问题描述
我有一个滑块,可以拉高,然后它显示的地图。我可以移动滑块上下隐藏或显示地图。当在地图上的面前,我可以处理该地图触摸事件。每次我碰,一个AsyncTask的被触发时,它会下载一些数据,并显示该数据的面包。虽然我开始触摸事件,显示没有面包,没有,直到我关闭滑盖的任务。当滑块是封闭的,不显示在地图中不再出现吐司
I have a slider that can be pulled up and then it shows a map. I can move the slider up and down to hide or show the map. When the map is on front, I can handle touch events on that map. Everytime I touch, a AsyncTask is fired up, it downloads some data and makes a Toast that displays the data. Although I start the task on touch event no toast is displayed, not till I close the slider. When the slider is closed and the map is not displayed anymore the Toast appears.
什么想法?
以及启动任务
编辑:
public boolean onTouchEvent(MotionEvent event, MapView mapView){
if (event.getAction() == 1) {
new TestTask(this).execute();
return true;
}else{
return false;
}
}
和在onPostExecute敬酒
and in onPostExecute make a toast
Toast.makeText(app.getBaseContext(),(String)data.result,
Toast.LENGTH_SHORT).show();
在新TestTask(本),这是一个参照MapOverlay而不是MapActivity,所以这是问题。
In new TestTask(this), this is a reference to MapOverlay and not to MapActivity, so this was the problem.
推荐答案
为了在您的应用程序显示吐司,试试这个:
How to display Toast in Android?
In order to "display Toast" in your application, try this:
Toast.makeText(getApplicationContext(), (String)data.result,
Toast.LENGTH_LONG).show();
另一个例子......
other example...
Toast.makeText(getApplicationContext(), "this is my Toast message!!! =)",
Toast.LENGTH_LONG).show();
我们可以定义两个constats持续时间:
We can define two constats for duration:
INT LENGTH_LONG 显示视图或文字通知长时间 时间。
INT LENGTH_SHORT 显示视图或文字通知在短期内 时间。
int LENGTH_SHORT Show the view or text notification for a short period of time.
了解更多关于敬酒
其他选项,自定义你的面包:
other option, customizing your toast:
LayoutInflater myInflater=LayoutInflater.from(this);
View view=myInflater.inflate(R.layout.your_custom_layout,null);
Toast mytoast=new Toast(this);
mytoast.setView(view);
mytoast.setDuration(Toast.LENGTH_LONG);
mytoast.show();
这篇关于如何在Android中显示吐司?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!