LinearLayout使用java代码动态设置边框颜色，无需XML

Question

我在这个问题上做了一些研究，但我还没有发现任何类似的东西。

首先，我使用ShapeDrawable创建了一个线性布局的边框，然后我尝试在LinearLayout上设置背景色，但颜色未设置，然后我对两行ShapeDrowable进行了注释，然后在设置了线性布局的背景色之后，但边框颜色出现了问题。

这是我通过JSON获得的背景颜色和边框颜色的值。

我想通过java代码动态设置线性布局的背景颜色和边框颜色。

请指导我。

谢啦

LinearLayout linearToAdd = new LinearLayout(getActivity());
linearToAdd.setOrientation(VERTICAL);
float d = getActivity().getResources().getDisplayMetrics().density;

  linearToAdd.setBackgroundColor(Color.parseColor((String)(mPod.getBackground())));

    switch(parentType){
    case LINEAR_LAYOUT:
        LinearLayout.LayoutParams linearParams = new LinearLayout.LayoutParams((int)(mPod.getWidth()*d),(int)(mPod.getHeight()*d));
        Log.d(TAG,"LinLay, W,H,T,L: "+mPod.getWidth()+", "+mPod.getHeight()+", "+mPod.getLeft()+", "+mPod.getTop());
        linearParams.setMargins(mPod.getLeft(), mPod.getTop(), 0,0);            
        linearToAdd.setLayoutParams(linearParams);

               ShapeDrawable rectShapeDrawable1 = new ShapeDrawable();
               Paint paint1 = rectShapeDrawable1.getPaint();
        //     paint1.setColor(Color.rgb(0, 0, 0));
               paint1.setStyle(Paint.Style.STROKE);
               paint1.setStrokeWidth(3);

        //     linearToAdd.setBackgroundDrawable(rectShapeDrawable1);

               break;
    } 

Answer 1

窗口焦点上的overide更改了侦听器，如下所示

    @Override
    public void onWindowFocusChanged(boolean hasFocus) {
        super.onWindowFocusChanged(hasFocus);

        LinearLayout.LayoutParams linearParams = new LinearLayout.LayoutParams((int)(mPod.getWidth()*d),(int)(mPod.getHeight()*d));
        Log.d(TAG,"LinLay, W,H,T,L: "+mPod.getWidth()+", "+mPod.getHeight()+", "+mPod.getLeft()+", "+mPod.getTop());
        linearParams.setMargins(mPod.getLeft(), mPod.getTop(), 0,0);            
        linearToAdd.setLayoutParams(linearParams);

        Bitmap bitMap = Bitmap.createBitmap(linearParams.width, linearParams.height, Bitmap.Config.ARGB_8888);

        Canvas canvas=new Canvas(bitMap);

        Paint paint = new Paint();
        paint.setAntiAlias(true);
        paint.setColor(Color.parseColor((String)(mPod.getBackground())));

        Paint borderPaint = new Paint();
        borderPaint.setAntiAlias(true);
        borderPaint.setColor(Color.parseColor((String)(mPod.getBorder())));

        canvas.drawRect(linearToAdd.getLeft(), linearToAdd.getTop(), linearToAdd.getRight(), linearToAdd.getBottom(), borderPaint);
        canvas.drawRect(linearToAdd.getLeft()+2, linearToAdd.getTop()+2, linearToAdd.getRight()-2, linearToAdd.getBottom()-2, paint);

        Drawable linearToAdd_bg=new BitmapDrawable(bitMap);

        linearToAdd.setBackground(linearToAdd_bg);

    }

Answer 2

您可以尝试通过GradientDrawable来实现。我试过这个。希望对你有帮助。

GradientDrawable drawable = new GradientDrawable();
drawable.setShape(GradientDrawable.RECTANGLE);
drawable.setStroke(3, Color.BLACK);
drawable.setCornerRadius(8);
drawable.setColor(Color.BLUE);
linearToAdd.setBackgroundDrawable(drawable);

在XML布局中，将android:padding=“1dp”设置为linearToAdd。