是否可以創建DialogFragment並更改默認容器? 我試過DialogFragment.show(Transaction, ...)
並在那裏設置容器,但它告訴我Fragment already added
。 DialogFragment的行爲與正常的DialogFragment相似,這一點很重要。爲DialogFragment選擇容器
編輯:我覺得有一些誤解。我說它應該看起來像「一個普通的DialogFragment」。我的意思是應該看起來像一個正常的AlertDialog。
是否可以創建DialogFragment並更改默認容器? 我試過DialogFragment.show(Transaction, ...)
並在那裏設置容器,但它告訴我Fragment already added
。 DialogFragment的行爲與正常的DialogFragment相似,這一點很重要。爲DialogFragment選擇容器
編輯:我覺得有一些誤解。我說它應該看起來像「一個普通的DialogFragment」。我的意思是應該看起來像一個正常的AlertDialog。
我想因爲DialogFragment
從Fragment
延伸,你可以使用它作爲一個正常Fragment
在任何需要的地方。它仍應實施所有Fragment
生命週期方法。但是,我不確定它是否爲特殊目的而覆蓋其中的任何一個。
我這裏是從DialogFragment
public static class MyDialogFragment extends DialogFragment {
int mNum;
/**
* Create a new instance of MyDialogFragment, providing "num"
* as an argument.
*/
static MyDialogFragment newInstance(int num) {
MyDialogFragment f = new MyDialogFragment();
// Supply num input as an argument.
Bundle args = new Bundle();
args.putInt("num", num);
f.setArguments(args);
return f;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mNum = getArguments().getInt("num");
// Pick a style based on the num.
int style = DialogFragment.STYLE_NORMAL, theme = 0;
switch ((mNum-1)%6) {
case 1: style = DialogFragment.STYLE_NO_TITLE; break;
case 2: style = DialogFragment.STYLE_NO_FRAME; break;
case 3: style = DialogFragment.STYLE_NO_INPUT; break;
case 4: style = DialogFragment.STYLE_NORMAL; break;
case 5: style = DialogFragment.STYLE_NORMAL; break;
case 6: style = DialogFragment.STYLE_NO_TITLE; break;
case 7: style = DialogFragment.STYLE_NO_FRAME; break;
case 8: style = DialogFragment.STYLE_NORMAL; break;
}
switch ((mNum-1)%6) {
case 4: theme = android.R.style.Theme_Holo; break;
case 5: theme = android.R.style.Theme_Holo_Light_Dialog; break;
case 6: theme = android.R.style.Theme_Holo_Light; break;
case 7: theme = android.R.style.Theme_Holo_Light_Panel; break;
case 8: theme = android.R.style.Theme_Holo_Light; break;
}
setStyle(style, theme);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// put here any view you want
View v = inflater.inflate(R.layout.fragment_dialog, container, false);
View tv = v.findViewById(R.id.text);
((TextView)tv).setText("Dialog #" + mNum + ": using style "
+ getNameForNum(mNum));
// Watch for button clicks.
Button button = (Button)v.findViewById(R.id.show);
button.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// When button is clicked, call up to owning activity.
((FragmentDialog)getActivity()).showDialog();
}
});
return v;
}
}
void showDialog() {
mStackLevel++;
// DialogFragment.show() will take care of adding the fragment
// in a transaction. We also want to remove any currently showing
// dialog, so make our own transaction and take care of that here.
FragmentTransaction ft = getFragmentManager().beginTransaction();
// may you got error here
Fragment prev = getFragmentManager().findFragmentByTag("dialog");
if (prev != null) {
// remove fragment from stack will fix the problem
ft.remove(prev);
}
ft.addToBackStack(null);
// Create and show the dialog.
