Android按钮边框动态

Question

我有一个按钮,没有任何只有背景颜色的文字.如果onClick()按钮我需要设置没有xml规格的按钮边框.我尝试使用渐变矩形作为drawable按钮的背景,这对我的布局来说不灵活.

如何为按钮设置特定颜色的边框？

这是我的代码.

    Button btnBlackColor=new Button(this);
    int mButtonWidth=100;
    btnBlackColor.setWidth(mButtonWidth);
    btnBlackColor.setHeight(mButtonWidth);
    btnBlackColor.setBackgroundColor(Color.BLACK);  

    btnBlackColor.setOnClickListener(new OnClickListener()
    {
      public void onClick(View v)
      {
        GradientDrawable btnShape = new GradientDrawable(Orientation.BOTTOM_TOP, new int[]{Color.BLUE,Color.LTGRAY});
        btnShape.setCornerRadius(0);
        btnShape.setSize(mButtonWidth, mButtonWidth);
        btnShape.setBounds(10, 10, mButtonWidth, mButtonWidth);
        ClipDrawable btnClip = new ClipDrawable(btnShape, Gravity.LEFT,ClipDrawable.HORIZONTAL);

        btnShape = new GradientDrawable(Orientation.BOTTOM_TOP, new int[]{Color.BLACK, Color.DKGRAY});
        btnShape.setCornerRadius(0); 
        btnShape.setSize(mButtonWidth, mButtonWidth);
        btnShape.setBounds(5, 5, mButtonWidth, mButtonWidth);


        LayerDrawable btnLayer= new LayerDrawable(new Drawable[]{btnShape, btnClip});

        btnBlackColor.setBackgroundDrawable(btnLayer); 
      }
    });

Answer 1

找到解决方案

    GradientDrawable drawable = new GradientDrawable();
    drawable.setShape(GradientDrawable.RECTANGLE);
    drawable.setStroke(5, Color.MAGENTA);
    drawable.setColor(Color.BLACK);
    btnBlackColor.setBackgroundDrawable(drawable);

使用这些值并设置为按钮背景drawable.现在,按钮看起来是MAGENTA颜色的边框.