ProgressDialog mProgressDialog = new ProgressDialog(context);
mProgressDialog.setMessage(context.getString(mLoadingMsg));
mProgressDialog.setIndeterminate(true);
mProgressDialog.setCancelable(true);
Window window = mProgressDialog.getWindow();
WindowManager.LayoutParams lp = window.getAttributes();
lp.alpha = 0.7f;// 透明度
lp.dimAmount = 0.8f;// 黑暗度
window.setAttributes(lp);
mProgressDialog.setOnCancelListener(new OnCancelListener() {
@Override
public void onCancel(DialogInterface dialog) {
/** 取消Dialog时,关闭当前Task */
LoadingTask.this.cancel(true);
}
});