当用户点击通知时如何启动活动？我经常崩溃。我无法点击通知工作。下面显示了一个 onclick 方法。当按下一个名为 ButtonOne 的按钮时，它将在屏幕的顶部菜单栏中启动一个通知。我希望用户能够按下通知并让它启动名为 MainActivity 的活动。它崩溃并且不会启动页面。我放在 MainActivity 类中的通知代码可能有问题。怎么了？
ButtonOne.setOnClickListener(new View.OnClickListener() {
private int mId;
// anonymous inner class override for on click
public void onClick(View v) {
Intent myIntent = new Intent(MainActivity.this, CoverFlowExample.class);
MainActivity.this.startActivity(myIntent);
NotificationCompat.Builder mBuilder =
new NotificationCompat.Builder(MainActivity.this)
.setSmallIcon(R.drawable.ic_launcher)
.setContentTitle("My notification")
.setContentText("Hello World!");
// Creates an explicit intent for an Activity in your app
Intent resultIntent = new Intent(MainActivity.this, MainActivity.class);
// The stack builder object will contain an artificial back stack for the
// started Activity.
// This ensures that navigating backward from the Activity leads out of
// your application to the Home screen.
TaskStackBuilder stackBuilder = TaskStackBuilder.create(MainActivity.this);
// Adds the back stack for the Intent (but not the Intent itself)
stackBuilder.addParentStack(MainActivity.class);
// Adds the Intent that starts the Activity to the top of the stack
stackBuilder.addNextIntent(resultIntent);
PendingIntent resultPendingIntent =
stackBuilder.getPendingIntent(
0,
PendingIntent.FLAG_UPDATE_CURRENT
);
mBuilder.setContentIntent(resultPendingIntent);
NotificationManager mNotificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
// mId allows you to update the notification later on.
mNotificationManager.notify(mId, mBuilder.build());
}
});