package com.example.datalibrary.view;
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import android.annotation.SuppressLint;
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import android.content.Context;
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import android.graphics.Canvas;
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import android.graphics.Color;
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import android.graphics.Paint;
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import android.util.AttributeSet;
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import android.widget.EditText;
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@SuppressLint("AppCompatCustomView")
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public class UnderLineEditText extends EditText {
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private Paint paint;
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private static final int DEFAULT_LENGTH = 2;
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public UnderLineEditText(Context context, AttributeSet attrs) {
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super(context, attrs);
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// 设置画笔的属性
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paint = new Paint();
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paint.setStyle(Paint.Style.STROKE);
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// 设置画笔颜色为红色
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paint.setColor(Color.BLACK);
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}
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@Override
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protected void onDraw(Canvas canvas) {
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super.onDraw(canvas);
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/**canvas画直线，从左下角到右下角，this.getHeight()-2是获得父edittext的高度，但是必须要-2这样才能保证
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* 画的横线在edittext上面，和原来的下划线的重合
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*/
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canvas.drawLine(0, this.getHeight() - DEFAULT_LENGTH, this.getWidth() - DEFAULT_LENGTH,
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this.getHeight() - DEFAULT_LENGTH, paint);
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}
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}
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