android的动态注册,Android应用开发之BroadcastReceiver(广播)的静态注册和动态注册 --Android开发...
本文將帶你了解Android應用開發之BroadcastReceiver(廣播)的靜態注冊和動態注冊 --Android開發,希望本文對大家學Android有所幫助
BroadcastReceiver是安卓四大組件之一,本例通過代碼的方式演示靜態注冊和動態注冊。
1、靜態注冊
靜態注冊只需要AndroidManifest.xml中進行配置:
AndroidManifest.xml:
下面是相關的代碼:
MyBroadcastReceiver.java:
package thonlon.example.cn.ipdaildemo;import ? android.content.BroadcastReceiver;import android.content.Context;import ? android.content.Intent;/** * Created by NIUXINLONG on 2018/6/21. */public ? class MyBroadcastReceiver extends BroadcastReceiver{??? @Override??? public void onReceive(Context context, ? Intent intent) {??????? String number = ? getResultData();??????? ? setResultData(number+"123456");??? }}
MainActivity.java:
package thonlon.example.cn.ipdaildemo;import ? android.content.IntentFilter;import ? android.support.v7.app.AppCompatActivity;import android.os.Bundle;public ? class MainActivity extends AppCompatActivity {??? private MyBroadcastReceiver ? myBroadcastReceiver;??? @Override??? protected void onCreate(Bundle ? savedInstanceState) {??????? ? super.onCreate(savedInstanceState);??????? ? setContentView(R.layout.activity_main);?????? MyBroadcastReceiver? myBroadcastReceiver = new ? MyBroadcastReceiver();//在主活動中調用了廣播使廣播生效}
2、動態注冊
需要在Java代碼中進行如下設定:
MainActivity.java:
package thonlon.example.cn.ipdaildemo;import ? android.content.IntentFilter;import ? android.support.v7.app.AppCompatActivity;import android.os.Bundle;public ? class MainActivity extends AppCompatActivity {??? private MyBroadcastReceiver ? myBroadcastReceiver;??? @Override??? protected void onCreate(Bundle ? savedInstanceState) {??????? ? super.onCreate(savedInstanceState);??????? ? setContentView(R.layout.activity_main);??????? IntentFilter filter = new ? IntentFilter();??????? ? filter.addAction("android.intent.action.NEW_OUTGOING_CALL");??????? myBroadcastReceiver = new ? MyBroadcastReceiver();??????? ? registerReceiver(myBroadcastReceiver, filter);??? }??? ? @Override??? protected void ? onDestroy() {??????? super.onDestroy();??????? ? unregisterReceiver(myBroadcastReceiver);//銷毀廣播??? }}
另外,動態相互側雖然不需要在AndroidManifest.xml中配置,但是不要忘了在配置文件加上廣播類型的權限:
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