HorizontalScrollView组合RadioGroup点击RadioButton时自动滑动到屏幕的中央

rg_room:为RadioGroup hsv_top为：HorizontalScrollView

然后简单的计算一下HorizontalScrollView需要滑动的距离就可以了

//屏幕 Display d = getWindowManager().getDefaultDisplay(); DisplayMetrics dm = new DisplayMetrics(); d.getMetrics(dm); final int screenHalf = d.getWidth()/2;//屏幕宽度的一半 //RadioGroup rg_room.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroup group, int checkedId) { int scrollX = hsv_top.getScrollX(); RadioButton rb = (RadioButton) findViewById(checkedId); int left = rb.getLeft(); int leftScreen = left-scrollX; //HorizontalScrollView hsv_top.smoothScrollBy((leftScreen-screenHalf), 0); } });

注意：如果RadioButton是动态添加的话,请在RadioGroup.addview()之后再rg_room.setOnCheckedChangeListener