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如何为ImageView设置六边形形状

androidimageviewandroid-imageview
29
如何将 ImageView 转换为六边形形状？是否可以用相同的方法实现？如果可以，请说明方法。如果不行，那该如何实现？
<shape xmlns:android="http//schemas.android.com/apk/res/android"
       android:shape="hexagon">
  <solid android:color="#ffffffff" />
  <size android:width="60dp"
        android:height="40dp" />
</shape>

截图

在此输入图片描述

在此我无法对图片进行遮罩，因为我无法检测应该裁剪哪一部分位图才能得到六边形形状的位图。因此，我正在寻找答案，以将六边形形状应用于ImageView。

嗨，你解决这个问题了吗？ - Rat-a-tat-a-tat Ratatouille
@Rat-a-tat-a-tatRatatouille 还没有。 - N Sharma
你看过这个了吗？ - Rat-a-tat-a-tat Ratatouille
@Rat-a-tat-a-tatRatatouille但是他们都在imageview中绘制形状，而不是将imageview的结构制作成六边形。我想要将imageview的形状制作成六边形，这样无论我设置什么图像，它都会以六边形的形式设置。 - N Sharma
你尝试过图像遮罩吗？请参考以下链接： https://dev59.com/3FXTa4cB1Zd3GeqPzTI1 - Aditya_Anand
@Aditya_Anand 我不是在尝试使用GLSurfaceView。 - N Sharma
9个回答
66

尝试使用这个 View。你可能需要根据自己的特定需求进行调整，但它可以在一个视图上绘制一个带有边框的六边形遮罩层。背景资源放置在遮罩层下面。

结果如下:

enter image description here

代码如下:

HexagonMaskView.java

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Path;
import android.graphics.Region;
import android.util.AttributeSet;
import android.view.View;

public class HexagonMaskView extends View {
    private Path hexagonPath;
    private Path hexagonBorderPath;
    private float radius;
    private float width, height;
    private int maskColor;

public HexagonMaskView(Context context) {
    super(context);
    init();
}

public HexagonMaskView(Context context, AttributeSet attrs) {
    super(context, attrs);
    init();
}

public HexagonMaskView(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);
    init();
}

private void init() {
    hexagonPath = new Path();
    hexagonBorderPath = new Path();
    maskColor = 0xFF01FF77;
}

public void setRadius(float r) {
    this.radius = r;
    calculatePath();
}

public void setMaskColor(int color) {
    this.maskColor = color;
    invalidate();
}

private void calculatePath() {
    float triangleHeight = (float) (Math.sqrt(3) * radius / 2);
    float centerX = width/2;
    float centerY = height/2;
    hexagonPath.moveTo(centerX, centerY + radius);
    hexagonPath.lineTo(centerX - triangleHeight, centerY + radius/2);
    hexagonPath.lineTo(centerX - triangleHeight, centerY - radius/2);
    hexagonPath.lineTo(centerX, centerY - radius);
    hexagonPath.lineTo(centerX + triangleHeight, centerY - radius/2);
    hexagonPath.lineTo(centerX + triangleHeight, centerY + radius/2);
    hexagonPath.moveTo(centerX, centerY + radius);

    float radiusBorder = radius - 5;    
    float triangleBorderHeight = (float) (Math.sqrt(3) * radiusBorder / 2);
    hexagonBorderPath.moveTo(centerX, centerY + radiusBorder);
    hexagonBorderPath.lineTo(centerX - triangleBorderHeight, centerY + radiusBorder/2);
    hexagonBorderPath.lineTo(centerX - triangleBorderHeight, centerY - radiusBorder/2);
    hexagonBorderPath.lineTo(centerX, centerY - radiusBorder);
    hexagonBorderPath.lineTo(centerX + triangleBorderHeight, centerY - radiusBorder/2);
    hexagonBorderPath.lineTo(centerX + triangleBorderHeight, centerY + radiusBorder/2);
    hexagonBorderPath.moveTo(centerX, centerY + radiusBorder);
    invalidate();
}

@Override
public void onDraw(Canvas c){
    super.onDraw(c);
    c.clipPath(hexagonBorderPath, Region.Op.DIFFERENCE);
    c.drawColor(Color.WHITE);
    c.save();
    c.clipPath(hexagonPath, Region.Op.DIFFERENCE);
    c.drawColor(maskColor);
    c.save();
}

// getting the view size and default radius
@Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec){
    super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    width = MeasureSpec.getSize(widthMeasureSpec);
    height =  MeasureSpec.getSize(heightMeasureSpec);
    radius = height / 2 - 10;
    calculatePath();
}
}

更新于 2016年07月29日

更好的方法是只剪切源图像而不涂绘整个视图的背景。使用ImageView作为基类以从scaleType中受益。我还进行了一些代码重构。

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.PorterDuff;
import android.graphics.Region;
import android.util.AttributeSet;
import android.widget.ImageView;

public class HexagonMaskView extends ImageView {
    private Path hexagonPath;
    private Path hexagonBorderPath;
    private Paint mBorderPaint;

    public HexagonMaskView(Context context) {
        super(context);
        init();
    }

    public HexagonMaskView(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public HexagonMaskView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }

    private void init() {
        this.hexagonPath = new Path();
        this.hexagonBorderPath = new Path();

        this.mBorderPaint = new Paint();
        this.mBorderPaint.setColor(Color.WHITE);
        this.mBorderPaint.setStrokeCap(Paint.Cap.ROUND);
        this.mBorderPaint.setStrokeWidth(50f);
        this.mBorderPaint.setStyle(Paint.Style.STROKE);
    }

    public void setRadius(float radius) {
        calculatePath(radius);
    }

    public void setBorderColor(int color) {
        this.mBorderPaint.setColor(color);
        invalidate();
    }

