Android之Intent&BroadcastReceiver

一、TestAndroid

package ext.owen.test;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class TestAndroid extends Activity implements View.OnClickListener{
    String str = "ext.owen.test.NEW_BROADCAST";
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
       
        Button btn = (Button)this.findViewById(R.id.btn);
        btn.setOnClickListener(this);
    }

public void onClick(View v) {
   if(v.getId() == R.id.btn) {
    Intent intent = new Intent(str);
//    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    this.sendBroadcast(intent);
   }
}
}

二、TestBroadcastReceiver

package ext.owen.test;

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

public class TestBroadcastReceiver extends BroadcastReceiver {
String str = "ext.owen.test.NEW_BROADCAST";
public void onReceive(Context context, Intent intent) {
   String action = intent.getAction();
   System.out.println("--------->>action = " + action);
   if(action.equals(str)) {
    Intent in = new Intent(context, TestAndroid.class);
    in.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    context.startActivity(in);
   }
}
}

三、main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView
     android:layout_width="fill_parent"
     android:layout_height="wrap_content"
     android:text="@string/hello"
     />
    <Button
    android:id = "@+id/btn"
     android:layout_width="fill_parent"
     android:layout_height="wrap_content"
     android:text="Click Me"
     />
</LinearLayout>

四、AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="ext.owen.test"
      android:versionCode="1"
      android:versionName="1.0">
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".TestAndroid"
                  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 = "TestBroadcastReceiver">
        <intent-filter>
           <action android:name = "ext.owen.test.NEW_BROADCAST"/>
        </intent-filter>
        </receiver>
    </application>
    <uses-sdk android:minSdkVersion="3" />
</manifest>