notification常用于下拉式的消息推送。
Notification的构成
Nitification的实例
1.新建一个Builder,要选Notification.compat包。
2.然后用builder来设置nitification的属性。
代码:
public class MainActivity extends Activity {
public static final int NOTIFICATION_ID = 200;
int count = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
findViewById(R.id.button1).setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
count++;
Builder builder = new NotificationCompat.Builder(MainActivity.this);
builder.setSmallIcon(R.drawable.ic_launcher);
builder.setContentTitle("哇哦! 你有count条心的消息");
builder.setContentText("notification创建成功");
Notification notification = builder.build();
NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
manager.notify(NOTIFICATION_ID, notification);
}
});
}
}
NOTIFICATION_ID 这个常量值用于唯一标识notification。
每次更新可以直接更新这个notification。builder可以设置更多的属性。
效果图
时间: 2024-10-02 18:31:26