广播接收者案例_卸载安装

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

public class AppStateReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {

        //获取到当前广播的事件类型 
        String action = intent.getAction();
        if ("android.intent.action.PACKAGE_INSTALL".equals(action)) {
            
            System.out.println("应用被安装了");
        }else if ("android.intent.action.PACKAGE_ADDED".equals(action)) {
            System.out.println("~~~~~~应用被安装了");
            
        }else if ("android.intent.action.PACKAGE_REMOVED".equals(action)) {
            System.out.println("应用被卸载了"+intent.getData());
            
        }
        
    }

}

在清单文件里面注册一下

　　　　<receiver android:name="com.itheima.appstate.AppStateReceiver">
            <intent-filter >
                <action android:name="android.intent.action.PACKAGE_INSTALL"/>
                <action android:name="android.intent.action.PACKAGE_ADDED"/> 
                <action android:name="android.intent.action.PACKAGE_REMOVED"/> 
                <data android:scheme="package"/>
                
            </intent-filter>
        </receiver>