DialogFragment newFragment = MyDialogFragment.newInstance(mStackLevel);
newFragment.show(ft, "dialog");
}
,如果你想在報警按鈕使用它這裏是代碼
public static class MyAlertDialogFragment extends DialogFragment {
public static MyAlertDialogFragment newInstance(int title) {
MyAlertDialogFragment frag = new MyAlertDialogFragment();
Bundle args = new Bundle();
args.putInt("title", title);
frag.setArguments(args);
return frag;
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
int title = getArguments().getInt("title");
return new AlertDialog.Builder(getActivity())
.setIcon(R.drawable.alert_dialog_icon)
.setTitle(title)
.setPositiveButton(R.string.alert_dialog_ok,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
((FragmentAlertDialog)getActivity()).doPositiveClick();
}
}
)
.setNegativeButton(R.string.alert_dialog_cancel,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
((FragmentAlertDialog)getActivity()).doNegativeClick();
}
}
)
.create();
}
}
你可以使用dialogFragment像一個普通的片段。看看樣本中的這段代碼。 在此代碼中,它創建一個dialogFragment並將其添加到framlayout,並在按下按鈕時將其顯示爲對話框。
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:padding="4dip"
android:gravity="center_horizontal"
android:layout_width="match_parent" android:layout_height="match_parent">
<TextView
android:id="@+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0"
android:layout_gravity="center_vertical|center_horizontal"
android:gravity="top|center_horizontal"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Demonstrates the same fragment
being shown as a dialog and embedded inside of an activity." />
<Button android:id="@+id/show_dialog"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:layout_weight="0"
android:text="show">
<requestFocus />
</Button>
<View android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1" />
<TextView
android:id="@+id/inline_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0"
android:layout_gravity="center_vertical|center_horizontal"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Fragment embedded inside
of the activity:" />
<FrameLayout
android:id="@+id/embedded"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0"
android:layout_gravity="center_vertical|center_horizontal"
android:padding="6dp"
android:background="#ff303030"
android:gravity="top|center_horizontal" />
</LinearLayout>
和java代碼:
public class FragmentDialogOrActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fragment_dialog_or_activity);
if (savedInstanceState == null) {
// First-time init; create fragment to embed in activity.
FragmentTransaction ft = getFragmentManager().beginTransaction();
DialogFragment newFragment = MyDialogFragment.newInstance();
ft.add(R.id.embedded, newFragment);
ft.commit();
}
// Watch for button clicks.
Button button = (Button)findViewById(R.id.show_dialog);
button.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
showDialog();
}
});
}
void showDialog() {
// Create the fragment and show it as a dialog.
DialogFragment newFragment = MyDialogFragment.newInstance();
newFragment.show(getFragmentManager(), "dialog");
}
public static class MyDialogFragment extends DialogFragment {
static MyDialogFragment newInstance() {
return new MyDialogFragment();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.hello_world, container, false);
View tv = v.findViewById(R.id.text);
((TextView)tv).setText("This is an instance of MyDialogFragment");
return v;
}
}
}
,併爲你的錯誤,你可以使用下面的代碼:你注意到我改變了標籤名稱,以便您可以對話框區分
public static void showMyDialogFragment(FragmentManager fm){
FragmentTransaction ft = fm.beginTransaction();
Fragment prev = fm.findFragmentByTag("MyDialogFragment");
if (prev != null) {
ft.remove(prev);
}
ft.addToBackStack(null);
DialogFragment newFragment = MyDialogFragment.newInstance();
newFragment.show(ft, "MyDialogFragment");
}
片段和普通片段添加到您的佈局。
看看我的op編輯。我的意思是它應該看起來像一個alertdialog。我想在你的例子中你只有一個textView。沒有標題,沒有對話框按鈕。如果你說DialogFagment.show,你不能挑選容器。所以這是行不通的。 – Kuno 2014-11-05 13:48:26
當我使用MyDialogFragment擴展DialogFragment時,這意味着它可以是任何你喜歡的東西。你可以添加按鈕到片段佈局創建自定義標題和你可以想象的一切。這只是一個例子,你可以用你喜歡的任何東西來替換'R.layout.hello_world'。 – mmlooloo 2014-11-05 13:58:53
所以我必須爲我的標題和按鈕收集所有需要的樣式,讓它看起來像一個AlertDialog? – Kuno 2014-11-05 14:05:40
添加一些更多的細節,如代碼,異常消息。並且是「默認容器」與自定義對話框視圖有關。 – Pravin 2014-11-03 10:28:43
這是一個普遍的問題。我想要在其他任何地方都有鎖屏。所以我需要將我的DialogFragments放置在一個容器中,它位於lockscreencontainer的下面。 – Kuno 2014-11-03 10:47:05
鎖屏是小部件,當屏幕鎖定時調用它,我們使用getWindow()。addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED); – 2014-11-05 13:40:35