, String msg) {
w(tag, msg, null);
}
/**
* Prints a message at WARN priority.
*
* @param tag Tag for for the log data. Can be used to organize log statements.
* @param tr If an exception was thrown, this can be sent along for the logging facilities
* to extract and print useful information.
*/
public static void w(String tag, Throwable tr) {
w(tag, null, tr);
}
/**
* Prints a message at ERROR priority.
*
* @param tag Tag for for the log data. Can be used to organize log statements.
* @param msg The actual message to be logged.
* @param tr If an exception was thrown, this can be sent along for the logging facilities
* to extract and print useful information.
*/
public static void e(String tag, String msg, Throwable tr) {
println(ERROR, tag, msg, tr);
}
/**
* Prints a message at ERROR priority.
*
* @param tag Tag for for the log data. Can be used to organize log statements.
* @param msg The actual message to be logged.
*/
public static void e(String tag, String msg) {
e(tag, msg, null);
}
/**
* Prints a message at ASSERT priority.
*
* @param tag Tag for for the log data. Can be used to organize log statements.
* @param msg The actual message to be logged.
* @param tr If an exception was thrown, this can be sent along for the logging facilities
* to extract and print useful information.
*/
public static void wtf(String tag, String msg, Throwable tr) {
println(ASSERT, tag, msg, tr);
}
/**
* Prints a message at ASSERT priority.
*
* @param tag Tag for for the log data. Can be used to organize log statements.
* @param msg The actual message to be logged.
*/
public static void wtf(String tag, String msg) {
wtf(tag, msg, null);
}
/**
* Prints a message at ASSERT priority.
*
* @param tag Tag for for the log data. Can be used to organize log statements.
* @param tr If an exception was thrown, this can be sent along for the logging facilities
* to extract and print useful information.
*/
public static void wtf(String tag, Throwable tr) {
wtf(tag, null, tr);
}
}

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/*
* Copyright 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* Copyright 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.android.common.logger;
import android.graphics.Typeface;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ScrollView;
/**
* Simple fraggment which contains a LogView and uses is to output log data it receives
* through the LogNode interface.
*/
public class LogFragment extends Fragment {
private LogView mLogView;
private ScrollView mScrollView;
public LogFragment() {}
public View inflateViews() {
mScrollView = new ScrollView(getActivity());
ViewGroup.LayoutParams scrollParams = new ViewGroup.LayoutParams(
ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.MATCH_PARENT);
mScrollView.setLayoutParams(scrollParams);
mLogView = new LogView(getActivity());
ViewGroup.LayoutParams logParams = new ViewGroup.LayoutParams(scrollParams);
logParams.height = ViewGroup.LayoutParams.WRAP_CONTENT;
mLogView.setLayoutParams(logParams);
mLogView.setClickable(true);
mLogView.setFocusable(true);
mLogView.setTypeface(Typeface.MONOSPACE);
// Want to set padding as 16 dips, setPadding takes pixels. Hooray math!
int paddingDips = 16;
double scale = getResources().getDisplayMetrics().density;
int paddingPixels = (int) ((paddingDips * (scale)) + .5);
mLogView.setPadding(paddingPixels, paddingPixels, paddingPixels, paddingPixels);
mLogView.setCompoundDrawablePadding(paddingPixels);
mLogView.setGravity(Gravity.BOTTOM);
mLogView.setTextAppearance(getActivity(), android.R.style.TextAppearance_Holo_Medium);
mScrollView.addView(mLogView);
return mScrollView;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View result = inflateViews();
mLogView.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {}
@Override
public void afterTextChanged(Editable s) {
mScrollView.fullScroll(ScrollView.FOCUS_DOWN);
}
});
return result;
}
public LogView getLogView() {
return mLogView;
}
}

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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.android.common.logger;
/**
* Basic interface for a logging system that can output to one or more targets.
* Note that in addition to classes that will output these logs in some format,
* one can also implement this interface over a filter and insert that in the chain,
* such that no targets further down see certain data, or see manipulated forms of the data.
* You could, for instance, write a "ToHtmlLoggerNode" that just converted all the log data
* it received to HTML and sent it along to the next node in the chain, without printing it
* anywhere.
*/
public interface LogNode {
/**
* Instructs first LogNode in the list to print the log data provided.
* @param priority Log level of the data being logged. Verbose, Error, etc.
* @param tag Tag for for the log data. Can be used to organize log statements.
* @param msg The actual message to be logged. The actual message to be logged.
* @param tr If an exception was thrown, this can be sent along for the logging facilities
* to extract and print useful information.
*/
public void println(int priority, String tag, String msg, Throwable tr);
}

