android Broadcast學習實例

轉自：http://www.cnblogs.com/snowdrop/articles/1906709.html

寫的比較淺顯偏實用，主要是代碼實例

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其實所謂的靜態註冊，動態註冊，是指接收廣播的時候，是靜態註冊接收還是動態註冊接收，發送的時候不分靜態，動態

以發送intent爲例，

一共分4種情況，以每次註冊兩個Broadcast爲例：

情況一，註冊2個靜態Broadcast

如果是靜態註冊的，接收的一定是某一個類繼承BroadcastReceiver

2個java文件如下：

BroadcastActivity.java

代碼

package com.broad.test1;

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

//2個靜態註冊
publicclass BroadcastActivity extends Activity {
/** Called when the activity is first created. */
private Button button01;
private Button button02;
privatestaticfinal String TAG ="BroadcastActivity";
privatestaticfinal String INTENAL_ACTION_1 ="su1.bluetooth.true";
privatestaticfinal String INTENAL_ACTION_2 ="su1.bluetooth.false";

@Override
publicvoid onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
button01 = (Button) findViewById(R.id.button01);
button02 = (Button) findViewById(R.id.button02);
button01.setOnClickListener(mybtnListener);
button02.setOnClickListener(mybtnListener);
}

private OnClickListener mybtnListener =new OnClickListener() {

@Override
publicvoid onClick(View v) {
// TODO Auto-generated method stub
if (v.getId() == (R.id.button01)) {
Intent intent =new Intent(INTENAL_ACTION_1);
// 也可以用mContext.sendBroadcast(intent),mContext.sendBroadcast可以在構造函數裏面初始化，
// 有內部類的時候必須用？？？
sendBroadcast(intent);
} elseif (v.getId() == (R.id.button02)) {
Intent intent =new Intent(INTENAL_ACTION_2);
sendBroadcast(intent);
} else {
Log.v(TAG, "not true not false");
}
}

};

}


BroadcastRecTest.java

代碼

package com.broad.test1;

import android.content.BroadcastReceiver;

import android.content.Context;
import android.content.Intent;
import android.util.Log;
publicclass BroadcastRecTest extends BroadcastReceiver {
privatestaticfinal String TAG="BroadcastActivity";
privatestaticfinal String INTENAL_ACTION_1="su1.bluetooth.true";
privatestaticfinal String INTENAL_ACTION_2="su1.bluetooth.false";
@Override
publicvoid onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
String action = intent.getAction();
if(action.equals(INTENAL_ACTION_1)){
Log.d(TAG,"surx>>>>>>>>>>>>>>>>>>>>>>>>>>>>>su1.bluetooth.true");
}elseif(action.equals(INTENAL_ACTION_2)){
Log.d(TAG,"surx>>>>>>>>>>>>>>>>>>>>>>>>>>>su1.bluetooth.false");
}else{
Log.d(TAG,"surx>>>>>>>>>>>>>>>>>>>>>>>>>>other type intent");
}

}
}

main.xml

代碼

<?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/button01"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="靜態接收廣播true"/>
<Button
android:id="@+id/button02"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="靜態接收廣播false"/>
</LinearLayout>

AndroidManifest.xml

代碼

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.broad.test1"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".BroadcastActivity"
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="BroadcastRecTest">
<intent-filter>
<action android:name="su1.bluetooth.true"/>
<action android:name="su1.bluetooth.false"/>
</intent-filter>
</receiver>

</application>
<uses-sdk android:minSdkVersion="8"/>
</manifest>

運行結果：

注意，靜態註冊的broadcast運行有點慢：

情況2，一個靜態，一個動態註冊Broadcast

BroadcastActivity.java

代碼

package com.broad.test1;

import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.widget.Button;
import android.view.View;
import android.view.View.OnClickListener;
import android.util.Log;
//1個動態，1個靜態註冊
publicclass BroadcastActivity extends Activity {
/** Called when the activity is first created. */
private Button button01;
private Button button02;
privatestaticfinal String TAG="BroadcastActivity";
privatestaticfinal String INTENAL_ACTION_1="su2.bluetooth.true";
privatestaticfinal String INTENAL_ACTION_2="su2.bluetooth.false";
@Override
publicvoid onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
button01=(Button)findViewById(R.id.button01);
button02=(Button)findViewById(R.id.button02);
button01.setOnClickListener(mybtnListener);
button02.setOnClickListener(mybtnListener);
}
private OnClickListener mybtnListener=new OnClickListener(){

