Android-broadcast静态动态广播

Posted 2020-09-24 zCoderJoy

广播的静态和动态类型

静态广播：

1.继承之broadcastreceiver

public class MyStaticBroadcastReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        //RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget_layout);

        Toast.makeText(context,"zcxczcxstatic",Toast.LENGTH_SHORT).show();
        Log.d("zcx","staticbroad");
        //remoteViews.setTextViewText(R.id.widget_text, intent.getStringExtra("MESSAGE"));
        //context.startActivity(intent);
        AlertDialog.Builder builder = new AlertDialog.Builder(context);
        builder.setTitle("提示")
                .setMessage("收到BroadcastSend应用程序的广播")
                .setPositiveButton("确定", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                    }
                })
                .setNegativeButton("取消", new DialogInterface.OnClickListener() {

                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                    }
                });
        AlertDialog dialog = (AlertDialog) builder.create();
        dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);
        dialog.show();
        
        //AppWidgetManager.getInstance(context).updateAppWidget(new ComponentName(
         //       context.getApplicationContext(), MyWidgetProvider.class), remoteViews);
    }

 

2.在androidManifest中定义

<receiver android:priority="1000"  android:name=".MyStaticBroadcastReceiver"
            android:permission="com.example.zcx.permission"
            android:process=":remote"
            >
            <intent-filter>
                <action android:name="android.zcx"></action>
            </intent-filter>
</receiver>>

3.client 调用

Log.d("zcx","sendStaticBroadcastButton");
                //Toast.makeText(getApplicationContext(),"zcxczcx",Toast.LENGTH_SHORT).show();
                Intent intent = new Intent();
                intent.setAction("android.zcx");
                //intent.setAction("android.appwidget.action.zcx");
                intent.addFlags(FLAG_INCLUDE_STOPPED_PACKAGES);
                //intent.putExtra("MESSAGE", editText.getText().toString());
                sendBroadcast(intent);

 

 

动态广播：

1.继承之broadcastreceiver

@Override
    public void onReceive(Context context, Intent intent) {
        //RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget_layout);
        Log.d("zcx","MyDynamicBroadcastReceiver");
        //remoteViews.setTextViewText(R.id.widget_text, intent.getStringExtra("MESSAGE"));
        Toast.makeText(context,"zcxczcxDYnamic",Toast.LENGTH_SHORT).show();
        //AppWidgetManager.getInstance(context).updateAppWidget(new ComponentName(
         //       context.getApplicationContext(), MyWidgetProvider.class), remoteViews);
        AlertDialog.Builder builder = new AlertDialog.Builder(context);
        builder.setTitle("提示")
                .setMessage("收到BroadcastSend dYNAMIC应用程序的广播")
                .setPositiveButton("确定", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                    }
                })
                .setNegativeButton("取消", new DialogInterface.OnClickListener() {

                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                    }
                });
        AlertDialog dialog = (AlertDialog) builder.create();
        dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);
        dialog.show();
    }

2.服务端代码注册启动

IntentFilter dynamic_filter = new IntentFilter();
        dynamic_filter.addAction("android.appwidget.action.zcx");
        myDynamicBroadcastReceiver = new MyDynamicBroadcastReceiver();
        registerReceiver(myDynamicBroadcastReceiver,dynamic_filter);

3.客户端调用

public void onClick(View v) {
                Intent intent = new Intent();
                //intent.setAction("android.zcx");
                intent.setAction("android.appwidget.action.zcx");
                //intent.addFlags(FLAG_INCLUDE_STOPPED_PACKAGES);
                //intent.putExtra("MESSAGE", editText.getText().toString());
                sendBroadcast(intent);
}

 

 动态广播和静态广播的区别：

（1）动态注册广播不是常驻型广播，也就是说广播跟随Activity的生命周期。注意在Activity结束前，移除广播接收器。

静态注册是常驻型，也就是说当应用程序关闭后，如果有信息广播来，程序也会被系统调用自动运行。

 

这里采用动态和静态的实现方式，服务和客户端，服务要打开，客户才可以调用服务的广播接收，动态可以理解，静态为什么？