Android 带删除按钮的EdiText

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自定义EdiText带删除效果
效果图：
这里写图片描述
自定义EdtiText

package com.example.liushuaitao.a01edtitextwithdel.MyEditTextWithDel;import android.content.Context;import android.graphics.Rect;import android.graphics.drawable.Drawable;import android.text.Editable;import android.text.TextWatcher;import android.util.AttributeSet;import android.util.Log;import android.view.MotionEvent;import android.widget.EditText;import com.example.liushuaitao.a01edtitextwithdel.R;/** * Created by liushuaitao on 2016/7/13. */public class EditTextWithDel extends EditText {    private String TAG = "Tao";    private Context context;    private Drawable imgInable;    private Drawable imgAble;    /**     * @param context     */    public EditTextWithDel(Context context) {        super(context);        this.context = context;        init();    }    /**     * @param context     * @param attrs     */    public EditTextWithDel(Context context, AttributeSet attrs) {        super(context, attrs);        this.context = context;        init();    }    /**     * @param context     * @param attrs     * @param defStyleAttr     */    public EditTextWithDel(Context context, AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);        this.context = context;        init();    }    /**     *     */    public void init() {        imgInable = context.getResources().getDrawable(R.drawable.delete_gray);        imgAble = context.getResources().getDrawable(R.drawable.delete);        this.addTextChangedListener(new TextWatcher() {            /**             *             * @param s             * @param start             * @param count             * @param after             */            @Override            public void beforeTextChanged(CharSequence s, int start, int count, int after) {            }            /**             *             * @param s             * @param start             * @param before             * @param count             */            @Override            public void onTextChanged(CharSequence s, int start, int before, int count) {            }            /**             *             * @param s             */            @Override            public void afterTextChanged(Editable s) {                SetDeawable();            }        });        SetDeawable();    }    /**     *     */    public void SetDeawable() {        if (this.length() <=0) {            this.setCompoundDrawablesWithIntrinsicBounds(null, null, imgInable, null);        } else {            this.setCompoundDrawablesWithIntrinsicBounds(null, null, imgAble, null);        }    }    @Override    public boolean onTouchEvent(MotionEvent event) {        if (imgAble != null && event.getAction() == MotionEvent.ACTION_UP) {            int eventX = (int) event.getRawX();            int eventY = (int) event.getRawY();            Log.e(TAG, "eventX = " + eventX + "; eventY = " + eventY);            Rect rect = new Rect();            this.getGlobalVisibleRect(rect);            rect.left = rect.right - imgAble.getMinimumWidth();            if (rect.contains(eventX, eventY)) {                Log.d(TAG, "删除效果");                this.setText("");            }        }        return super.onTouchEvent(event);    }    @Override    protected void finalize() throws Throwable {        super.finalize();    }}

Layout布局文件

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/activity_main"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:gravity="center"    tools:context="com.example.liushuaitao.a01edtitextwithdel.MainActivity">    <com.example.liushuaitao.a01edtitextwithdel.MyEditTextWithDel.EditTextWithDel        android:layout_width="300dp"        android:layout_height="wrap_content"        android:gravity="center_vertical"        android:background="@drawable/ed_bg"        android:padding="10dp"        android:hint="请输入密码"/></RelativeLayout>

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