@Override
publicvoid onClick(View v) {
// TODO Auto-generated method stub
if(v.getId()==(R.id.button01)){
Intent intent=new Intent(INTENAL_ACTION_1);
sendBroadcast(intent);
}elseif(v.getId()==(R.id.button02)){
Intent intent=new Intent(INTENAL_ACTION_2);
sendBroadcast(intent);
}else{
Log.v(TAG,"not true not false");
}
}

};

// 接收動態註冊廣播的BroadcastReceiver
private BroadcastReceiver bcrIntenal2 =new BroadcastReceiver() {
@Override
publicvoid onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
//如果有多個動態註冊的廣播，要用if(action.equals()){}else if(action.equals()){}來判斷是哪個
//String action = intent.getAction();
//這裏只有一個，不用判斷了。
Log.v(TAG,"surx>>>>>>>>>>>>>>>>>>>>>>>>>>>dong--su2.bluetooth.false");
}
};
//在onStart中動態註冊廣播,當然也可以在onCreate裏面註冊
@Override
protectedvoid onStart() {
// TODO Auto-generated method stub
super.onStart();
//動態註冊
IntentFilter intentFilter=new IntentFilter(INTENAL_ACTION_2);
//也可以用這種方法動態註冊多個，說明我可以”接收“這麼多的動態廣播。
/* IntentFilter intentFilter= new IntentFilter();
intentFilter.addAction("action1");
intentFilter.addAction("action2");*/
registerReceiver(bcrIntenal2,intentFilter);
}

//在onStop中取消註冊廣播,如果在onCreate裏面註冊，那麼在onDestroy裏面取消註冊。
@Override
protectedvoid onStop() {
// TODO Auto-generated method stub
super.onStop();
unregisterReceiver(bcrIntenal2);
}

}

BroadcastRecTest.java

代碼

package com.broad.test1;

import android.content.BroadcastReceiver;

import android.content.Context;
import android.content.Intent;
import android.util.Log;
publicclass BroadcastRecTest extends BroadcastReceiver {
privatestaticfinal String TAG="BroadcastActivity";
privatestaticfinal String INTENAL_ACTION_1="su2.bluetooth.true";
@Override
publicvoid onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
String action = intent.getAction();
if(action.equals(INTENAL_ACTION_1)){
Log.d(TAG,"surx>>>>>>>>>>>>>>>>>>>>>>>>>>>>>su.bluetooth.true");
}else{
Log.d(TAG,"surx>>>>>>>>>>>>>>>>>>>>>>>>>>other type intent--jingtai");
}

}
}

main.xml

代碼

AndroidManifest.xml

代碼

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.broad.test1"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".BroadcastActivity"
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="BroadcastRecTest">
<intent-filter>
<action android:name="su2.bluetooth.true"/>
</intent-filter>
</receiver>

</application>
<uses-sdk android:minSdkVersion="8"/>
</manifest>

true是靜態註冊的，在Android.xml中註冊的，false是動態註冊的，在java代碼中註冊的

運行結果：

情況三、兩個都是動態註冊的，在同一個Activity裏面既發送，又接收，（當然也可以在不同的java中，一個發送，另一個java接收，哪怕是不同的包）

動態註冊不需要一個類繼承BroadcastReceiver這個類了，直接new一個對象即可

代碼

package com.broad.test1;

import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.widget.Button;
import android.view.View;
import android.view.View.OnClickListener;
import android.util.Log;

