android 廣播的使用

在Activity中，注冊廣播的一個Demo。

總共分3步

第一步：定義一個BroadcastReceiver廣播接收類：

1. private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver(){
2. @Override
3. public void onReceive(Context context, Intent intent) {
4. String action = intent.getAction();
5. if(action.equals(ACTION_NAME)){
6. Toast.makeText(Test.this, 處理action名字相對應的廣播, 200);
7. }
8. }
9.  
10. };

     

    第二步：注冊該廣播：

    [java] 
    1. public void registerBoradcastReceiver(){
    2. IntentFilter myIntentFilter = new IntentFilter();
    3. myIntentFilter.addAction(ACTION_NAME);
    4. //注冊廣播
    5. registerReceiver(mBroadcastReceiver, myIntentFilter);
    6. }

        

       第三步：觸發響應

        

       [java] 
       1. mBtnMsgEvent = new Button(this);
       2. mBtnMsgEvent.setText(發送廣播);
       3. mBtnMsgEvent.setOnClickListener(new OnClickListener() {
       4. @Override
       5. public void onClick(View v) {
       6. Intent mIntent = new Intent(ACTION_NAME);
       7. mIntent.putExtra(yaner, 發送廣播，相當於在這裡傳送數據);
       8.  
       9. //發送廣播
       10. sendBroadcast(mIntent);
       11. }
       12. });

       13.  

            

           -----最後附上完整代碼：

           [java] 
           1. package my.yaner;
           2.  
           3. import android.app.Activity;
           4. import android.content.BroadcastReceiver;
           5. import android.content.Context;
           6. import android.content.Intent;
           7. import android.content.IntentFilter;
           8. import android.os.Bundle;
           9. import android.view.View;
           10. import android.view.View.OnClickListener;
           11. import android.widget.Button;
           12. import android.widget.LinearLayout;
           13. import android.widget.Toast;
           14.  
           15. public class Test extends Activity{
           16. private final String ACTION_NAME = 發送廣播;
           17. private Button mBtnMsgEvent = null;
           18.  
           19. protected void onCreate(Bundle savedInstanceState){
           20. super.onCreate(savedInstanceState);
           21.  
           22. //注冊廣播
           23. registerBoradcastReceiver();
           24.  
           25. LinearLayout mLinearLayout = new LinearLayout(this);
           26. mBtnMsgEvent = new Button(this);
           27. mBtnMsgEvent.setText(發送廣播);
           28. mLinearLayout.addView(mBtnMsgEvent);
           29. setContentView(mLinearLayout);
           30.  
           31. mBtnMsgEvent.setOnClickListener(new OnClickListener() {
           32. @Override
           33. public void onClick(View v) {
           34. Intent mIntent = new Intent(ACTION_NAME);
           35. mIntent.putExtra(yaner, 發送廣播，相當於在這裡傳送數據);
           36.  
           37. //發送廣播
           38. sendBroadcast(mIntent);
           39. }
           40. });
           41. }
           42.  
           43. private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver(){
           44. @Override
           45. public void onReceive(Context context, Intent intent) {
           46. String action = intent.getAction();
           47. if(action.equals(ACTION_NAME)){
           48. Toast.makeText(Test.this, 處理action名字相對應的廣播, 200);
           49. }
           50. }
           51.  
           52. };
           53.  
           54. public void registerBoradcastReceiver(){
           55. IntentFilter myIntentFilter = new IntentFilter();
           56. myIntentFilter.addAction(ACTION_NAME);
           57. //注冊廣播
           58. registerReceiver(mBroadcastReceiver, myIntentFilter);
           59. }
           60. }