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‎.gitignore

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*.iml
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.gradle
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/local.properties
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/.idea/workspace.xml
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/.idea/libraries
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.DS_Store
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/build
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/captures
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.externalNativeBuild
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/.idea
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‎app/.gitignore

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/build
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/libs

‎app/build.gradle

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apply plugin: 'com.android.application'
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android {
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compileSdkVersion 26
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defaultConfig {
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applicationId "com.coderqian.chapter2"
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minSdkVersion 15
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targetSdkVersion 26
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versionCode 1
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versionName "1.0"
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testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
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}
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buildTypes {
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release {
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minifyEnabled false
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proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
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}
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}
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}
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dependencies {
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implementation fileTree(dir: 'libs', include: ['*.jar'])
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implementation 'com.android.support:appcompat-v7:26.1.0'
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implementation 'com.android.support.constraint:constraint-layout:1.1.3'
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testImplementation 'junit:junit:4.12'
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androidTestImplementation 'com.android.support.test:runner:1.0.2'
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androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
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}

‎app/proguard-rules.pro

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# Add project specific ProGuard rules here.
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# You can control the set of applied configuration files using the
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# proguardFiles setting in build.gradle.
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#
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# For more details, see
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# http://developer.android.com/guide/developing/tools/proguard.html
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# If your project uses WebView with JS, uncomment the following
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# and specify the fully qualified class name to the JavaScript interface
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# class:
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#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
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# public *;
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#}
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# Uncomment this to preserve the line number information for
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# debugging stack traces.
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#-keepattributes SourceFile,LineNumberTable
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# If you keep the line number information, uncomment this to
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# hide the original source file name.
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#-renamesourcefileattribute SourceFile

‎app/src/androidTest/java/com/coderqian/chapter2/ExampleInstrumentedTest.java

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package com.coderqian.chapter2;
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import android.content.Context;
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import android.support.test.InstrumentationRegistry;
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import android.support.test.runner.AndroidJUnit4;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import static org.junit.Assert.*;
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/**
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* Instrumented test, which will execute on an Android device.
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*
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* @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
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*/
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@RunWith(AndroidJUnit4.class)
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public class ExampleInstrumentedTest {
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@Test
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public void useAppContext() throws Exception {
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// Context of the app under test.
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Context appContext = InstrumentationRegistry.getTargetContext();
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assertEquals("com.coderqian.chapter2", appContext.getPackageName());
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}
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}

‎app/src/main/AndroidManifest.xml

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<?xml version="1.0" encoding="utf-8"?>
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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
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package="com.coderqian.chapter2">
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<application
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android:allowBackup="true"
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android:icon="@mipmap/ic_launcher"
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android:label="@string/app_name"
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android:roundIcon="@mipmap/ic_launcher_round"
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android:supportsRtl="true"
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android:theme="@style/AppTheme">
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<activity android:name=".MainActivity">
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<intent-filter>
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<action android:name="android.intent.action.MAIN" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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<activity
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android:name=".LinearActivity"
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android:label="线性布局1 AdapterView">
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<intent-filter>
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<action android:name="android.intent.action.VIEW" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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<activity
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android:name=".TableActivity"
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android:label="表格布局 TextView/ImageView">
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<intent-filter>
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<action android:name="android.intent.action.VIEW" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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<activity
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android:name=".Linear2Activity"
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android:label="线性布局2 ProgressBar">
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<intent-filter>
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<action android:name="android.intent.action.VIEW" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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<activity
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android:name=".RelativeActivity"
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android:label="相对布局 ViewAnimator">
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<intent-filter>
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<action android:name="android.intent.action.VIEW" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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<activity
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android:name=".Linear3Activity"
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android:label="线性布局3 DatePicker/TimePicker">
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<intent-filter>
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<action android:name="android.intent.action.VIEW" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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</application>
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</manifest>