//兩個動態註冊
publicclass BroadcastActivity extends Activity {
/** Called when the activity is first created. */
private Button button01;
private Button button02;
privatestaticfinal String TAG="BroadcastActivity";
privatestaticfinal String INTENAL_ACTION_1="su3.bluetooth.true";
privatestaticfinal String INTENAL_ACTION_2="su3.bluetooth.false";
// private static final String BLUETOOTH_PERM = android.Manifest.permission.BLUETOOTH;
@Override
publicvoid onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
button01=(Button)findViewById(R.id.button01);
button02=(Button)findViewById(R.id.button02);
button01.setOnClickListener(mybtnListener);
button02.setOnClickListener(mybtnListener);
}
private OnClickListener mybtnListener=new OnClickListener(){

@Override
publicvoid onClick(View v) {
// TODO Auto-generated method stub
if(v.getId()==(R.id.button01)){
Intent intent=new Intent(INTENAL_ACTION_1);
sendBroadcast(intent);
}elseif(v.getId()==(R.id.button02)){
Intent intent=new Intent(INTENAL_ACTION_2);
sendBroadcast(intent);
}else{
Log.v(TAG,"not true not false");
}
}

};

// 接收動態註冊廣播的BroadcastReceiver
private BroadcastReceiver bcrIntenal2 =new BroadcastReceiver() {
@Override
publicvoid onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
//如果有多個動態註冊的廣播，要用if(action.equals()){}else if(action.equals()){}來判斷是哪個
String action = intent.getAction();
if(action.equals(INTENAL_ACTION_1)){
Log.v(TAG,"surx>>>>>>>>>>>>>>>>>>>>>>>>>>>dong--su3.bluetooth.true");
}elseif(action.equals(INTENAL_ACTION_2)){
Log.v(TAG,"surx>>>>>>>>>>>>>>>>>>>>>>>>>>>dong--su3.bluetooth.false");
}

}
};
//在onStart中動態註冊廣播,當然也可以在onCreate裏面註冊
@Override
protectedvoid onStart() {
// TODO Auto-generated method stub
super.onStart();
//動態註冊兩個，
IntentFilter intentFilter=new IntentFilter();
intentFilter.addAction(INTENAL_ACTION_1);
intentFilter.addAction(INTENAL_ACTION_2);
registerReceiver(bcrIntenal2,intentFilter);
}

//在onStop中取消註冊廣播,如果在onCreate裏面註冊，那麼在onDestroy裏面取消註冊。
@Override
protectedvoid onStop() {
// TODO Auto-generated method stub
super.onStop();
unregisterReceiver(bcrIntenal2);
}

}

main.xml

代碼

<?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/button01"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="動態接收廣播true"/>
<Button
android:id="@+id/button02"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="動態接收廣播false"/>
</LinearLayout>

AndroidManifest.xml

代碼

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.broad.test1"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".BroadcastActivity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
</application>
<uses-sdk android:minSdkVersion="8"/>
</manifest>

運行結果：

情況4，sendBroadcast的時候加權限，以2個都動態註冊爲例

代碼

package com.broad.test1;

import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.widget.Button;
import android.view.View;
import android.view.View.OnClickListener;
import android.util.Log;

//兩個動態註冊,sendBroadcast的時候加權限
publicclass BroadcastActivity extends Activity {
/** Called when the activity is first created. */
private Button button01;
private Button button02;
privatestaticfinal String TAG="BroadcastActivity";
privatestaticfinal String INTENAL_ACTION_1="su4.bluetooth.true";
privatestaticfinal String INTENAL_ACTION_2="su4.bluetooth.false";
privatestaticfinal String BLUETOOTH_PERM = android.Manifest.permission.BLUETOOTH;
@Override
publicvoid onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
button01=(Button)findViewById(R.id.button01);
button02=(Button)findViewById(R.id.button02);
button01.setOnClickListener(mybtnListener);
button02.setOnClickListener(mybtnListener);
}
private OnClickListener mybtnListener=new OnClickListener(){

