安卓-如何在ViewPager中从内部片段中消除DialogFragment

Question

我想知道，我在DialogFragment中有一个ViewPager，我想知道如何从ViewPager中的一个Fragment取消我的对话框Fragment？这是我迄今为止的代码：

对话框片段代码：

public class ReportDialog extends DialogFragment {
public static ReportDialog newInstance() {
ReportDialog rd = new ReportDialog();
return rd;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setStyle(STYLE_NO_TITLE, android.R.style.Theme_Black_NoTitleBar_Fullscreen);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.report_dialog, container);
ViewPager viewPager = (ViewPager) view.findViewById(R.id.pager);
List<Fragment> fragments = getFragments();
ReportAdapter reportAdapter = new ReportAdapter(getChildFragmentManager(), fragments);
viewPager.setAdapter(reportAdapter);
getDialog().getWindow().requestFeature(Window.FEATURE_NO_TITLE);
return view;
}
private List<Fragment> getFragments(){
List<Fragment> fList = new ArrayList<Fragment>();
fList.add(MainReport.newInstance());
//to add another fragment soon
return fList;
}
}

ViewPager代码：

public class CustomPager extends ViewPager {
private View mCurrentView;
public CustomPager(Context context) {
super(context);
}
public CustomPager(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
if (mCurrentView == null) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
return;
}
int height = 0;
mCurrentView.measure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
int h = mCurrentView.getMeasuredHeight();
if (h > height) height = h;
heightMeasureSpec = MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY);
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
public void measureCurrentView(View currentView) {
mCurrentView = currentView;
requestLayout();
}
public int measureFragment(View view) {
if (view == null) {
return 0;
}
view.measure(0, 0);
return view.getMeasuredHeight();
}
}

主报告代码：

public class MainReport extends Fragment {
public View reportView;
public static final MainReport newInstance() {
MainReport mr = new MainReport();
return mr;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
final View pageView = inflater.inflate(R.layout.activity_report, null);
ImageButton ib;
ib = (ImageButton) pageView.findViewById(R.id.done);
ib.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
//need to dismiss DialogFragment here
}
});
ib = (ImageButton) pageView.findViewById(R.id.export);
ib.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
}
});
ib = (ImageButton) pageView.findViewById(R.id.ptview);
ib.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
}
});
return pageView;
}
}

EDIT-显示对话框片段的代码：

//Located in main activity class
void showReportDialog() {
DialogFragment reportDialog = ReportDialog.newInstance();
reportDialog.show(getFragmentManager(), "report_dialog");
}

如何从ViewPager中的片段中删除DialogFragment？

Answer 1

在您的onClick中添加以下

Intent intent = new Intent(BROADCAST_ACTION);
LocalBroadcastManager.getInstance(context).sendBroadcast(intent);

在您的对话片段中添加以下

public static final String BROADCAST_ACTION = "BROADCAST_ACTION";
BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction() != null &&
intent.getAction().equals(BROADCAST_ACTION)) {getDialog.dismiss();
}
}
};
@Override
protected void onResume() {
super.onResume();
LocalBroadcastManager.getInstance(
MainActivity.this).registerReceiver(broadcastReceiver, new IntentFilter(BROADCAST_ACTION));
}
@Override
protected void onPause() {
super.onPause();
LocalBroadcastManager.getInstance(MainActivity.this).unregisterReceiver(broadcastReceiver);
}

Answer 2

您可能会这样做：

void showReportDialog() {
Fragment Transaction ft = getFragmentManager().beginTransaction();
ft.addToBackStack("report_dialog");
DialogFragment reportDialog = ReportDialog.newInstance();
reportDialog.show(ft, "report_dialog");
}

然后在MainReport内部：

getFragmentManager().popBackStack("report_dialog", FragmentManager.POP_BACK_STACK_INCLUSIVE);