Android的按键边框动态 [英] Android button border dynamically

问题描述

我有一个按钮，没有只与背景颜色的任何文字。在的onClick按钮（）事件中，我需要设置按钮边框没有 XML 规范。我试图梯度长方形为背景绘制来的按钮，这是不灵活了我的布局。

如何设置边框与特定颜色的按钮？

下面是我的code。

 按钮btnBlackColor =新按钮（本）;
    INT mButtonWidth = 100;
    btnBlackColor.setWidth（mButtonWidth）;
    btnBlackColor.setHeight（mButtonWidth）;
    btnBlackColor.setBackgroundColor（Color.BLACK）;    btnBlackColor.setOnClickListener（新OnClickListener（）
    {
      公共无效的onClick（视图v）
      {
        GradientDrawable btnShape =新GradientDrawable（Orientation.BOTTOM_TOP，新的INT [] {Color.BLUE，Color.LTGRAY}）;
        btnShape.setCornerRadius（0）;
        btnShape.setSize（mButtonWidth，mButtonWidth）;
        btnShape.setBounds（10，10，mButtonWidth，mButtonWidth）;
        ClipDrawable btnClip =新ClipDrawable（btnShape，Gravity.LEFT，ClipDrawable.HORIZONTAL）;        btnShape =新GradientDrawable（Orientation.BOTTOM_TOP，新的INT [] {Color.BLACK，Color.DKGRAY}）;
        btnShape.setCornerRadius（0）;
        btnShape.setSize（mButtonWidth，mButtonWidth）;
        btnShape.setBounds（5,5，mButtonWidth，mButtonWidth）;
        LayerDrawable btnLayer =新LayerDrawable（新绘制对象[] {btnShape，btnClip}）;        btnBlackColor.setBackgroundDrawable（btnLayer）;
      }
    }）;
 

解决方案

找到解决方案。

  GradientDrawable绘=新GradientDrawable（）;
    drawable.setShape（GradientDrawable.RECT​​ANGLE）;
    drawable.setStroke（5，Color.MAGENTA）;
    drawable.setColor（Color.BLACK）;
    btnBlackColor.setBackgroundDrawable（绘制）;
 

使用这些值并设置按钮的背景绘制。现在，按钮的外观与边境洋红色。

I am having a button, without any text only with background color. In onClick() event of the button I need to set the button border without the xml specification. I tried gradient rectangle shape as background drawable to the button which is not flexible for my layout.

How can I set border with specific color to the button?

Here is my code.

    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); 
      }
    });

解决方案

Found solution.

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

Use these values and set to button background drawable. Now, the button looks with border in MAGENTA color.

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