[Android]在Manifest中登记广播监听器

[Android]在Manifest中注册广播监听器

在Manifest中注册广播接收器以及接受广播的类型，并通过Activity中的按钮发出广播，通过接收器接受并响应。

 

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.xmlbroadcast"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="10"
        android:targetSdkVersion="15" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/title_activity_main" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <!--  注册广播监听器   -->
        <receiver android:name="TestReceiver">
            <intent-filter>
                <!-- 注明接受广播的类型   -->
                <action android:name="android.intent.action.EDIT"/>
            </intent-filter>
        </receiver>
    </application>

</manifest>

 

TestReceiver类，用来注明接受响应后执行的操作。

package com.example.xmlbroadcast;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;

public class TestReceiver extends BroadcastReceiver{

	@Override
	public void onReceive(Context arg0, Intent arg1) {
		// TODO Auto-generated method stub
		//Toast to1=null;
		//to1.makeText(null,"fuck", Toast.LENGTH_SHORT);
		//to1.show();
		System.out.print("ReceiveMessage");
		//TextView tx1=null;
		//tx1=(TextView)findViewById(R.id.txv);
	}

}

 

通过Activity中的按钮发出一个广播

package com.example.xmlbroadcast;
import java.io.*;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends Activity {

	private TextView tx1=null;
	private Button bt1=null;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        bt1=(Button)findViewById(R.id.btn);
        bt1.setOnClickListener(new bt1listener());
        tx1=(TextView)findViewById(R.id.txv);
    }

    class bt1listener implements OnClickListener{

		public void onClick(View v) {
			// TODO Auto-generated method stub
			System.out.print("fuck");
			tx1.setText("fuck");
			Intent it1=new Intent();
			it1.setAction(Intent.ACTION_EDIT);
			MainActivity.this.sendBroadcast(it1);
		}
    	
    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }
}