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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.android.common.logger;
import android.app.Activity;
import android.content.Context;
import android.util.*;
import android.widget.TextView;
/** Simple TextView which is used to output log data received through the LogNode interface.
*/
public class LogView extends TextView implements LogNode {
public LogView(Context context) {
super(context);
}
public LogView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public LogView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
/**
* Formats the log data and prints it out to the LogView.
* @param priority Log level of the data being logged. Verbose, Error, etc.
* @param tag Tag for for the log data. Can be used to organize log statements.
* @param msg The actual message to be logged. The actual message to be logged.
* @param tr If an exception was thrown, this can be sent along for the logging facilities
* to extract and print useful information.
*/
@Override
public void println(int priority, String tag, String msg, Throwable tr) {
String priorityStr = null;
// For the purposes of this View, we want to print the priority as readable text.
switch(priority) {
case android.util.Log.VERBOSE:
priorityStr = "VERBOSE";
break;
case android.util.Log.DEBUG:
priorityStr = "DEBUG";
break;
case android.util.Log.INFO:
priorityStr = "INFO";
break;
case android.util.Log.WARN:
priorityStr = "WARN";
break;
case android.util.Log.ERROR:
priorityStr = "ERROR";
break;
case android.util.Log.ASSERT:
priorityStr = "ASSERT";
break;
default:
break;
}
// Handily, the Log class has a facility for converting a stack trace into a usable string.
String exceptionStr = null;
if (tr != null) {
exceptionStr = android.util.Log.getStackTraceString(tr);
}
// Take the priority, tag, message, and exception, and concatenate as necessary
// into one usable line of text.
final StringBuilder outputBuilder = new StringBuilder();
String delimiter = "\t";
appendIfNotNull(outputBuilder, priorityStr, delimiter);
appendIfNotNull(outputBuilder, tag, delimiter);
appendIfNotNull(outputBuilder, msg, delimiter);
appendIfNotNull(outputBuilder, exceptionStr, delimiter);
// In case this was originally called from an AsyncTask or some other off-UI thread,
// make sure the update occurs within the UI thread.
((Activity) getContext()).runOnUiThread( (new Thread(new Runnable() {
@Override
public void run() {
// Display the text we just generated within the LogView.
appendToLog(outputBuilder.toString());
}
})));
if (mNext != null) {
mNext.println(priority, tag, msg, tr);
}
}
public LogNode getNext() {
return mNext;
}
public void setNext(LogNode node) {
mNext = node;
}
/** Takes a string and adds to it, with a separator, if the bit to be added isn't null. Since
* the logger takes so many arguments that might be null, this method helps cut out some of the
* agonizing tedium of writing the same 3 lines over and over.
* @param source StringBuilder containing the text to append to.
* @param addStr The String to append
* @param delimiter The String to separate the source and appended strings. A tab or comma,
* for instance.
* @return The fully concatenated String as a StringBuilder
*/
private StringBuilder appendIfNotNull(StringBuilder source, String addStr, String delimiter) {
if (addStr != null) {
if (addStr.length() == 0) {
delimiter = "";
}
return source.append(addStr).append(delimiter);
}
return source;
}
// The next LogNode in the chain.
LogNode mNext;
/** Outputs the string as a new line of log data in the LogView. */
public void appendToLog(String s) {
append("\n" + s);
}
}

