android - Android - 如何从 ViewPager 中的内部片段中消除 DialogFragment?
问题描述
我想知道,我在 DialogFragment 中有一个 ViewPager,我想知道,如何从 ViewPager 中的 Fragment 中解除我的 DialogFragment?这是我到目前为止的代码:
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;
}
}
编辑 - 显示 DialogFragment 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 Fragment 中解除 DialogFragment?
解决方案
你可能会做这样的事情:
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);
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