android带清除按钮的输入框

话不多说，直奔主题，清除按钮的输入框，上代码

package cn.com.bmac.nfc.ui.widget;

import cn.com.bmac.nfc.R;

import android.content.Context;
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.view.View.OnFocusChangeListener;
import android.view.animation.Animation;
import android.view.animation.CycleInterpolator;
import android.view.animation.TranslateAnimation;
import android.widget.EditText;

public class ClearEditText extends EditText implements OnFocusChangeListener,
  TextWatcher {
 private Drawable mClearDrawable;

 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);
  init();
 }

 private void init() {
  mClearDrawable = getCompoundDrawables()[2];
  if (mClearDrawable == null) {
   mClearDrawable = getResources().getDrawable(
     R.drawable.edittext_close);//这里替换成自己的清除按钮就ok，其他的直接copy，完全可以用了
  }
  mClearDrawable.setBounds(0, 0, mClearDrawable.getIntrinsicWidth(),
    mClearDrawable.getIntrinsicHeight());
  setClearIconVisible(false);
  setOnFocusChangeListener(this);
  addTextChangedListener(this);
 }

 @Override
 public boolean onTouchEvent(MotionEvent event) {
  if (getCompoundDrawables()[2] != null) {
   if (event.getAction() == MotionEvent.ACTION_UP) {
    boolean touchable = event.getX() > (getWidth()
      - getPaddingRight() - mClearDrawable
       .getIntrinsicWidth())
      && (event.getX() < ((getWidth() - getPaddingRight())));
    if (touchable) {
     this.setText("");
    }
   }
  }

  return super.onTouchEvent(event);
 }

 @Override
 public void onFocusChange(View v, boolean 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) {
  setClearIconVisible(s.length() > 0);
 }

 @Override
 public void beforeTextChanged(CharSequence s, int start, int count,
   int after) {

 }

 @Override
 public void afterTextChanged(Editable s) {

 }

 public void setShakeAnimation() {
  this.setAnimation(shakeAnimation(5));
 }

 public static Animation shakeAnimation(int counts) {
  Animation translateAnimation = new TranslateAnimation(0, 10, 0, 0);
  translateAnimation.setInterpolator(new CycleInterpolator(counts));
  translateAnimation.setDuration(1000);
  return translateAnimation;
 }

}
在布局中引用

<包名.ClearEditText /

..................

>

属性和正常的输入框的属性完全一样，为什么一样呢，因为他继承的是EditText啊，哈哈哈，开个玩笑，欢迎评论，转载请注明出处