AndroidのActivity之后台隐藏 


 1 public class MainActivity extends Activity {
 2     /** Called when the activity is first created. */
 3     NotificationManager nm;
 4     Notification notifi;
 5     PendingIntent pi;
 6     @Override
 7     public void onCreate(Bundle savedInstanceState) {
 8         super.onCreate(savedInstanceState);
 9         nm = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
10         notifi = new Notification(R.drawable.ic_launcher,"",System.currentTimeMillis());
11         Intent intent = new Intent(this,MainActivity.class);
12         intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP|Intent.FLAG_ACTIVITY_NEW_TASK);
13         pi = PendingIntent.getActivity(this, 0, intent, 0);
14         notifi.setLatestEventInfo(this,"别当心", "哥还在", pi);
15         notifi.flags  = Notification.FLAG_INSISTENT|Notification.FLAG_ONGOING_EVENT;
16         setContentView(R.layout.main);
17         
18     }
19 
20     @Override
21     public void onBackPressed() {
22         // TODO Auto-generated method stub
23         //super.onBackPressed();
24         AlertDialog.Builder builder = new AlertDialog.Builder(this);
25         builder.setIcon(R.drawable.ic_launcher);
26         builder.setTitle("是否退出");
27         //builder.setMessage("");
28         builder.setPositiveButton("退出", new DialogInterface.OnClickListener() {
29             
30             @Override
31             public void onClick(DialogInterface dialog, int which) {
32                 // TODO Auto-generated method stub
33                 finish();
34                 android.os.Process.killProcess(android.os.Process.myPid());
35             }
36         });
37         builder.setNeutralButton("隐藏", new DialogInterface.OnClickListener() {
38             
39             @Override
40             public void onClick(DialogInterface dialog, int which) {
41                 // TODO Auto-generated method stub
42                 Intent intent = new Intent(Intent.ACTION_MAIN);
43                 intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
44                 intent.addCategory(Intent.CATEGORY_HOME);
45                 MainActivity.this.startActivity(intent);
46                 
47             }
48         });
49         builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
50             
51             @Override
52             public void onClick(DialogInterface dialog, int which) {
53                 // TODO Auto-generated method stub
54                 
55             }
56         });
57         
58         builder.create().show();
59     }
60     
61     
62     
63 
64     @Override
65     public void finish() {
66         // TODO Auto-generated method stub
67         super.finish();
68         nm.cancel(R.drawable.ic_launcher);
69     }
70 
71     @Override
72     protected void onDestroy() {
73         // TODO Auto-generated method stub
74         super.onDestroy();
75         Log.e("MainActivity", "onDestroy");
76         nm.cancelAll();
77     }
78 

79     @Override
80     protected void onStop() {
81         // TODO Auto-generated method stub
82         super.onStop();
83         nm.notify(R.drawable.ic_launcher, notifi);
84     }
85     
86     
87

 

 

 

 

 

posted @ 2012-08-18 16:38  bvin  阅读(2897)  评论(0)    收藏  举报