自定义EditText的两种方法

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自定义EditText的两种方法

方法一：

来源：http://blog.csdn.net/ff20081528/article/details/17121911
public class MyEditText extends EditText {
Drawable img;
Context mcontext;

public MyEditText(Context context, AttributeSet attrs) {    super(context, attrs);    mcontext = context;    setBackgroundResource(R.drawable.et_background);    setTextColor(getResources().getColor(R.color.font_black));    setTextSize(16);    img = mcontext.getResources().getDrawable(R.drawable.item_delete_icon);    addTextChangedListener(new TextWatcher() {        @Override        public void beforeTextChanged(CharSequence s, int start, int count, int after) {        }        @Override        public void onTextChanged(CharSequence s, int start, int before, int count) {        }        @Override        public void afterTextChanged(Editable s) {            if (s.length() > 0) {                setCompoundDrawablesWithIntrinsicBounds(null, null, img, null);//设置删除图片            } else {                setCompoundDrawablesWithIntrinsicBounds(null, null, null, null);            }        }    });    try {//设置光标颜色        Field f = TextView.class.getDeclaredField("mCursorDrawableRes");        f.setAccessible(true);        f.set((TextView) this, R.drawable.color_cursor);    }catch (Exception e){    }}// 处理删除事件@Overridepublic boolean onTouchEvent(MotionEvent event) {    if (img != null && event.getAction() == MotionEvent.ACTION_UP) {        //获取点击事件产生的X,Y值        int eventX = (int) event.getRawX();        int eventY = (int) event.getRawY();        Log.e(String.valueOf(mcontext), "eventX = " + eventX + "; eventY = " + eventY);        Rect rect = new Rect();// 定义一个矩形        getGlobalVisibleRect(rect);        rect.left = rect.right - 50;        if(rect.contains(eventX, eventY))//判断点击的X，Y是否在矩形内            setText("");    }    return super.onTouchEvent(event);}public MyEditText(Context context) {    super(context);}

}

方法二：
因为方法一是根据点击事件的X、Y值来定位删除事件的产生的，在运用到自定义对话框的时候位置就有点问题，经过调整感觉还是差那么一点。所以觉得编写另外一种方法来实现。

实现代码

public class mMyEditText extends LinearLayout {
private ImageView img;
private Context mcontext;
private EditText et;
private String hinttext;

public mMyEditText(Context context, AttributeSet attrs) {    super(context, attrs);    mcontext = context;    TypedArray type = context.obtainStyledAttributes(attrs,            R.styleable.myEdittext);    hinttext = type.getString(R.styleable.myEdittext_hint);    LayoutInflater inflater=(LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);    inflater.inflate(R.layout.view_myedittext, this);    et = (EditText) findViewById(R.id.et_my);    img = (ImageView) findViewById(R.id.img_my);    et.setHint(hinttext);    DebugLog.e(hinttext);    et.addTextChangedListener(new TextWatcher() {        @Override        public void beforeTextChanged(CharSequence s, int start, int count, int after) {        }        @Override        public void onTextChanged(CharSequence s, int start, int before, int count) {        }        @Override        public void afterTextChanged(Editable s) {            if (s.length() > 0) {                img.setVisibility(VISIBLE);            } else {                img.setVisibility(GONE);            }        }    });    et.setOnClickListener(new OnClickListener() {        @Override        public void onClick(View v) {            et.setText("");            img.setVisibility(GONE);        }    });}public mMyEditText(Context context) {    super(context);}public String getText(){    return et.getText().toString().trim();}

}

布局

添加新属性

因为这种方法是通过LinearLayout 来实现的，但是真正应用的时候，LinearLayout 没有ｈｉｎｔ属性，这时候就要添加属性了
在ｖａｌｕｅｓ目录下新建一个ａｔｔｓ文件

应用

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