无法获得透明的DialogFragment

Question

我有一个对话片段,看起来像那样.

AlertDialog ad = builder.create();
Drawable d = new ColorDrawable(Color.BLACK);
d.setAlpha(130);
ad.getWindow().setBackgroundDrawable(d);

此代码使背景半透明.但我仍然在底部有一个白色的部分.我想摆脱白色只有半透明背景

我已经尝试了很多我在其他帖子中看到过的东西.

我不知道我必须在DialogFragment,AlertDialog和LinearLayout之间改变什么对象.

它可能不是LinearLayout,因为当我增加边距时,没有任何东西在移动.

这是我的代码:

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
//      setStyle(DialogFragment.STYLE_NORMAL, 0);
//      setStyle(STYLE_NO_FRAME, R.style.CustomDialog);
//      setStyle(STYLE_NO_FRAME, 0);
    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
    View view = getActivity().getLayoutInflater().inflate(
            R.layout.share_or_die, null);

    AlertDialog ad = builder.create();
    Drawable d = new ColorDrawable(Color.BLACK);
    d.setAlpha(130);
    ad.getWindow().setBackgroundDrawable(d);
    ad.setCanceledOnTouchOutside(true);
    ad.getWindow().requestFeature(Window.FEATURE_NO_TITLE);

    ad.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);      

    return ad;

}

我只是在用户单击后退按钮时在mainActivity中调用它:

@Override
public void onBackPressed() {
        if (isUserConnected && !hasShared) {
        shareOnExitDialog = new ShareOnExitDialog();
            shareOnExitDialog.setCancelable(true);
            shareOnExitDialog.show(getSupportFragmentManager(), "Exit");
        } else {
            finish();
        }


}

任何帮助,将不胜感激 !

Answer 1

问题出在默认对话框主题中.基于此,这个答案可以更容易地实现您的目标.

活动应如下所示:

public class MyActivity extends FragmentActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getWindow().requestFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.main);
    }

    @Override
    public void onBackPressed() {
        MyDialogFragment.newInstance("title title").show(getSupportFragmentManager(), "dialog");
    }
}

片段:

public class MyDialogFragment extends android.support.v4.app.DialogFragment {

    /**
     * Create a new instance of MyDialogFragment, providing "title"
     * as an argument.
     */
    static MyDialogFragment newInstance(String title) {
        MyDialogFragment frag = new MyDialogFragment();
        Bundle args = new Bundle();

        args.putString("title", title);
        frag.setArguments(args);
        return frag;
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        Dialog dialog = new Dialog(getActivity(),android.R.style.Theme_Translucent_NoTitleBar);
        final View view = getActivity().getLayoutInflater().inflate(R.layout.share_or_die, null);

        final Drawable d = new ColorDrawable(Color.BLACK);
        d.setAlpha(130);

        dialog.getWindow().setBackgroundDrawable(d);
        dialog.getWindow().setContentView(view);

        final WindowManager.LayoutParams params = dialog.getWindow().getAttributes();
        params.width = WindowManager.LayoutParams.WRAP_CONTENT;
        params.height = WindowManager.LayoutParams.WRAP_CONTENT;
        params.gravity = Gravity.CENTER;

        dialog.setCanceledOnTouchOutside(true);

        return dialog;
    }
}

此外,请务必执行以下操作:setContentView()在活动之前,getWindow().requestFeature(Window.FEATURE_NO_TITLE)应添加以便使用*NoTitleBar样式.

结果是(我用过LinearLayout单个TextView内部):

Answer 2

我希望它可以帮到你

@Override
public void onStart() {
    super.onStart();

    Window window = getDialog().getWindow();
    WindowManager.LayoutParams windowParams = window.getAttributes();
    windowParams.dimAmount = 0.0f; 

    window.setAttributes(windowParams);
}