改变 Android(安卓)EditText 的边框

1.创建一个自己的 EditText Widget,代码如下：

package com.treasure.note.control;import android.content.Context;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.util.AttributeSet;import android.widget.EditText;public class CustomEditText extends EditText{private Paint mPaint;public CustomEditText(Context context, AttributeSet attrs){super(context, attrs);mPaint = new Paint();mPaint.setStyle(Paint.Style.STROKE);mPaint.setColor(Color.BLUE);}@Overrideprotected void onDraw(Canvas canvas) {super.onDraw(canvas);// 画底线canvas.drawLine(0, this.getHeight() - 1, this.getWidth() - 1, this.getHeight() - 1, mPaint);}}

2.在layout文件夹下编写一个布局文件，代码如下：

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:gravity="center"    android:orientation="vertical" >        <TextView android:id="@+id/text_title"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="04月26日"        android:textSize="30sp"/>        <com.treasure.note.control.CustomEditText android:id="@+id/text_content"        android:layout_width="match_parent"        android:layout_height="match_parent"        style="?android:attr/textViewStyle"        android:background="@color/white"        android:textColor="@color/black"        android:gravity="left"/></LinearLayout>

3.测试自己的 EditText Widget,代码如下：

package com.treasure.note.ui;import android.app.Activity;import android.os.Bundle;public class TestEditText extends Activity{@Overrideprotected void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.edit_memo);}}

4.结果如图所示：

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