带有删除按钮，自动补全邮箱后缀的自定义EditText

来源：互联网发布：淘宝虚拟试衣间怎么找编辑：程序博客网时间：2024/05/01 19:23

package com.example.autocompletetextview;

import android.content.Context;
import android.graphics.drawable.Drawable;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.util.Log;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.CycleInterpolator;
import android.view.animation.TranslateAnimation;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
/**
* 带删除按钮的且可以自动补全邮箱后缀的自定义EditText
*/
public class EmailAutoCompleteTextView extends AutoCompleteTextView implements TextWatcher {
private static final String TAG = “EmailAutoCompleteTextView”;
public boolean hasFoucs;
private Drawable mClearDrawable;
private String[] emailSufixs = new String[] { “@163.com”,”@126.com”,”@sina.com”,”@qq.com”,”@sogou.com”,”@sohu.com”,
“@yahoo.com.cn”,”@56.com”};

public EmailAutoCompleteTextView(Context context) {    super(context);    init(context);}public EmailAutoCompleteTextView(Context context, AttributeSet attrs) {    this(context, attrs,android.R.attr.editTextStyle);}public EmailAutoCompleteTextView(Context context, AttributeSet attrs,        int defStyle) {    super(context, attrs, defStyle);    init(context);}public void setAdapterString(String[] es) {    if(es != null && es.length > 0)        this.emailSufixs = es;}private void init(final Context context) {    // 获取EditText的DrawableRight，如果没有，则使用默认图片。    mClearDrawable = getCompoundDrawables()[2];    if (mClearDrawable == null) {        mClearDrawable = getResources().getDrawable(                R.drawable.delete_selector);    }    mClearDrawable.setBounds(0, 0, mClearDrawable.getIntrinsicWidth(),            mClearDrawable.getIntrinsicHeight());    setClearIcoVisible(false);    addTextChangedListener(this);    // adapter中使用默认的emailSufixs中的数据，可以通过setAdapterString来更改    this.setAdapter(new EmailAutoCompleteAdapter(context,            R.layout.auto_complete_item, emailSufixs));    // 使得在输入1个字符之后便开启自动完成    this.setThreshold(1);    // 为输入框设置焦点改变监听，如果输入框有焦点，我们判断输入框的值是否为空，为空就隐藏清除图标，否则就显示    this.setOnFocusChangeListener(new OnFocusChangeListener() {        @Override        public void onFocusChange(View v, boolean hasFocus) {            EmailAutoCompleteTextView.this.hasFoucs = hasFocus;            if (hasFocus) {                setClearIcoVisible(getText().length() > 0);                String text = EmailAutoCompleteTextView.this.getText()                        .toString();                // 当该文本域重新获得焦点后，重启自动完成                if (!"".equals(text))                    performFiltering(text, 0);            } else {                setClearIcoVisible(false);                // 当文本域丢失焦点后，检查输入email地址的格式                EmailAutoCompleteTextView ev = (EmailAutoCompleteTextView) v;                String text = ev.getText().toString();                // 正则判断邮箱格式是否正确                if (text != null                        && text.matches("^[a-zA-Z0-9_]+@[a-zA-Z0-9]+\\.[a-zA-Z0-9]+$")) {                    Toast to = new Toast(context);                    ImageView i = new ImageView(context);                    i.setBackgroundResource(R.drawable.ico_refund_success);                    to.setView(i);                    to.show();                } else {                    Toast toast = Toast.makeText(context, "邮件地址格式不正确",                            Toast.LENGTH_SHORT);                    toast.setGravity(Gravity.TOP, 0, 50);                    toast.show();                }            }        }    });}@Overrideprotected void replaceText(CharSequence text) {    //当我们在下拉框中选择一项时，android会默认使用AutoCompleteTextView中Adapter里的文本来填充文本域    //因为这里Adapter中只是存了常用email的后缀    //因此要重新replace逻辑，将用户输入的部分与后缀合并    Log.i(TAG + " replaceText", text.toString());    String t = this.getText().toString();    int index = t.indexOf("@");    if(index != -1)        t = t.substring(0, index);    super.replaceText(t + text);}@Overrideprotected void performFiltering(CharSequence text, int keyCode) {    //该方法会在用户输入文本之后调用，将已输入的文本与adapter中的数据对比，若它匹配    //adapter中数据的前半部分，那么adapter中的这条数据将会在下拉框中出现    Log.i(TAG + " performFiltering", text.toString() + "   " + keyCode);    String t = text.toString();    //因为用户输入邮箱时，都是以字母，数字开始，而我们的adapter中只会提供以类似于"@163.com"    //的邮箱后缀，因此在调用super.performFiltering时，传入的一定是以"@"开头的字符串    int index = t.indexOf("@");    if(index == -1) {        if(t.matches("^[a-zA-Z0-9_]+$")) {            super.performFiltering("@", keyCode);        }        else            this.dismissDropDown();//当用户中途输入非法字符时，关闭下拉提示框    } else {        super.performFiltering(t.substring(index), keyCode);    }}private class EmailAutoCompleteAdapter extends ArrayAdapter<String> {    public EmailAutoCompleteAdapter(Context context, int textViewResourceId, String[] email_s) {        super(context, textViewResourceId, email_s);    }    @Override    public View getView(int position, View convertView, ViewGroup parent) {        Log.i(TAG, "in GetView");        View v = convertView;        if (v == null)            v = LayoutInflater.from(getContext()).inflate(                    R.layout.auto_complete_item, null);        TextView tv = (TextView) v.findViewById(R.id.tv);        String t = EmailAutoCompleteTextView.this.getText().toString();        int index = t.indexOf("@");        if(index != -1)            t = t.substring(0, index);        //将用户输入的文本与adapter中的email后缀拼接后，在下拉框中显示        tv.setText(t + getItem(position));        Log.i(TAG, tv.getText().toString());        return v;    }}/** * 设置图标的显示和隐藏，调用setCompoundDrawables为EditText绘制上去。 *  * @param visible */private void setClearIcoVisible(boolean visible) {    Drawable rightDrawable = visible ? mClearDrawable : null;    setCompoundDrawables(getCompoundDrawables()[0], getCompoundDrawables()[1], rightDrawable, getCompoundDrawables()[3]);}@Overridepublic void beforeTextChanged(CharSequence s, int start, int count, int after) {}@Overridepublic void afterTextChanged(Editable s) {}/** * 当手指抬起的位置在clean的图标的区域 我们将此视为进行清除操作 getWidth():得到控件的宽度 * event.getX():抬起时的坐标(改坐标是相对于控件本身而言的) * getTotalPaddingRight():clean的图标左边缘至控件右边缘的距离 * getPaddingRight():clean的图标右边缘至控件右边缘的距离 于是: getWidth() - * getTotalPaddingRight()表示: 控件左边到clean的图标左边缘的区域 getWidth() - * getPaddingRight()表示: 控件左边到clean的图标右边缘的区域 所以这两者之间的区域刚好是clean的图标的区域 */@Overridepublic boolean onTouchEvent(MotionEvent event) {    if (getCompoundDrawables()[2] != null) {        boolean touchable = (event.getX() > (getWidth() - getTotalPaddingRight())) && (event.getX() < (getWidth() - getPaddingRight()));        if (touchable) {            this.setText("");        }    }    return super.onTouchEvent(event);}/** * 文本框中内容发生变化时判断内容长度是否为空 *  */@Overridepublic void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {    if (hasFoucs) {        setClearIcoVisible(length() > 0);    }    // TODO 自动生成的方法存根    super.onTextChanged(text, start, lengthBefore, lengthAfter);}/** * 设置晃动动画 */public void setShakeAnimation() {    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;}

}
源码下载地址: http://download.csdn.net/detail/qq_20489601/9509923

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