BroadcastReceiver动态注册和静态注册哪个先执行

来源：互联网发布：阿里云直播编辑：程序博客网时间：2024/06/09 17:03

做了一个BroadcastReceiver动态注册和静态注册哪个先执行的试验，结果显示，动态注册的接收者会先执行。

第一个demo是在oncreate中动态注册；

第二个demo是通过点击按钮来动态注册（代码如下）；

第三个demo将静态注册的广播接受者的priority设置成1000

得到结果都是一样。

动态注册广播的代码如下：

package com.example.receiverprioritytest;import android.os.Bundle;import android.app.Activity;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import android.view.Menu;import android.view.View;public class MainActivity extends Activity {private BroadcastReceiver rec;private class CallRec extends BroadcastReceiver {@Overridepublic void onReceive(Context context, Intent intent) {System.out.println("我是 register 注册的");}}public void click(View view) {IntentFilter filter = new IntentFilter(Intent.ACTION_NEW_OUTGOING_CALL);registerReceiver(rec, filter);}@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);rec = new CallRec();}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {getMenuInflater().inflate(R.menu.main, menu);return true;}}

静态注册广播的代码如下：

①、创建一个广播接收者

package com.example.receiverprioritytest;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;public class BroadCastReceiver extends BroadcastReceiver {@Overridepublic void onReceive(Context context, Intent intent) {System.out.println("我是 manifest 注册的");}}

②在清单文件中配置

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.example.receiverprioritytest"    android:versionCode="1"    android:versionName="1.0" >    <uses-sdk        android:minSdkVersion="8"        android:targetSdkVersion="17" />    <application        android:allowBackup="true"        android:icon="@drawable/ic_launcher"        android:label="@string/app_name"        android:theme="@style/AppTheme" >        <activity            android:name="com.example.receiverprioritytest.MainActivity"            android:label="@string/app_name" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>        <receiver android:name="com.example.receiverprioritytest.BroadCastReceiver">            <intent-filter android:priority="900">                <action android:name="android.intent.action.NEW_OUTGOING_CALL"/>            </intent-filter>        </receiver>    </application></manifest>

0 0