我正在尝试在AppCompat v22.1中使用新的材料主题对话框与片段进行交互。根据Chris Banes的说法,要实现此目的:
只需从
设置如下:
我猜这个问题可能跟
有没有什么解决这个问题的方法?
只需从
onCreateDialog(Bundle)
返回new AppCompatDialog(getActivity(), getTheme())
即可。设置如下:
public class MyFragment extends DialogFragment
{
public MyFragment() { }
public Dialog onCreateDialog(Bundle savedInstanceState) {
return new AppCompatDialog(getActivity(), getTheme());
}
...
}
在正常情况下,它可以完美地工作;对话框的主题也是正确的。但是,当我们尝试使用 STYLE_NO_TITLE
选项来显示对话框时:
MyFragment fragment = new MyFragment();
fragment.setStyle(DialogFragment.STYLE_NO_TITLE, 0);
fragment.show(getSupportFragmentManager(), "DIALOG");
这会导致以下异常并崩溃:
05-19 12:18:38.806 15458-15458/? E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.example.test.testdialog, PID: 15458
android.util.AndroidRuntimeException: requestFeature() must be called before adding content
at com.android.internal.policy.impl.PhoneWindow.requestFeature(PhoneWindow.java:302)
at android.app.Dialog.requestWindowFeature(Dialog.java:1066)
at android.support.v4.app.DialogFragment.getLayoutInflater(DialogFragment.java:317)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:955)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1138)
at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:740)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1501)
at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:458)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
我猜这个问题可能跟
DialogFragment
调用requestWindowFeature()
而不是supportRequestWindowFeature()
有关(?)。有没有什么解决这个问题的方法?