安卓开发之应用的卸载与安装(广播接收者案例)

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.lidaochen.test001">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <receiver android:name=".AppStateReceiver">
            <intent-filter>
                <action android:name="android.intent.action.PACKAGE_INSTALL"></action>
                <action android:name="android.intent.action.PACKAGE_ADDED"></action>
                <action android:name="android.intent.action.PACKAGE_REMOVED"></action>
                <!-- 想让action事件生效 还需要配置一个data -->
                <data android:scheme="package"></data>
            </intent-filter>
        </receiver>
    </application>

</manifest>

package com.lidaochen.test001;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;

public class AppStateReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        // 获取当前广播事件的类型
        String action = intent.getAction();
        if("android.intent.action.PACKAGE_INSTALL".equals(action))
        {
            System.out.println("应用安装了111");
        }
        // 最后执行的是这个
        else if("android.intent.action.PACKAGE_ADDED".equals(action))
        {
            System.out.println("应用安装了222");
        }
        else if("android.intent.action.PACKAGE_REMOVED".equals(action))
        {
            System.out.println("应用卸载了222" + intent.getData());
        }
    }
}