‎app/src/main/java/com/coderqian/chapter2/Linear2Activity.java

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package com.coderqian.chapter2;
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import android.os.Bundle;
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import android.os.Handler;
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import android.os.Message;
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import android.support.v7.app.AppCompatActivity;
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import android.widget.ProgressBar;
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/**
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* @author qianliqing
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* @since 2018-09-30 下午2:32
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* mail: [email protected]
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*/
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public class Linear2Activity extends AppCompatActivity {
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private int[] data = new int[100];
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int hasData = 0;
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int status = 0;
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ProgressBar progress, seek;
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Handler handler = new Handler() {
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public void handleMessage(Message msg) {
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if (msg.what == 0x111) {
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progress.setProgress(status);
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seek.setProgress(status);
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}
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}
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};
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_linear_2);
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progress = findViewById(R.id.progress);
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seek = findViewById(R.id.seek);
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new Thread() {
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public void run() {
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while (status < 100) {
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status = doWork();
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handler.sendEmptyMessage(0x111);
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}
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}
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}.start();
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}
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private int doWork() {
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data[hasData++] = (int) Math.random() * 100;
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try {
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Thread.sleep(100);
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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return hasData;
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}
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}

‎app/src/main/java/com/coderqian/chapter2/Linear3Activity.java

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package com.coderqian.chapter2;
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import android.content.DialogInterface;
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import android.os.Bundle;
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import android.support.v7.app.AlertDialog;
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import android.support.v7.app.AppCompatActivity;
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import android.view.View;
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import android.widget.Toast;
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import java.util.HashSet;
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import java.util.Set;
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/**
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* @author qianliqing
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* @since 2018-09-30 下午6:45
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* mail: [email protected]
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*/
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public class Linear3Activity extends AppCompatActivity {
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private String[] names = {"钱立清", "刘尚楠", "许知宇", "陈振宇"};
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_linear_3);
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}
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public void simple(View source) {
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AlertDialog.Builder builder = new AlertDialog.Builder(this)
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.setTitle("普通对话框")
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.setIcon(R.drawable.qianliqing)
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.setMessage("钱立清\nJava爬虫技术小白");
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builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
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@Override
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public void onClick(DialogInterface dialog, int i) {
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}
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})
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.create()
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.show();
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}
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public void simpleList(final View source) {
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AlertDialog.Builder builder = new AlertDialog.Builder(this)
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.setTitle("简单列表项对话框")
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.setIcon(R.drawable.qianliqing)
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.setItems(names, new DialogInterface.OnClickListener() {
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@Override
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public void onClick(DialogInterface dialog, int i) {
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Toast.makeText(source.getContext(), names[i], Toast.LENGTH_LONG).show();
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}
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});
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builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
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@Override
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public void onClick(DialogInterface dialog, int i) {
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}
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})
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.create()
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.show();
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}
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public void singleChoice(final View source) {
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AlertDialog.Builder builder = new AlertDialog.Builder(this)
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.setTitle("单选列表项对话框")
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.setIcon(R.drawable.qianliqing)
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.setSingleChoiceItems(names, 1, new DialogInterface.OnClickListener() {
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@Override
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public void onClick(DialogInterface dialog, int i) {
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Toast.makeText(source.getContext(), names[i], Toast.LENGTH_LONG).show();
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}
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});
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builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
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@Override
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public void onClick(DialogInterface dialog, int i) {
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}
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})
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.create()
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.show();
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}
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public void multiChoice(final View source) {
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final Set<String> set = new HashSet<>();
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AlertDialog.Builder builder = new AlertDialog.Builder(this)
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.setTitle("多选列表项对话框")
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.setIcon(R.drawable.qianliqing)
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.setMultiChoiceItems(names, new boolean[]{false, false, false, false}, new DialogInterface.OnMultiChoiceClickListener() {
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@Override
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public void onClick(DialogInterface dialog, int i, boolean b) {
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if (b) set.add(names[i]);
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else set.remove(names[i]);
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Toast.makeText(source.getContext(), set.toString(), Toast.LENGTH_LONG).show();
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}
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});
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builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
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@Override
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public void onClick(DialogInterface dialog, int i) {
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}
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})
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.create()
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.show();
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}
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}

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