@Override
publicvoid onClick(View v) {
// TODO Auto-generated method stub
if(v.getId()==(R.id.button01)){
Intent intent=new Intent(INTENAL_ACTION_1);
sendBroadcast(intent,BLUETOOTH_PERM);
}elseif(v.getId()==(R.id.button02)){
Intent intent=new Intent(INTENAL_ACTION_2);
sendBroadcast(intent,BLUETOOTH_PERM);
}else{
Log.v(TAG,"not true not false");
}
}

};

// 接收動態註冊廣播的BroadcastReceiver
private BroadcastReceiver bcrIntenal2 =new BroadcastReceiver() {
@Override
publicvoid onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
//如果有多個動態註冊的廣播，要用if(action.equals()){}else if(action.equals()){}來判斷是哪個
String action = intent.getAction();
if(action.equals(INTENAL_ACTION_1)){
Log.v(TAG,"surx>>>>>>>>>>>>>>>>>>>>>>>>>>>dong--su4.bluetooth.true");
}elseif(action.equals(INTENAL_ACTION_2)){
Log.v(TAG,"surx>>>>>>>>>>>>>>>>>>>>>>>>>>>dong--su4.bluetooth.false");
}

}
};
//在onStart中動態註冊廣播,當然也可以在onCreate裏面註冊
@Override
protectedvoid onStart() {
// TODO Auto-generated method stub
super.onStart();
//動態註冊兩個，說明我可以”接收“2個這樣Action的動態廣播
IntentFilter intentFilter=new IntentFilter();
intentFilter.addAction(INTENAL_ACTION_1);
intentFilter.addAction(INTENAL_ACTION_2);
registerReceiver(bcrIntenal2,intentFilter);
}

//在onStop中取消註冊廣播,如果在onCreate裏面註冊，那麼在onDestroy裏面取消註冊。
@Override
protectedvoid onStop() {
// TODO Auto-generated method stub
super.onStop();
unregisterReceiver(bcrIntenal2);
}

}

發送的時候加了藍牙權限，

若在使用sendBroadcast()的方法是指定了接收權限，則只有接收方的包內--在AndroidManifest.xml中用<uses- permission>標籤聲明瞭擁有此權限的BroascastReceiver纔會有可能接收到發送來的Broadcast。

同樣，若在註冊BroadcastReceiver時指定了可接收的Broadcast的權限，則只有在接收方的包內的AndroidManifest.xml中用<uses-permission>標籤聲明瞭，擁有此權限的Context對象所發送的Broadcast才能被這個 BroadcastReceiver所接收。

main.xml

代碼

<?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/button01"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="動態接收廣播true"/>
<Button
android:id="@+id/button02"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="動態接收廣播false"/>
</LinearLayout>

AndroidManifest.xml

代碼

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.broad.test1"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".BroadcastActivity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
</application>
<uses-sdk android:minSdkVersion="8"/>
<uses-permission android:name="android.permission.BLUETOOTH"/>
</manifest>

注意上面加的藍牙permission權限

運行結果：

兩個Application間，發送廣播，（以靜態爲例）

發送端：

package com.sendbroadcast.test1;

import android.app.Activity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
//import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.util.Log;

public class SenderTest1Activity extends Activity {
    /** Called when the activity is first created. */
    private Button btn1;
    private static String TAG = "SenderTest1Activity";

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        btn1 = (Button) findViewById(R.id.btn1);
        btn1.setText("susuSendBroadcast");
        btn1.setOnClickListener(mylistener1);
        Log.v(TAG, "onCreate........");
    }

    OnClickListener mylistener1 = new OnClickListener() {

        public void onClick(View v) {
            // TODO Auto-generated method stub
            Log.v(TAG, "@@@@@onclicksendbroadcast");
            if (v.getId() == btn1.getId()) {
                Log.v(TAG, "onclicksendbroadcast");
                Intent myIntent = new Intent();
                myIntent.setAction("su.broadcast.send");
                sendBroadcast(myIntent);
            }

        }

    };
}

接收端：

另一個application

1、Activity

package com.broadcast.receiver.test1;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
public class BroadcastReceiverTest1Activity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
    }
}

