Question

我正在使用onTouchEvent方法来缩放textview，但是当我有两个textview并且我只想调整第一个而不是第二个时，我会遇到麻烦。我的意思是，我想分开扩展。我该怎么办？

方式

 @Override
    public boolean onTouchEvent(MotionEvent event) {
        if (event.getPointerCount() == 2) {
            int action = event.getAction();
            int pureaction = action & MotionEvent.ACTION_MASK;
            if (pureaction == MotionEvent.ACTION_POINTER_DOWN) {
                mBaseDist = getDistance(event);
                mBaseRatio = mRatio;
            } else {
                float delta = (getDistance(event) - mBaseDist) / STEP;
                float multi = (float)Math.pow(2, delta);
                mRatio = Math.min(1024.0f, Math.max(0.1f, mBaseRatio * multi));
                //Definir aquí el tamaño del texto
                textView1.setTextSize(mRatio+13);
                textView2.setTextSize(mRatio+13);
            }
        }
        return true;
    }

Answer 1

试试这个，

View.OnTouchListener onTouchListener = new View.OnTouchListener() {
@Override
 public boolean onTouch(View view, MotionEvent motionEvent) {
    if (event.getPointerCount() == 2) {
        int action = event.getAction();
        int pureaction = action & MotionEvent.ACTION_MASK;
        if (pureaction == MotionEvent.ACTION_POINTER_DOWN) {
            mBaseDist = getDistance(event);
            mBaseRatio = mRatio;
        } else {
            float delta = (getDistance(event) - mBaseDist) / STEP;
            float multi = (float)Math.pow(2, delta);
            mRatio = Math.min(1024.0f, Math.max(0.1f, mBaseRatio * multi));
           ((TextView)view).setTextSize(mRatio+13);
            //Definir aquí el tamaño del texto
            //textView1.setTextSize(mRatio+13);
            //textView2.setTextSize(mRatio+13);
        }
    }
    return true;
});
textView1.setOnTouchListener(onTouchListener );
textView2.setOnTouchListener(onTouchListener );

它将分别缩放Textview。

如何将文本视图分开以仅影响一个文本视图？

1 个答案: