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1. 自定义ClearEditText
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;
import com.cn.fujielectric.fhs.opsys.android.R;
public class ClearEditText extends EditText implements OnFocusChangeListener,
TextWatcher {
/**
* 删除按钮的引用
*/
private Drawable mClearDrawable;
/**
* 控件是否有焦点
*/
private boolean hasFoucs;
public ClearEditText(Context context) {
this(context, null);
}
public ClearEditText(Context context, AttributeSet attrs) {
// 这里构造方法也很重要，不加这个很多属性不能再XML里面定义
this(context, attrs, android.R.attr.editTextStyle);
}
public ClearEditText(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
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
mClearDrawable = getCompoundDrawables()[2];
if (mClearDrawable == null) {
// throw new
// NullPointerException("You can add drawableRight attribute in XML");
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);
}
/**
* 因为我们不能直接给EditText设置点击事件，所以我们用记住我们按下的位置来模拟点击事件 当我们按下的位置 在 EditText的宽度 -
* 图标到控件右边的间距 - 图标的宽度 和 EditText的宽度 - 图标到控件右边的间距之间我们就算点击了图标，竖直方向就没有考虑
*/
@Override
public boolean onTouchEvent(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_UP) {
if (getCompoundDrawables()[2] != null) {
boolean touchable = event.getX() > (getWidth() - getTotalPaddingRight())
&& (event.getX() < ((getWidth() - getPaddingRight())));
if (touchable) {
this.setText("");
}
}
}
return super.onTouchEvent(event);
}
/**
* 当ClearEditText焦点发生变化的时候，判断里面字符串长度设置清除图标的显示与隐藏
*/
@Override
public void onFocusChange(View v, boolean hasFocus) {
this.hasFoucs = hasFocus;
if (hasFocus) {
setClearIconVisible(getText().length() > 0);
} else {
setClearIconVisible(false);
}
}
/**
* 设置清除图标的显示与隐藏，调用setCompoundDrawables为EditText绘制上去
*
* @param visible
*/
protected void setClearIconVisible(boolean visible) {
Drawable right = visible ? mClearDrawable : null;
setCompoundDrawables(getCompoundDrawables()[0],
getCompoundDrawables()[1], right, getCompoundDrawables()[3]);
}
/**
* 当输入框里面内容发生变化的时候回调的方法
*/
@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) {
}
/**
* 设置晃动动画
*/
public void setShakeAnimation() {
// this.setAnimation(shakeAnimation(5));
this.startAnimation(shakeAnimation(5));
}
/**
* 晃动动画
*
* @param counts
* 1秒钟晃动多少下
* @return
*/
public static Animation shakeAnimation(int counts) {
Animation translateAnimation = new TranslateAnimation(0, 10, 0, 0);
translateAnimation.setInterpolator(new CycleInterpolator(counts));
translateAnimation.setDuration(1000);
return translateAnimation;
}
}
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1.5"
android:gravity="bottom" >
<TextView
android:id="@+id/txv_username"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:layout_marginLeft="20dp"
android:layout_weight="1.5"
android:text="@string/user_name"
android:textSize="@dimen/BigLabelFontSize" />
<com.csdnadcode.android.weight.ClearEditText
android:id="@+id/edt_username"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:layout_marginRight="10dp"
android:layout_weight="4"
android:background="@drawable/edit_bg_login"
android:paddingLeft="5dp"
android:paddingRight="5dp"
android:singleLine="true" >
</com.csdnadcode.android.weight.ClearEditText>
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:orientation="horizontal" >
<View
android:layout_width="10dp"
android:layout_height="0.5dp"
android:background="#FFFFFF" />
<View
android:layout_width="fill_parent"
android:layout_height="0.5dp"
android:background="#D4D4D4" />
<View
android:layout_width="10dp"
android:layout_height="0.5dp"
android:background="#FFFFFF" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1.5"
android:gravity="bottom" >
<TextView
android:id="@+id/txv_password"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:layout_marginLeft="20dp"
android:layout_weight="1.5"
android:text="@string/pass_word"
android:textSize="@dimen/BigLabelFontSize" />
<com.csdnadcode.android.weight.ClearEditText
android:id="@+id/edt_password"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:layout_marginRight="10dp"
android:layout_weight="4"
android:background="@drawable/edit_bg_login"
android:inputType="textPassword"
android:paddingLeft="5dp"
android:paddingRight="5dp"
android:singleLine="true" >
</com.csdnadcode.android.weight.ClearEditText>
</LinearLayout> // 用户名输入框
private ClearEditText edtUserCode = null;
// 密码输入框
private ClearEditText edtPassWord = null;<span style="white-space:pre"> </span>edtUserCode = (ClearEditText) this.findViewById(R.id.edt_username);
edtPassWord = (ClearEditText) this.findViewById(R.id.edt_password);<span style="white-space:pre"> edtUserCode.setSelection(edtUserCode.getText().length());
<span style="white-space:pre"> </span>edtPassWord.setSelection(edtPassWord.getText().length());</span><span style="white-space:pre"> </span><span style="white-space:pre"> </span>//设置晃动效果
<span style="white-space:pre"> </span>edtUserCode.setShakeAnimation();
<span style="white-space:pre"> </span>edtPassWord.setShakeAnimation();