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Android 自定义EditText输入框 带清空旋钮

分类: IT文章 • 2024-12-22 19:52:13
Android 自定义EditText输入框 带清空按钮

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Android 自定义EditText输入框 带清空旋钮

 

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当用户输入字符后  EditText会自动在输入框的内部右侧出现删除按钮

重写EditText达到简化布局的效果
效果图:

Android 自定义EditText输入框 带清空旋钮

继承EditText

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    package com.example.myedittexttest;
 
import <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>.content.Context;
import <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>.graphics.Rect;
import <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>.graphics.drawable.Drawable;
import <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>.text.Editable;
import <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>.text.TextWatcher;
import <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>.util.AttributeSet;
import <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>.view.MotionEvent;
import <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>.widget.EditText;
 
public class MyEditText extends EditText {
    private final String TAG = "MyEditText";
    private Drawable dRight;
    private Rect rBounds;
 
    public MyEditText(Context paramContext) {
        super(paramContext);
        initEditText();
    }
 
    public MyEditText(Context paramContext, AttributeSet paramAttributeSet) {
        super(paramContext, paramAttributeSet);
        initEditText();
    }
 
    public MyEditText(Context paramContext, AttributeSet paramAttributeSet,int paramInt) {
        super(paramContext, paramAttributeSet, paramInt);
        initEditText();
    }
 
    // 初始化edittext 控件
    private void initEditText() {
        setEditTextDrawable();
        addTextChangedListener(new TextWatcher() { // 对文本内容改变进行监听
            @Override
            public void afterTextChanged(Editable paramEditable) {
            }
 
            @Override
            public void beforeTextChanged(CharSequence paramCharSequence, intparamInt1, int paramInt2, int paramInt3) {
            }
 
            @Override
            public void onTextChanged(CharSequence paramCharSequence, intparamInt1, int paramInt2, int paramInt3) {
                MyEditText.this.setEditTextDrawable();
            }
        });
    }
 
    // 控制图片的显示
    public void setEditTextDrawable() {
        if (getText().toString().length() == 0) {
            setCompoundDrawables(null, null, null, null);
        } else {
            setCompoundDrawables(null, null, this.dRight, null);
        }
    }
 
    @Override
    protected void onDetachedFromWindow() {
        super.onDetachedFromWindow();
        this.dRight = null;
        this.rBounds = null;
 
    }
 
    /**
     * 添加触摸事件 点击之后 出现 清空editText的效果
     */
    @Override
    public boolean onTouchEvent(MotionEvent paramMotionEvent) {
        if ((this.dRight != null) && (paramMotionEvent.getAction() == 1)) {
            this.rBounds = this.dRight.getBounds();
            int i = (int) paramMotionEvent.getRawX();// 距离屏幕的距离
            // int i = (int) paramMotionEvent.getX();//距离边框的距离
            if (i > getRight() - 3 * this.rBounds.width()) {
                setText("");
                paramMotionEvent.setAction(MotionEvent.ACTION_CANCEL);
            }
        }
        return super.onTouchEvent(paramMotionEvent);
    }
 
    /**
     * 显示右侧X图片的
     *
     * 左上右下
     */
    @Override
    public void setCompoundDrawables(Drawable paramDrawable1, Drawable paramDrawable2, Drawable paramDrawable3, Drawable paramDrawable4) {
        if (paramDrawable3 != null)
            this.dRight = paramDrawable3;
        super.setCompoundDrawables(paramDrawable1, paramDrawable2, paramDrawable3, paramDrawable4);
    }
}

XML布局:

 
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    <RelativeLayout xmlns:<a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>="http://schemas.<a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>.com/apk/res/<a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>"
    xmlns:tools="http://schemas.<a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>.com/tools"
    <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>:layout_width="match_parent"
    <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>:layout_height="match_parent"
    <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>:paddingBottom="@dimen/activity_vertical_margin"
    <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>:paddingLeft="@dimen/activity_horizontal_margin"
    <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>:paddingRight="@dimen/activity_horizontal_margin"
    <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >
 
    <com.example.myedittexttest.MyEditText
        <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>:id="@+id/edit_text"
        <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>:layout_width="fill_parent"
        <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>:layout_height="50dp"
        <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>:layout_marginTop="50dp"
        <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>:background="#88aaff"
        <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>:drawableRight="@drawable/edit_clear"
        <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>:textCursorDrawable="@null" />
 
    <Button
        <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>:id="@+id/button1"
        <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>:layout_width="wrap_content"
        <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>:layout_height="wrap_content"
        <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>:layout_below="@+id/edit_text"
        <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>:layout_marginTop="84dp"
        <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>:layout_toRightOf="@+id/textView1"
        <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>:text="Button" />
 
</RelativeLayout>

XML中的属性简介:

显示右侧的X 按钮:
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<a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>:drawableRight="@drawable/edit_clear"

设置光标的颜色    设置@null  表示光标的颜色和输入框的字体颜色相同

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<a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>:textCursorDrawable="@null"

显示隐藏光标

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    <a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>:cursorVisible="true"//显示
<a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>:cursorVisible="false"//隐藏
    

有误的地方请指正

每日精进
最后神兽镇楼
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    //┏┓　　　┏┓
//┏┛┻━━━┛┻┓
//┃　　　　　　　┃ 　
//┃　　　━　　　┃
//┃　┳┛　┗┳　┃
//┃　　　　　　　┃
//┃　　　┻　　　┃
//┃　　　　　　　┃
//┗━┓　　　┏━┛
//  ┃　　　┃   神兽保佑　　　　　　　　
//  ┃　　　┃   代码无BUG！
//  ┃　　　┗━━━┓
//  ┃　　　　　　　┣┓
//  ┃　　　　　　　┏┛
//  ┗┓┓┏━┳┓┏┛
//    ┃┫┫　┃┫┫
//    ┗┻┛　┗┻┛
    

关注微信号：javalearns   随时随地学Java

或扫一扫

 

Android 自定义EditText输入框 带清空旋钮

 

随时随地学Java

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