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edittextWithDelete.java
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edittextWithDelete.java
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/*自定义EditView控件1*/
public class EditTextWithDelete extends EditText {
Context context;
Drawable deleteAllOn;//点击抬起时候的删除图标
Drawable deleteAllDown;//点击按下时候的删除图标
public EditTextWithDelete(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
this.context = context;
init();
}
public EditTextWithDelete(Context context, AttributeSet attrs) {
super(context, attrs);
this.context = context;
init();
}
public EditTextWithDelete(Context context) {
super(context);
this.context = context;
init();
}
private void init(){
deleteAllOn = context.getResources().getDrawable(R.drawable.delete);
deleteAllDown = context.getResources().getDrawable(R.drawable.delete_gray);
addTextChangedListener(new TextWatcher(){//监听用户输入
@Override
public void beforeTextChanged(CharSequence arg0, int arg1,
int arg2, int arg3) {
}
@Override
public void onTextChanged(CharSequence arg0, int arg1, int arg2,
int arg3) {
setDraw();
}
@Override
public void afterTextChanged(Editable s) {
}
});
}
private void setDraw(){//重绘
if(length() > 1){
setCompoundDrawablesWithIntrinsicBounds(null,null,deleteAllOn,null);
// setCompoundDrawablesWithIntrinsicBounds(left, top, right, bottom)表示左、上、右、下
}
else{
setCompoundDrawablesWithIntrinsicBounds(null,null,null,null);
}
}
@Override
public boolean onTouchEvent(MotionEvent event) {
int touchX = (int) event.getRawX();
int touchY = (int) event.getRawY();
int touchX1 = (int) event.getX();
int touchY1 = (int) event.getY();
/*getX()是表示view相对于自身左上角的x坐标,
而getRawX()是表示相对于屏幕左上角的x坐标值
(注意:这个屏幕左上角是手机屏幕左上角,
不管activity是否有titleBar或是否全屏幕)
*/
Rect rect = new Rect();
getGlobalVisibleRect(rect);//用Rect将控件框起来
rect.left = rect.right - 40;//将Rect的范围缩小到图片显示区域,只有点击落在改区域才会删除输入文字
if(length()>1){//当有文字输入时在进行操作
if(rect.contains(touchX, touchY)){
setCompoundDrawablesWithIntrinsicBounds(null,null,deleteAllDown,null);
}else{
setCompoundDrawablesWithIntrinsicBounds(null,null,deleteAllOn,null);
}
if(event.getAction() == MotionEvent.ACTION_UP){
if(rect.contains(touchX, touchY)){
setText("");//清除输入的字符串
}
setDraw();//重绘
}
}
return super.onTouchEvent(event);
}
@Override
protected void finalize() throws Throwable {
super.finalize();
}
}
//自定义控件2,两种都未测试,请自行测试
public class EditTextWithDel extends EditText {
private final static String TAG = "EditTextWithDel";
private Drawable imgInable;
private Drawable imgAble;
private Context mContext;
public EditTextWithDel(Context context) {
super(context);
mContext = context;
init();
}
public EditTextWithDel(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
mContext = context;
init();
}
public EditTextWithDel(Context context, AttributeSet attrs) {
super(context, attrs);
mContext = context;
init();
}
private void init() {
imgInable = mContext.getResources().getDrawable(R.drawable.delete_gray);
imgAble = mContext.getResources().getDrawable(R.drawable.delete);
addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
@Override
public void afterTextChanged(Editable s) {
setDrawable();
}
});
setDrawable();
}
//设置删除图片
private void setDrawable() {
if(length() < 1)
setCompoundDrawablesWithIntrinsicBounds(null, null, imgInable, null);
else
setCompoundDrawablesWithIntrinsicBounds(null, null, imgAble, null);
}
// 处理删除事件
@Override
public boolean onTouchEvent(MotionEvent event) {
if (imgAble != null && event.getAction() == MotionEvent.ACTION_UP) {
int eventX = (int) event.getRawX();
int eventY = (int) event.getRawY();
Log.e(TAG, "eventX = " + eventX + "; eventY = " + eventY);
Rect rect = new Rect();
getGlobalVisibleRect(rect);
rect.left = rect.right - 50;
if(rect.contains(eventX, eventY))
setText("");
}
return super.onTouchEvent(event);
}
@Override
protected void finalize() throws Throwable {
super.finalize();
}
}