自定义Dialog setLayout 设置宽度等于屏幕宽度无效

百度上大部分写着只要增加

getWindow().setLayout(WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.WRAP_CONTENT);
就可以让自定义的Dialog 宽度等于屏幕宽度


实际上设置后左右依然有空隙    查看源码后发现有这么一段代码 (注意绿色的注释)

Dialog(@NonNull Context context, @StyleRes int themeResId, boolean createContextThemeWrapper) {
    if (createContextThemeWrapper) {
        if (themeResId == 0) {
            /**
             * 如果不设置DialogTheme  那么就会使用默认的Theme  默认的Theme左右是设置了padding             **/
            final TypedValue outValue = new TypedValue();
            context.getTheme().resolveAttribute(R.attr.dialogTheme, outValue, true);
            themeResId = outValue.resourceId;
        }
        mContext = new ContextThemeWrapper(context, themeResId);
    } else {
        mContext = context;
    }

    mWindowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);

    final Window w = new PhoneWindow(mContext);
    mWindow = w;
    w.setCallback(this);
    w.setOnWindowDismissedCallback(this);
    w.setWindowManager(mWindowManager, null, null);
    w.setGravity(Gravity.CENTER);

    mListenersHandler = new ListenersHandler(this);
}

所以只要给自定义Diglog设置一个主题就可以了

public TabDialog(Context context) {
    super(context,R.style.TabDialog);
    init();
}




你可能感兴趣的:(Android)