最近使用notification，对多个notification引发的问题总结如下(只是我碰到的):
1.多个通知间，点其中一个可能取到另一个通知的内容(通知的添加的代码相似)
2.多个通知间，点击完其中一个通知，导致另外一个通知无法点击
下面贴上自己的一段测试代码：
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public class NotificationActivity extends Activity {
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.main);
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Button button = (Button) findViewById(R.id.button1);
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EditText editText = (EditText) findViewById(R.id.editText1);
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editText.setHeight(100);
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button.setOnClickListener(new OnClickListener() {
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@Override
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public void onClick(View v) {
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addNotification(2);
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try {
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Thread.sleep(2000);
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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addNotification(1);
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}
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});
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}
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private void addNotification(int id){
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NotificationManager nm = (NotificationManager)this.getSystemService(Context.NOTIFICATION_SERVICE);
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Notification notification = new Notification(R.drawable.icon, "hello,here", System.currentTimeMillis());
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notification.flags = Notification.FLAG_AUTO_CANCEL;
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Intent intent = new Intent(this, Notification2Activity.class);
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intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
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intent.putExtra("id", id + "");
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PendingIntent contentIntent = PendingIntent.getActivity(this, id, intent, PendingIntent.FLAG_UPDATE_CURRENT);
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notification.setLatestEventInfo(this, "有新消息", id + "", contentIntent);
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nm.notify(id, notification);
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}
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}
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public class Notification2Activity extends Activity {
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.main2);
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Log.i("Notification2Activity 收到id:", getIntent().getStringExtra("id"));
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}
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}
这是我测试通过，没问题后的代码.
现在说说上述两个问题的症状在哪?
1.PendingIntent.FLAG_UPDATE_CURRENT，如果设置PendingIntent.FLAG_ONE_SHOT,PendingIntent 紧紧只能被点击一次.
PendingIntent.FLAG_UPDATE_CURRENT具体代表啥,去看源码吧.
2.
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public static PendingIntent getActivity(Context context, int requestCode,
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Intent intent, int flags) {
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String packageName = context.getPackageName();
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String resolvedType = intent != null ? intent.resolveTypeIfNeeded(
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context.getContentResolver()) : null;
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try {
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IIntentSender target =
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ActivityManagerNative.getDefault().getIntentSender(
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IActivityManager.INTENT_SENDER_ACTIVITY, packageName,
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null, null, requestCode, intent, resolvedType, flags);
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return target != null ? new PendingIntent(target) : null;
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} catch (RemoteException e) {
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}
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return null;
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}
这是获取PendingIntent的源码,
第二个参数requestCode,代表着发送者的一个标识,用来区分不同通知的接收者.
所以这地方需要设置下,不能相同,否则产生前面提到的第一个的问题