我需要在半透明背景上显示标准加载圆以上当前布局(带背景和按钮等)。我发现ProgressBar及其工作原理,但我需要在现有布局上渲染它,这就是问题所在。 要更清楚一点 - 想象登录屏幕上有一些图像和按钮,即“注册”。点击我需要显示部分可见的黑色背景和加载圈。Android loading circle
1
A
回答
1
尝试,看看这是否正常工作(使用它作为一个内部类)
private class executeHospitalNameGet extends AsyncTask<String, Void, Void> {
private ProgressDialog Dialog = new ProgressDialog(SettingsActivity.this);
private Context mContext;
public executeHospitalNameGet(Context context) {
mContext = context;
}
protected void onPreExecute() {
Dialog.setMessage("Getting Hospitals...");
Dialog.setTitle("Requesting Hospital Name");
Dialog.show();
}
protected Void doInBackground(String... urls) {
//DO WORK HERE
return null;
}
protected void onPostExecute(Void unused) {
Dialog.dismiss();
}
}
你会说它是这个
new executeHospitalNameGet(getApplicationContext()).execute();
1
使用RelativeLayout
,这将让你有重叠的View
S,看看这个链接:
http://developer.android.com/reference/android/widget/RelativeLayout.html
1
我认为你正在寻找的东西像模态对话框与加载动画...
看看这个... http://developer.android.com/guide/topics/ui/dialogs.html#ProgressDialog
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有没有一种方法来设置*显示时间*?我的意思是它很快就消失了。 UPD:没关系,效果很好 – Roman 2012-07-17 19:40:54