java - Android 对话框 wrap_content 不工作

Question

我设置了一个自定义对话框，并将布局的宽度设置为 wrap_content但它仍然占用整个屏幕宽度。我什至尝试将宽度设置为 100dp 但它仍然使用整个屏幕 为什么会发生这种情况？

I have set up the dialog like this:

public class DialogGoToLine extends Dialog
{
//The root view of the dialog
private static View rootView;

public DialogGoToLine(Context context, int themeResId){
    super(context, themeResId);
}

@Override
protected void onCreate(Bundle savedInstanceState){
    super.onCreate(savedInstanceState);

    //Allow the dialog to be canceled by tapping out of its bounds
    setCancelable(true);

    //Inflate the custom layout
    LayoutInflater layoutInflater = LayoutInflater.from(HotspotHelper.getAppContext());
    rootView = layoutInflater.inflate(R.layout.dialog_go_to_line, null);

    //Set up the layout
    //setTitle(HotspotHelper.getAppContext().getString(R.string.clientDetails));
    //setTitle("Go to line");
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    setContentView(rootView);

    final EditText editText = (EditText) rootView.findViewById(R.id.editTextGoToLine);

    Button buttonGoToLine = (Button) rootView.findViewById(R.id.buttonGoToLine);
    buttonGoToLine.setOnClickListener(new View.OnClickListener(){

            @Override
            public void onClick(View p1)
            {
                int line = Integer.valueOf(editText.getText().toString()) - 1;
                ((LinearLayoutManager)LogActivity.recyclerViewLog.getLayoutManager()).scrollToPositionWithOffset(line, (int)HotspotHelper.dpToPx(30));
                dismiss();
            }
    });
}
}

And the layout XML:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:background="@color/colorPrimary"
android:gravity="center_vertical"
android:orientation="horizontal">

<TextView
    android:id="@+id/textViewGoToLabel"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_margin="4dp"
    android:labelFor="@+id/editTextGoToLine"
    android:text="Go to line: "
    android:background="@color/accent"
    android:textColor="@color/primaryText"
    android:textSize="18sp"/>

<EditText
    android:id="@id/editTextGoToLine"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:singleLine="true"
    android:layout_margin="4dp"
    android:layout_centerVertical="true"
    android:inputType="number"
    android:gravity="center"
    android:textSize="18sp"/>

<Button
    android:id="@+id/buttonGoToLine"
    android:layout_width="wrap_content"
    android:text="Go"
    android:layout_margin="4dp"
    android:textSize="18sp"
    android:layout_height="wrap_content"/>

编辑 1如果它有所作为，这个对话框有一种风格，我在其中声明了这个可绘制对象的背景:

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
<solid android:color="@color/colorPrimary"/>
<corners
android:radius="2dp" />
</shape>

Answer 1

使用必须使用此方法 setContentView(View view, ViewGroup.LayoutParams params) 而不是 setContentView(rootView);

ViewGroup.LayoutParams params= new ViewGroup.LayoutParams(
        ViewGroup.LayoutParams.WRAP_CONTENT,
        ViewGroup.LayoutParams.WRAP_CONTENT);
//ViewGroup.LayoutParams params= new ViewGroup.LayoutParams(
//        300,
//       300);
//for coustom size
params.height = thumb_size;
params.width = thumb_size;
// set padding ,margins ,gravity as your desired

使用这个setContentView(rootView, params);