圆形边框LinerLayout

Question

所以问题How to add border around linear layout except at the bottom?回答我的问题部分，但我似乎无法弄清楚如何使边角圆..

Answer 1

1. 创建布局文件夹命名为round_border一个XML文件。

2. 现在把这个代码在XML文件中：

   <shape xmlns:android="http://schemas.android.com/apk/res/android"> 
   <stroke android:width="4dp" android:color="#FF00FF00" /> 
   <solid android:color="#ffffff" /> 
   <padding android:left="7dp" android:top="7dp" 
        android:right="7dp" android:bottom="7dp" /> 
   <corners android:radius="10dp" /> 
   

3. 现在使用这个文件作为LinearLayout的这样一个背景：

   <LinearLayout android:id="@+id/LinearLayout01" 
   android:layout_width="fill_parent" 
   android:layout_height="fill_parent" 
   android:orientation="vertical" 
   android:padding="20dip" 
   android:background="@drawable/round_border"> 
   

Answer 2

在您的线性布局

android:background="@drawable/bkg" 

定义如下XML中可绘制夹。

bkg.xml

<?xml version="1.0" encoding="UTF-8"?> 
<shape xmlns:android="http://schemas.android.com/apk/res/android" 
android:shape="rectangle"> 
<solid android:color="#10EB0A"/>  
<stroke android:width="3dp" 
    android:color="#0FECFF" /> 
<padding android:left="5dp" 
    android:top="5dp" 
    android:right="5dp" 
    android:bottom="5dp"/> 
<corners android:bottomRightRadius="7dp" 
    android:bottomLeftRadius="7dp" 
    android:topLeftRadius="7dp" 
    android:topRightRadius="7dp"/> 
</shape> 

Answer 3

这是一个自定义绘制，你可以使用：

class RoundedImageDrawable extends Drawable { 

    private Bitmap mBitmap; 
    private Matrix mMatrix; 
    private Path mPath; 
    private float mRx; 
    private float mRy; 

    public RoundedImageDrawable(Resources res , int id, float rx, float ry) { 
     mBitmap = BitmapFactory.decodeResource(res, id); 
     mMatrix = new Matrix(); 
     mPath = new Path(); 
     mRx = rx; 
     mRy = ry; 
    } 

    @Override 
    protected void onBoundsChange(Rect bounds) { 
     RectF src = new RectF(0, 0, mBitmap.getWidth(), mBitmap.getHeight()); 
     RectF dst = new RectF(bounds); 
     mMatrix.setRectToRect(src, dst, Matrix.ScaleToFit.FILL); 
     mPath.addRoundRect(dst, mRx, mRy, Direction.CW); 
    } 

    @Override 
    public void draw(Canvas canvas) { 
     canvas.save(); 
     canvas.clipPath(mPath); 
     canvas.drawBitmap(mBitmap, mMatrix, null); 
     canvas.restore(); 
    } 

    @Override 
    public void setAlpha(int alpha) { 
    } 

    @Override 
    public void setColorFilter(ColorFilter cf) { 
    } 

    @Override 
    public int getOpacity() { 
     return PixelFormat.TRANSLUCENT; 
    } 
} 

，并在活动中使用它：

LinearLayout ll = findViewById(R.id.layout); 
Drawable d = new RoundedImageDrawable(getResources(), R.drawable.background, 20, 20); 
ll.setBackgroundDrawable(d);