2、BroadcastReceiver

package com.broadcast.receiver.test1;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
public class MyIntentReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context arg0, Intent intent) {
        // TODO Auto-generated method stub
         String action =intent.getAction();
         if(action.equals("su.broadcast.send")){
             Log.v("MyIntentReceiver", "#####shoudao");
            }
    }

}

3、AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.broadcast.receiver.test1"
    android:versionCode="1"
    android:versionName="1.0" >

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

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <activity
            android:name=".BroadcastReceiverTest1Activity"
            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=".MyIntentReceiver"
            android:label="wodeReceiver" >
            <intent-filter>
                <action android:name="su.broadcast.send" />
            </intent-filter>
        </receiver>
    </application>

</manifest>

運行Application1，點擊button，Application2廣播接收端會收到這個廣播，打印log信息（但不會顯示BroadcastReceiverTest1Activity的界面），還是顯示SenderTest1Activity的界面，

Log信息如下：

01-30 05:14:01.146: V/SenderTest1Activity(769): onCreate........
01-30 05:14:01.766: I/ActivityManager(90): Displayed com.sendbroadcast.test1/.SenderTest1Activity: +996ms
01-30 05:14:02.085: W/InputManagerService(90): Starting input on non-focused client com.android.internal.view.IInputMethodClient$Stub$Proxy@415548b0 (uid=10009 pid=182)
01-30 05:14:02.125: W/NetworkManagementSocketTagger(90): setKernelCountSet(10009, 0) failed with errno -2
01-30 05:14:02.735: V/SenderTest1Activity(769): @@@@@onclicksendbroadcast
01-30 05:14:02.735: V/SenderTest1Activity(769): onclicksendbroadcast
01-30 05:14:02.776: V/MyIntentReceiver(977): #####shoudao

接收端Application3，用動態方式接收。（把Application1的發送的action變成("su.broadcast.send2");）

package com.myreceive.test2;

import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;

import android.util.Log;
public class BroadcastReceiverTest2Activity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
    }
    private BroadcastReceiver br= new BroadcastReceiver(){

        @Override
        public void onReceive(Context context, Intent intent) {
            // TODO Auto-generated method stub
            Log.v("BroadcastReceiverTest2Activity","#####dongtaireceive");
        }
        
    };
    @Override
    protected void onStart() {
        // TODO Auto-generated method stub
        super.onStart();
        IntentFilter it = new IntentFilter();
        it.addAction("su.broadcast.send2");
        registerReceiver(br,it);
        Log.v("BroadcastReceiverTest2Activity","#####registerReceiver");
        
    }

    @Override
    protected void onDestroy() {
        // TODO Auto-generated method stub
        super.onStop();
        unregisterReceiver(br);
        Log.v("BroadcastReceiverTest2Activity","#####unregisterReceiver");
    }
    
}

先運行Application3，不能退出（back），否則就unregisterReceiver了，也就不能收到發送端發送的廣播了。再運行Application1，點擊button，發送廣播，log信息如下：界面還是Application1的界面UI

01-30 07:13:14.918: V/SenderTest1Activity(651): @@@@@onclicksendbroadcast
01-30 07:13:14.918: V/SenderTest1Activity(651): onclicksendbroadcast
01-30 07:13:14.937: V/BroadcastReceiverTest2Activity(591): #####dongtaireceive

對於靜態Application2接收廣播來說，back之後也能接收到發送端發過來的廣播！

注意：發送廣播並不能調起另一個Activity！一直顯示的都是發送廣播的那個Activity的UI！！

總結：

以發送intent爲例，發送廣播都用sendBroadcast(intent);

靜態註冊接收的時候，只需要

（1）得到action，如：

String action = intent.getAction();

（2）判斷action類型，做出相應的動作。

動態註冊接收的時候，需要：

（1） IntentFilter intentFilter= new IntentFilter();

（2）intentFilter.addAction（。。）;可以添加多個

（3）註冊接收，registerReceiver(BroadcastReceiver對象,intentFilter);別忘了在其他需要的地方取消註冊接收！！！

（4）得到action，如：

String action = intent.getAction();
(5)判斷action類型，做出相應的動作。

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