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1. 自定義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 {
/**
* 刪除按鈕的引用
*/
private Drawable mClearDrawable;
/**
* 控件是否有焦點
*/
private boolean hasFoucs;
public ClearEditText(Context context) {
this(context, null);
}
public ClearEditText(Context context, AttributeSet attrs) {
// 這裏構造方法也很重要，不加這個很多屬性不能再XML裏面定義
this(context, attrs, android.R.attr.editTextStyle);
}
public ClearEditText(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init();
}
private void init() {
// 獲取EditText的DrawableRight,假如沒有設置我們就使用默認的圖片
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());
// 默認設置隱藏圖標
setClearIconVisible(false);
// 設置焦點改變的監聽
setOnFocusChangeListener(this);
// 設置輸入框裏面內容發生改變的監聽
addTextChangedListener(this);
}
/**
* 因爲我們不能直接給EditText設置點擊事件，所以我們用記住我們按下的位置來模擬點擊事件 當我們按下的位置 在 EditText的寬度 -
* 圖標到控件右邊的間距 - 圖標的寬度 和 EditText的寬度 - 圖標到控件右邊的間距之間我們就算點擊了圖標，豎直方向就沒有考慮
*/
@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);
}
/**
* 當ClearEditText焦點發生變化的時候，判斷裏面字符串長度設置清除圖標的顯示與隱藏
*/
@Override
public void onFocusChange(View v, boolean hasFocus) {
this.hasFoucs = hasFocus;
if (hasFocus) {
setClearIconVisible(getText().length() > 0);
} else {
setClearIconVisible(false);
}
}
/**
* 設置清除圖標的顯示與隱藏，調用setCompoundDrawables爲EditText繪製上去
*
* @param visible
*/
protected void setClearIconVisible(boolean visible) {
Drawable right = visible ? mClearDrawable : null;
setCompoundDrawables(getCompoundDrawables()[0],
getCompoundDrawables()[1], right, getCompoundDrawables()[3]);
}
/**
* 當輸入框裏面內容發生變化的時候回調的方法
*/
@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) {
}
/**
* 設置晃動動畫
*/
public void setShakeAnimation() {
// this.setAnimation(shakeAnimation(5));
this.startAnimation(shakeAnimation(5));
}
/**
* 晃動動畫
*
* @param counts
* 1秒鐘晃動多少下
* @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> // 用戶名輸入框
private ClearEditText edtUserCode = null;
// 密碼輸入框
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>//設置晃動效果
<span style="white-space:pre"> </span>edtUserCode.setShakeAnimation();
<span style="white-space:pre"> </span>edtPassWord.setShakeAnimation();