Android - 创建进度对话框
我是安卓开发新手.我想在我的应用程序中开发一个带有 progressbar
的 dialog
.当我单击搜索按钮时,dialog
应该与 progressbar
一起出现,显示在切换到另一个 activity
之前进度正在进行.请用示例代码向我推荐.
I am new to android development. I want to develop a dialog
with a progressbar
in my application. When i click the search button the dialog
should appear with the progressbar
, showing that the progress is going on before switching to another activity
. Please suggest me with sample code.
推荐答案
使用 ProgressDialog
.不过,您应该在一个新的 thread
上完成这项工作,并在完成后使用 handler
回调 activity
.这是我的做法:
Use a ProgressDialog
. You should do the work on a new thread
, though, and use a handler
to call back to the activity
when finished. Here's how I do it:
private ProgressDialog pd;
private View.OnClickListener searchClick = new View.OnClickListener() {
@Override
public void onClick(View v) {
pd = ProgressDialog.show(MyActivity.this, "Searching...", "Searching for matches", true, false);
new Thread(new Runnable() {
public void run() {
//do work
//.....
finishedHandler.sendEmptyMessage();
}
}).start();
}
}
private Handler finishedHandler = new Handler() {
@Override public void handleMessage(Message msg) {
pd.dismiss();
//start new activity
}
}
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