我有一个对话框片段,中间有一个简单的不确定进度条,用于显示网络活动:
public class NativeLoadingDialogFragment extends DialogFragment {
public NativeLoadingDialogFragment() {
// Blank
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
Dialog dialog = new Dialog(getActivity(), android.R.style.Theme_Dialog);
ProgressBar indeterminateProgressBar = new ProgressBar(getActivity());
indeterminateProgressBar.setIndeterminate(true);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.setCancelable(false);
dialog.setCanceledOnTouchOutside(false);
dialog.setContentView(indeterminateProgressBar);
dialog.getWindow().setBackgroundDrawable(
new ColorDrawable(android.graphics.Color.TRANSPARENT));
return dialog;
}
public boolean isShowing() {
return getDialog() != null;
}
}
我在我的应用程序中使用了对话框片段没有任何问题,当我调用dialog.show(getFragmentManager, null)
时,它在很多地方显示没有问题,但是当我尝试在我的设置活动的onResume中调用它时它没有显示!
我有设置活动,启动系统设置以更改手机语言。一旦用户更改语言并恢复我的活动,我会检测语言是否已更改并进行网络呼叫:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
...
mLoading = new NativeLoadingDialogFragment();
if (savedInstanceState != null) {
if (savedInstanceState.containsKey(EXTRA_LANGUAGE)) {
String language = savedInstanceState.getString(EXTRA_LANGUAGE);
String currentLanguage = AppUtils.getDefaultLanguageCode(
SmartBankConstant.DEFAULT_LANGUAGE,
SmartBankConstant.SUPPORTED_LANGUAGES);
if (!language.equals(currentLanguage)) {
updateLanguage(Language.stringToLanguage(currentLanguage));
}
}
}
}
private void updateLanguage(Language newLanguage) {
....
getSpiceManager().execute(new SetLanguageRequest(newLanguage),
new SetLanguageRequestListener(this));
mLoading.show(getFragmentManager(), null);
getFragmentManager().executePendingTransactions();
}
代码肯定会运行,但不会出现对话框!如果网络调用失败,我有一个重试选项,再次调用updateLanguage(Language newLanguage)
方法,对话框实际显示那个时间!我做错了什么?
答案 0 :(得分:0)
尝试这种方法。它会检查对话框是否已经显示,否则会显示它。
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
...
mLoading = new NativeLoadingDialogFragment();
if (savedInstanceState != null) {
...
}
mLoading.show(getFragmentManager(), null);
}
private void updateLanguage(Language newLanguage) {
...
if (mLoading != null && !mLoading.isVisible()) {
mLoading.show(getFragmentManager(), null);
getFragmentManager().executePendingTransactions();
}
}
答案 1 :(得分:0)
我不知道为什么,但是在下一个循环中运行片段事务有助于解决这个问题。
new Handler().post(new Runnable() {
@Override public void run() {
// for some reason this must be called in the next loop
dialogFragment.show(getSupportFragmentManager(), tag);
}
});