Android edittext被截断

我在onDraw中创建了一个自定义EditText视图，该视图的意思是有一个红色的边距线。问题是，当您向下滚动时，该行消失。此代码只是在values文件夹中预先定义了一个预定义的边距，然后使用colors.xml中的预定义颜色对其进行着色。这里是我的代码：Android edittext被截断

package com.lioncode.notepad; 

import android.content.Context; 
import android.content.res.Resources; 
import android.graphics.Canvas; 
import android.graphics.Color; 
import android.graphics.Paint; 
import android.graphics.Paint.Style; 
import android.graphics.Rect; 
import android.util.AttributeSet; 
import android.widget.EditText; 

Public class LinedEditText extends EditText { 

private static Paint linePaint; 

static { 
    linePaint = new Paint(); 
    linePaint.setColor(Color.DKGRAY); 
    linePaint.setStyle(Style.STROKE); 
} 

public LinedEditText(Context context, AttributeSet attributes) { 
    super(context, attributes); 
    init(); 
} 

private Paint marginPaint; 
private float margin; 
private int paperColor; 

private void init() { 
    Resources myResources = getResources(); 

    marginPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 
    marginPaint.setColor(myResources.getColor(R.color.notepad_margin)); 

    paperColor = myResources.getColor(R.color.notepad_paper); 
    margin = myResources.getDimension(R.dimen.notepaper_margin); 

} 

@Override 
protected void onDraw(Canvas canvas) { 
    Rect bounds = new Rect(); 
    int firstLineY = getLineBounds(0, bounds); 
    int lineHeight = getLineHeight(); 
    int totalLines = Math.max(getLineCount(), getHeight()/lineHeight); 

    for (int i = 0; i < totalLines; i++) { 
     int lineY = firstLineY + i * lineHeight; 
     canvas.drawLine(bounds.left, lineY, bounds.right, lineY, linePaint); 
    } 

    // draw margin 
    canvas.drawLine(margin, 0, margin, getMeasuredHeight(), marginPaint); 

    // move the text from along the margin 
    canvas.save(); 
    canvas.translate(margin, 0); 
    super.onDraw(canvas); 
} 

    }

来源

2013-01-13 AndroidDev

用用户可能永远不会到达的高数字替换总行数。

来源

2013-04-01 22:45:29 user2178120

Android edittext被截断

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