自定义EditText

来源：互联网发布：nginx 默认错误页面编辑：程序博客网时间：2024/05/16 11:17
自定义EditText,实现带删除功能的输入框;
package com.xspacing.register.view;import com.xspacing.register.R;import android.content.Context;import android.graphics.drawable.Drawable;import android.support.v4.content.ContextCompat;import android.text.Editable;import android.text.TextWatcher;import android.util.AttributeSet;import android.view.MotionEvent;import android.widget.EditText;/** *  * @ClassName CustomEditText.java * @Description 自定义EditText * @author Smile * @version v1.0 * @date 2016年9月20日 下午9:09:10 */public class CustomEditText extends EditText {    private Drawable drawable;    private Context mContext;    public CustomEditText(Context context, AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);        mContext = context;        initEditText();    }    public CustomEditText(Context context, AttributeSet attrs) {        super(context, attrs);        mContext = context;        initEditText();    }    public CustomEditText(Context context) {        super(context);        mContext = context;        initEditText();    }    private void initEditText() {        // 监听输入框的字符        this.addTextChangedListener(new TextWatcher() {            @Override            public void onTextChanged(CharSequence s, int start, int before, int count) {            }            @Override            public void beforeTextChanged(CharSequence s, int start, int count, int after) {            }            @Override            public void afterTextChanged(Editable s) {                getDrawable();            }        });    }    private void getDrawable() {        //获取删除图片        drawable = ContextCompat.getDrawable(mContext, R.drawable.delete);        if (length() >= 1) {            this.setCompoundDrawablesWithIntrinsicBounds(null, null, drawable, null);        } else {            this.setCompoundDrawablesWithIntrinsicBounds(null, null, null, null);        }    }    @Override    public boolean onTouchEvent(MotionEvent event) {        this.requestFocus();// 获取焦点        if (drawable != null && event.getAction() == MotionEvent.ACTION_DOWN) {            float x = event.getX();            if (getWidth() - drawable.getMinimumWidth() <= x && x <= getWidth()) {                this.setText("");                return true;            }        }        return surpe.onTouchEvent(event);     }}
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