简书链接:setTransX带来的弊端以及解决办法2种
文章字数：275,阅读全文大约需要1分钟
经过修复之后处理的

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private void performMove(String s, float distanceX, float distanceY) {
    float translationX = this.getTranslationX() + distanceX;
    float translationY = this.getTranslationY() + distanceY;
    //translationX是相对自身之前移动了多少，如果向上，为负值向下为正， 同样的 向左为正，那么view的位置可能不确定，qssq说，这就要用getX getY来判断了
    if (translationX < 0) {
        translationX = 0;
    }

    //        Prt.w(TAG, " ACTION_MOVE,will settransX:" + translationX + ",will transY:" + translationY + ",beforeTranslationX:" + this.getTranslationX() + ",transY:" + this.getTranslationY() + ",distnceX:" + distanceX + ",distanceY:" + distanceY);
    this.setTranslationX(translationX);//getx 是父view的左边 gety父亲的顶部距离 getTranx 是相对于原来位置的偏移
    this.setTranslationY(translationY);
    if (BuildConfig.DEBUG) {//,currentTranslationY:-1739.7078的时候看不见了
        Prt.w(TAG, "currentTraxnX:" + translationX + ",currentTranslationY:" + translationY + ",x:" + this.getX() + ",y:" + this.getY());
    }
    ViewGroup parent = (ViewGroup) getParent();

    if (this.getX() < 0) {
        this.setX(0);
    } else if (this.getX() + this.getWidth() > parent.getWidth()) {


        float fixX = parent.getWidth() - this.getWidth();//这样写不行，因为get

        Log.w(TAG, "fixX:" + fixX + ",this.Width:" + this.getWidth() + ",parentWidth:" + parent.getWidth() + ",thjs.x" + this.getX());
        this.setX(fixX);
    }

    if (this.getY() < 0) {
        this.setY(0);
    } else if (this.getY() + this.getHeight() > parent.getHeight()) {
        this.setY(parent.getHeight() - this.getHeight());
    }

    if (onMoveListener != null) {
        onMoveListener.onTransMove(this.getTranslationX(), this.getTranslationY());
    }


}

之后还是觉得setX 更好使用，更好的确定边界越界问题。

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private void performMove(String s, float distanceX, float distanceY) {
    float willX = this.getX() + distanceX;
    float willY = this.getY() + distanceY;
    //translationX是相对自身之前移动了多少，如果向上，为负值向下为正， 同样的 向左为正，那么view的位置可能不确定，qssq说，这就要用getX getY来判断了
    if (willX < 0) {
        willX = 0;
    }
    ViewGroup parent = (ViewGroup) getParent();
    if (willX < 0) {
        this.setX(0);
    } else if (willX + this.getWidth() > parent.getWidth()) {

        float fixX = parent.getWidth() - this.getWidth();//这样写不行，因为get
        Log.w(TAG, "fixX:" + fixX + ",this.Width:" + this.getWidth() + ",parentWidth:" + parent.getWidth() + ",thjs.x" + this.getX());
        willX = fixX;
    }
    if (willY < 0) {
        willY = 0;
    } else if (willY + this.getHeight() > parent.getHeight()) {
        willY = parent.getHeight() - this.getHeight();
    }
    setX(willX);
    setY(willY);

    if (onMoveListener != null) {
        onMoveListener.onTransMove(willX,willY);
    }


}