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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.android.common.logger;
import android.util.Log;
/**
* Helper class which wraps Android's native Log utility in the Logger interface. This way
* normal DDMS output can be one of the many targets receiving and outputting logs simultaneously.
*/
public class LogWrapper implements LogNode {
// For piping: The next node to receive Log data after this one has done its work.
private LogNode mNext;
/**
* Returns the next LogNode in the linked list.
*/
public LogNode getNext() {
return mNext;
}
/**
* Sets the LogNode data will be sent to..
*/
public void setNext(LogNode node) {
mNext = node;
}
/**
* Prints data out to the console using Android's native log mechanism.
* @param priority Log level of the data being logged. Verbose, Error, etc.
* @param tag Tag for for the log data. Can be used to organize log statements.
* @param msg The actual message to be logged. The actual message to be logged.
* @param tr If an exception was thrown, this can be sent along for the logging facilities
* to extract and print useful information.
*/
@Override
public void println(int priority, String tag, String msg, Throwable tr) {
// There actually are log methods that don't take a msg parameter. For now,
// if that's the case, just convert null to the empty string and move on.
String useMsg = msg;
if (useMsg == null) {
useMsg = "";
}
// If an exeption was provided, convert that exception to a usable string and attach
// it to the end of the msg method.
if (tr != null) {
msg += "\n" + Log.getStackTraceString(tr);
}
// This is functionally identical to Log.x(tag, useMsg);
// For instance, if priority were Log.VERBOSE, this would be the same as Log.v(tag, useMsg)
Log.println(priority, tag, useMsg);
// If this isn't the last node in the chain, move things along.
if (mNext != null) {
mNext.println(priority, tag, msg, tr);
}
}
}

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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.android.common.logger;
/**
* Simple {@link LogNode} filter, removes everything except the message.
* Useful for situations like on-screen log output where you don't want a lot of metadata displayed,
* just easy-to-read message updates as they're happening.
*/
public class MessageOnlyLogFilter implements LogNode {
LogNode mNext;
/**
* Takes the "next" LogNode as a parameter, to simplify chaining.
*
* @param next The next LogNode in the pipeline.
*/
public MessageOnlyLogFilter(LogNode next) {
mNext = next;
}
public MessageOnlyLogFilter() {
}
@Override
public void println(int priority, String tag, String msg, Throwable tr) {
if (mNext != null) {
getNext().println(Log.NONE, null, msg, null);
}
}
/**
* Returns the next LogNode in the chain.
*/
public LogNode getNext() {
return mNext;
}
/**
* Sets the LogNode data will be sent to..
*/
public void setNext(LogNode node) {
mNext = node;
}
}

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/*
* Copyright 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.android.textswitcher;
import android.app.Activity;
import android.os.Bundle;
import android.view.Gravity;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.Button;
import android.widget.TextSwitcher;
import android.widget.TextView;
import android.widget.ViewSwitcher.ViewFactory;
/**
* This sample shows the use of the {@link android.widget.TextSwitcher} View with animations. A
* {@link android.widget.TextSwitcher} is a special type of {@link android.widget.ViewSwitcher} that animates
* the current text out and new text in when
* {@link android.widget.TextSwitcher#setText(CharSequence)} is called.
*/
public class MainActivity extends Activity {
private TextSwitcher mSwitcher;
private int mCounter = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.sample_main);
// Get the TextSwitcher view from the layout
mSwitcher = (TextSwitcher) findViewById(R.id.switcher);
// BEGIN_INCLUDE(setup)
// Set the factory used to create TextViews to switch between.
mSwitcher.setFactory(mFactory);
/*
* Set the in and out animations. Using the fade_in/out animations
* provided by the framework.
*/
Animation in = AnimationUtils.loadAnimation(this,
android.R.anim.fade_in);
Animation out = AnimationUtils.loadAnimation(this,
android.R.anim.fade_out);
mSwitcher.setInAnimation(in);
mSwitcher.setOutAnimation(out);
// END_INCLUDE(setup)
/*
* Setup the 'next' button. The counter is incremented when clicked and
* the new value is displayed in the TextSwitcher. The change of text is
* automatically animated using the in/out animations set above.
*/
Button nextButton = (Button) findViewById(R.id.button);
nextButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mCounter++;
// BEGIN_INCLUDE(settext)
mSwitcher.setText(String.valueOf(mCounter));
// END_INCLUDE(settext)
}
});
// Set the initial text without an animation
mSwitcher.setCurrentText(String.valueOf(mCounter));
}
// BEGIN_INCLUDE(factory)
/**
* The {@link android.widget.ViewSwitcher.ViewFactory} used to create {@link android.widget.TextView}s that the
* {@link android.widget.TextSwitcher} will switch between.
*/
private ViewFactory mFactory = new ViewFactory() {
@Override
public View makeView() {
// Create a new TextView
TextView t = new TextView(MainActivity.this);
t.setGravity(Gravity.TOP | Gravity.CENTER_HORIZONTAL);
t.setTextAppearance(MainActivity.this, android.R.style.TextAppearance_Large);
return t;
}
};
// END_INCLUDE(factory)
}