android_50_Broadcast_自定义广播_android broadcast 自定义类型-优快云博客

本文链接：https://blog.youkuaiyun.com/pre_eminent/article/details/54291844

本文介绍了一个简单的跨应用通信示例，通过发送自定义广播从一个应用(app_1)触发另一个应用(app_2)中的事件。app_1通过按钮点击发送自定义广播，而app_2则在其清单文件中注册了该广播，并在接收到广播时显示提示。

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在app_1里, 点击按钮,发送广播

布局文件:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.sg31.sendbroadcast.MainActivity" >

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="发送自定义广播" 
        android:onClick="sendBroadcastBtnClicked"
        />
    

</RelativeLayout>

主控制器:

package com.sg31.sendbroadcast;

import android.support.v7.app.ActionBarActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;


public class MainActivity extends ActionBarActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
    
    
    
    
    
    public void sendBroadcastBtnClicked(View v){
        // 发送自定义广播
        Intent intent = new Intent();
        // 广播中的action也是自定义的
        intent.setAction("com.sg31.custombroadcast");
        sendBroadcast(intent);
    }
    
    
    
    
}

在app_2里,清单文件注册上述广播,并弹Toast

清单文件:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.sg31.receivecustombroadcast"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".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=".CustomBroadcastReceiver">
            <intent-filter >
                <action android:name="com.sg31.custombroadcast"/>
            </intent-filter>
        </receiver>
        
    </application>

</manifest>

广播接收者:

package com.sg31.receivecustombroadcast;

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

public class CustomBroadcastReceiver extends BroadcastReceiver {

	@Override
	public void onReceive(Context context, Intent intent) {
		Toast.makeText(context, "成功接收到自定义广播", 0).show();
	}


}