package com.trs.jike.view;
import android.content.Context;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.widget.EditText;
import com.trs.jike.R;
/**
* Created by Administrator on 2016/11/8.
*/
public class ClearEditText extends EditText implements View.OnFocusChangeListener,
TextWatcher {
//EditText右侧的删除按钮
private Drawable mClearDrawable;
private boolean hasFoucs;
Context context;
public ClearEditText(Context context) {
this(context, null);
}
public ClearEditText(Context context, AttributeSet attrs) {
this(context, attrs, android.R.attr.editTextStyle);
}
public ClearEditText(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
this.context=context;
init();
}
private void init() {
// 获取EditText的DrawableRight,假如没有设置我们就使用默认的图片,获取图片的顺序是左上右下（0,1,2,3,）
mClearDrawable = getCompoundDrawables()[2];
if (mClearDrawable == null) {
mClearDrawable = getResources().getDrawable(
R.drawable.delete);
}
mClearDrawable.setBounds(0, 0, mClearDrawable.getIntrinsicWidth(),
mClearDrawable.getIntrinsicHeight());
// 默认设置隐藏图标
setClearIconVisible(false);
// 设置焦点改变的监听
setOnFocusChangeListener(this);
// 设置输入框里面内容发生改变的监听
addTextChangedListener(this);
}
/* @说明：isInnerWidth, isInnerHeight为ture，触摸点在删除图标之内，则视为点击了删除图标
* event.getX() 获取相对应自身左上角的X坐标
* event.getY() 获取相对应自身左上角的Y坐标
* getWidth() 获取控件的宽度
* getHeight() 获取控件的高度
* getTotalPaddingRight() 获取删除图标左边缘到控件右边缘的距离
* getPaddingRight() 获取删除图标右边缘到控件右边缘的距离
* isInnerWidth:
* getWidth() - getTotalPaddingRight() 计算删除图标左边缘到控件左边缘的距离
* getWidth() - getPaddingRight() 计算删除图标右边缘到控件左边缘的距离
* isInnerHeight:
* distance 删除图标顶部边缘到控件顶部边缘的距离
* distance + height 删除图标底部边缘到控件顶部边缘的距离
*/
@Override
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_UP) {
if (getCompoundDrawables()[2] != null) {
int x = (int)event.getX();
int y = (int)event.getY();
Rect rect = getCompoundDrawables()[2].getBounds();
int height = rect.height();
int distance = (getHeight() - height)/2;
boolean isInnerWidth = x > (getWidth() - getTotalPaddingRight()) && x < (getWidth() - getPaddingRight());
boolean isInnerHeight = y > distance && y <(distance + height);
if (isInnerWidth && isInnerHeight) {
this.setText("");
}
}
}
return super.onTouchEvent(event);
}
/**
* 当ClearEditText焦点发生变化的时候，
* 输入长度为零，隐藏删除图标，否则，显示删除图标
*/
@Override
public void onFocusChange(View v, boolean hasFocus) {
this.hasFoucs = hasFocus;
if (hasFocus) {
setClearIconVisible(getText().length() > 0);
} else {
setClearIconVisible(false);
}
}
protected void setClearIconVisible(boolean visible) {
Drawable right = visible ? mClearDrawable : null;
setCompoundDrawables(getCompoundDrawables()[0],
getCompoundDrawables()[1], right, getCompoundDrawables()[3]);
}
@Override
public void onTextChanged(CharSequence s, int start, int count, int after) {
if (hasFoucs) {
setClearIconVisible(s.length() > 0);
}
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
@Override
public void afterTextChanged(Editable s) {
}
}
package com.trs.jike.view;
import android.content.Context;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.widget.EditText;
import com.trs.jike.R;
/**
* Created by Administrator on 2016/11/8.
*/
public class ClearEditText extends EditText implements View.OnFocusChangeListener,
TextWatcher {
//EditText右侧的删除按钮
private Drawable mClearDrawable;
private boolean hasFoucs;
Context context;
public ClearEditText(Context context) {
this(context, null);
}
public ClearEditText(Context context, AttributeSet attrs) {
this(context, attrs, android.R.attr.editTextStyle);
}
public ClearEditText(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
this.context=context;
init();
}
private void init() {
// 获取EditText的DrawableRight,假如没有设置我们就使用默认的图片,获取图片的顺序是左上右下（0,1,2,3,）
mClearDrawable = getCompoundDrawables()[2];
if (mClearDrawable == null) {
mClearDrawable = getResources().getDrawable(
R.drawable.delete);
}
mClearDrawable.setBounds(0, 0, mClearDrawable.getIntrinsicWidth(),
mClearDrawable.getIntrinsicHeight());
// 默认设置隐藏图标
setClearIconVisible(false);
// 设置焦点改变的监听
setOnFocusChangeListener(this);
// 设置输入框里面内容发生改变的监听
addTextChangedListener(this);
}
/* @说明：isInnerWidth, isInnerHeight为ture，触摸点在删除图标之内，则视为点击了删除图标
* event.getX() 获取相对应自身左上角的X坐标
* event.getY() 获取相对应自身左上角的Y坐标
* getWidth() 获取控件的宽度
* getHeight() 获取控件的高度
* getTotalPaddingRight() 获取删除图标左边缘到控件右边缘的距离
* getPaddingRight() 获取删除图标右边缘到控件右边缘的距离
* isInnerWidth:
* getWidth() - getTotalPaddingRight() 计算删除图标左边缘到控件左边缘的距离
* getWidth() - getPaddingRight() 计算删除图标右边缘到控件左边缘的距离
* isInnerHeight:
* distance 删除图标顶部边缘到控件顶部边缘的距离
* distance + height 删除图标底部边缘到控件顶部边缘的距离
*/
@Override
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_UP) {
if (getCompoundDrawables()[2] != null) {
int x = (int)event.getX();
int y = (int)event.getY();
Rect rect = getCompoundDrawables()[2].getBounds();
int height = rect.height();
int distance = (getHeight() - height)/2;
boolean isInnerWidth = x > (getWidth() - getTotalPaddingRight()) && x < (getWidth() - getPaddingRight());
boolean isInnerHeight = y > distance && y <(distance + height);
if (isInnerWidth && isInnerHeight) {
this.setText("");
}
}
}
return super.onTouchEvent(event);
}
/**
* 当ClearEditText焦点发生变化的时候，
* 输入长度为零，隐藏删除图标，否则，显示删除图标
*/
@Override
public void onFocusChange(View v, boolean hasFocus) {
this.hasFoucs = hasFocus;
if (hasFocus) {
setClearIconVisible(getText().length() > 0);
} else {
setClearIconVisible(false);
}
}
protected void setClearIconVisible(boolean visible) {
Drawable right = visible ? mClearDrawable : null;
setCompoundDrawables(getCompoundDrawables()[0],
getCompoundDrawables()[1], right, getCompoundDrawables()[3]);
}
@Override
public void onTextChanged(CharSequence s, int start, int count, int after) {
if (hasFoucs) {
setClearIconVisible(s.length() > 0);
}
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
@Override
public void afterTextChanged(Editable s) {
}
}
