android 为EditText的drawable添加点击事件

/**
 * Created by jingzz on 2020/3/04.
 */
public class ClickIconEditText extends AppCompatEditText {

    public static final int CLICK_LEFT_ICON = 0;
    public static final int CLICK_RIGHT_ICON = 2;
    public static final int CLICK_TOP_ICON = 1;
    public static final int CLICK_BOTTOM_ICON = 3;

    public ClickIconEditText(Context context) {
        this(context,null);
    }

    public ClickIconEditText(Context context, AttributeSet attrs) {
        this(context, attrs, R.attr.editTextStyle);
    }

    public ClickIconEditText(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);

    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        if (event.getAction() != MotionEvent.ACTION_UP)
            return super.onTouchEvent(event);

        if(onIconClickListener ==null)
            return super.onTouchEvent(event);

        Drawable[] drawables = getCompoundDrawables();
        //0左边图片 1 上边图片 2右边图片 3 下边图片
        Drawable dl = drawables[0];
        Drawable dt = drawables[1];
        Drawable dr = drawables[2];
        Drawable db = drawables[3];

        int pt = getPaddingTop()+(dt==null?0:dt.getIntrinsicHeight());
        int pb = getPaddingBottom()+(db== null?0:db.getIntrinsicHeight());
        int pl = getPaddingLeft()+(dl==null?0:dl.getIntrinsicWidth());
        int pr = getPaddingRight()+(dr==null?0:dr.getIntrinsicWidth());

        float x = event.getX();
        float y = event.getY();

        int mx = (getWidth()-pl-pr)/2+pl;
        int my = (getHeight()-pt-pb)/2+pt;

        if(dl != null){
            int dlw = dl.getIntrinsicWidth();
            int dlh = dl.getIntrinsicHeight();
            Range<Integer> rlx = new Range<>(getPaddingLeft()-getCompoundDrawablePadding(),getPaddingLeft()+dlw+getCompoundDrawablePadding());
            Range<Integer> rly = new Range<>(my-dlh/2-getCompoundDrawablePadding(),my+dlh/2+dlw+getCompoundDrawablePadding());
            if(rlx.contains((int) x)&&rly.contains((int) y)){
                LogUtils.e("点击了左边图片");
                onIconClickListener.onIconClickListener(this,CLICK_LEFT_ICON);
                return true;
            }
        }
        if(dr != null){
            int drw = dr.getIntrinsicWidth();
            int drh = dr.getIntrinsicHeight();
            Range<Integer> rrx = new Range<>(getWidth()-getPaddingRight()-drw-getCompoundDrawablePadding(),getWidth()-getPaddingRight()-getCompoundDrawablePadding());
            Range<Integer> rry = new Range<>(my-drh/2-getCompoundDrawablePadding(),my+drh/2+drw+getCompoundDrawablePadding());
            if(rrx.contains((int) x)&&rry.contains((int) y)){
                LogUtils.e("点击了右边图片");
                onIconClickListener.onIconClickListener(this,CLICK_RIGHT_ICON);
                return true;
            }
        }
        if(dt != null){
            int dtw = dt.getIntrinsicWidth();
            int dth = dt.getIntrinsicHeight();
            Range<Integer> rtx = new Range<>(mx-dtw/2-getCompoundDrawablePadding(),mx+dtw/2+getCompoundDrawablePadding());
            Range<Integer> rty = new Range<>(getPaddingTop()-getCompoundDrawablePadding(),pt+getCompoundDrawablePadding());
            if(rtx.contains((int) x)&&rty.contains((int) y)){
                LogUtils.e("点击了上边图片");
                onIconClickListener.onIconClickListener(this,CLICK_TOP_ICON);
                return true;
            }
        }
        if(db != null){
            int dbw = db.getIntrinsicWidth();
            Range<Integer> rbx = new Range<>(mx-dbw/2-getCompoundDrawablePadding(),mx+dbw/2+getCompoundDrawablePadding());
            Range<Integer> rby = new Range<>(getHeight()-pb-getCompoundDrawablePadding(),getHeight()-getPaddingBottom()-getCompoundDrawablePadding());
            if(rbx.contains((int) x)&&rby.contains((int) y)){
                LogUtils.e("点击了下边图片");
                onIconClickListener.onIconClickListener(this,CLICK_BOTTOM_ICON);
                return true;
            }
        }

        return super.onTouchEvent(event);
    }

    private OnIconClickListener onIconClickListener;

    public void setOnIconClickListener(OnIconClickListener onIconClickListener) {
        this.onIconClickListener = onIconClickListener;
    }

    public interface OnIconClickListener{
        /**
         * @param view 被点击的view
         * @param iconType 点击的图标位置 0：左边 1:上边 2:右边 3:下边
         */
        void onIconClickListener(ClickIconEditText view,int iconType);
    }

}

使用方法：

<包名.ClickIconEditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@drawable/grayf5_radius16"
            android:drawableLeft="@mipmap/left_icon"
            android:drawableRight="@mipmap/right_icon"
            android:drawableTop="@mipmap/top_icon"
            android:drawableBottom="@mipmap/bottom_icon"
            android:drawablePadding="4dp"
            android:gravity="center_vertical"
            android:inputType="text"
            android:maxLength="20"
            android:maxLines="1" />

        ClickIconEditText editText = findViewById(R.id.etidText);
        editText.setOnIconClickListener(new ClickIconEditText.OnIconClickListener() {
            @Override
            public void onIconClickListener(ClickIconEditText view, int iconType) {
                switch (iconType) {
                    case ClickIconEditText.CLICK_LEFT_ICON:
                        //点击了左侧图标
                        break;
                    case ClickIconEditText.CLICK_RIGHT_ICON:
                        //点击了右侧图标
                        break;
                    case ClickIconEditText.CLICK_TOP_ICON:
                        //点击了上边图标
                        break;
                    case ClickIconEditText.CLICK_BOTTOM_ICON:
                        //点击了下边图标
                        break;
                }
            }
        });