DJEditText.java

/** * Created by xp.chen on 2016/11/25. */public class DJEditText extends AppCompatEditText {    private static final int DRAWABLE_LEFT = 0;    private static final int DRAWABLE_TOP = 1;    private static final int DRAWABLE_RIGHT = 2;    private static final int DRAWABLE_BOTTOM = 3;    private Drawable mClearDrawable;    public DJEditText(Context context) {        super(context);        init();    }    public DJEditText(Context context, AttributeSet attrs) {        super(context, attrs);        init();    }    public DJEditText(Context context, AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);        init();    }    private void init() {        mClearDrawable = getResources().getDrawable(R.drawable.app_clear_btn_bg_selector);    }    @Override    protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {        super.onTextChanged(text, start, lengthBefore, lengthAfter);        setClearIconVisible(hasFocus() && length() > 0);    }    @Override    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {        super.onFocusChanged(focused, direction, previouslyFocusedRect);        setClearIconVisible(focused && length() > 0);    }    @Override    public boolean onTouchEvent(MotionEvent event) {        switch (event.getAction()) {            case MotionEvent.ACTION_UP:                Drawable drawable = getCompoundDrawables()[DRAWABLE_RIGHT];                if (drawable != null && event.getX() <= (getWidth() - getPaddingRight()) && event.getX() >= (getWidth() - getPaddingRight() - drawable.getBounds().width())) {                    setText("");                }                break;            default:                break;        }        return super.onTouchEvent(event);    }    public void setClearIconVisible(boolean visible) {        setCompoundDrawablesWithIntrinsicBounds(getCompoundDrawables()[DRAWABLE_LEFT], getCompoundDrawables()[DRAWABLE_TOP]                ,visible ? mClearDrawable : null, getCompoundDrawables()[DRAWABLE_BOTTOM]);    }}

 

最终效果：