    private void calculatePath(float radius) {
        float halfRadius = radius / 2f;
        float triangleHeight = (float) (Math.sqrt(3.0) * halfRadius);
        float centerX = getMeasuredWidth() / 2f;
        float centerY = getMeasuredHeight() / 2f;

        this.hexagonPath.reset();
        this.hexagonPath.moveTo(centerX, centerY + radius);
        this.hexagonPath.lineTo(centerX - triangleHeight, centerY + halfRadius);
        this.hexagonPath.lineTo(centerX - triangleHeight, centerY - halfRadius);
        this.hexagonPath.lineTo(centerX, centerY - radius);
        this.hexagonPath.lineTo(centerX + triangleHeight, centerY - halfRadius);
        this.hexagonPath.lineTo(centerX + triangleHeight, centerY + halfRadius);
        this.hexagonPath.close();

        float radiusBorder = radius - 5f;
        float halfRadiusBorder = radiusBorder / 2f;
        float triangleBorderHeight = (float) (Math.sqrt(3.0) * halfRadiusBorder);

        this.hexagonBorderPath.reset();
        this.hexagonBorderPath.moveTo(centerX, centerY + radiusBorder);
        this.hexagonBorderPath.lineTo(centerX - triangleBorderHeight, centerY + halfRadiusBorder);
        this.hexagonBorderPath.lineTo(centerX - triangleBorderHeight, centerY - halfRadiusBorder);
        this.hexagonBorderPath.lineTo(centerX, centerY - radiusBorder);
        this.hexagonBorderPath.lineTo(centerX + triangleBorderHeight, centerY - halfRadiusBorder);
        this.hexagonBorderPath.lineTo(centerX + triangleBorderHeight, centerY + halfRadiusBorder);
        this.hexagonBorderPath.close();
        invalidate();
    }

    @Override
    public void onDraw(Canvas c) {
        c.drawPath(hexagonBorderPath, mBorderPaint);
        c.clipPath(hexagonPath, Region.Op.INTERSECT);
        c.drawColor(Color.TRANSPARENT, PorterDuff.Mode.CLEAR);
        super.onDraw(c);
    }

    @Override
    public void onMeasure(int widthMeasureSpec, int heightMeasureSpec){
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        int width = MeasureSpec.getSize(widthMeasureSpec);
        int height = MeasureSpec.getSize(heightMeasureSpec);
        setMeasuredDimension(width, height);
        calculatePath(Math.min(width / 2f, height / 2f) - 10f);
    }
}

示例布局：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:background="@android:color/holo_green_dark">

    <com.scelus.hexagonmaskimproved.HexagonMaskView
        android:id="@+id/image"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:src="@drawable/bear"
        android:background="@android:color/holo_green_light"/>

</RelativeLayout>

New result

如何在ImageView中调用它？我正在使用ImageLoader加载图像，你能帮我吗？ - sherin
如何在 ImageView 中调用这个？我正在使用 ImageLoader 加载图片，你能帮我吗？ - Prasad
1
我在六边形外面得到了一个绿色的背景，我该如何去掉它？ - Chris Gomez
1
有没有办法去除白色边框外的区域？我假设该区域是掩码颜色，但如果您删除掩码颜色，事情会变得混乱。有没有想过如何去除外部区域？ - mike20132013
1
它正在切换到全屏模式。如果你想缩小尺寸，它不起作用。 - AnAndroid
显示剩余4条评论
7

这是我目前的代码，它也支持阴影效果：

import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.PorterDuff;
import android.graphics.Shader;
import android.graphics.drawable.BitmapDrawable;
import android.util.AttributeSet;
import android.widget.ImageView;

public class HexagonImageView extends ImageView {

    private Path hexagonPath;
    private Path hexagonBorderPath;
    private float radius;
    private Bitmap image;
    private int viewWidth;
    private int viewHeight;
    private Paint paint;
    private BitmapShader shader;
    private Paint paintBorder;
    private int borderWidth = 4;

    public HexagonImageView(Context context) {
        super(context);
        setup();
    }

    public HexagonImageView(Context context, AttributeSet attrs) {
        super(context, attrs);
        setup();
    }

    public HexagonImageView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        setup();
    }

    private void setup() {
        paint = new Paint();
        paint.setAntiAlias(true);

        paintBorder = new Paint();
        setBorderColor(Color.WHITE);
        paintBorder.setAntiAlias(true);
        this.setLayerType(LAYER_TYPE_SOFTWARE, paintBorder);
        paintBorder.setShadowLayer(4.0f, 1.0f, 1.0f, Color.BLACK);

        hexagonPath = new Path();
        hexagonBorderPath = new Path();
    }

    public void setRadius(float r) {
        this.radius = r;
        calculatePath();
    }

    public void setBorderWidth(int borderWidth)  {
        this.borderWidth = borderWidth;
        this.invalidate();
    }

    public void setBorderColor(int borderColor)  {
        if (paintBorder != null)
            paintBorder.setColor(borderColor);

        this.invalidate();
    }

    private void calculatePath() {

        float triangleHeight = (float) (Math.sqrt(3) * radius / 2);
        float centerX = viewWidth/2;
        float centerY = viewHeight/2;

        hexagonBorderPath.moveTo(centerX, centerY + radius);
        hexagonBorderPath.lineTo(centerX - triangleHeight, centerY + radius/2);
        hexagonBorderPath.lineTo(centerX - triangleHeight, centerY - radius/2);
        hexagonBorderPath.lineTo(centerX, centerY - radius);
        hexagonBorderPath.lineTo(centerX + triangleHeight, centerY - radius/2);
        hexagonBorderPath.lineTo(centerX + triangleHeight, centerY + radius/2);
        hexagonBorderPath.moveTo(centerX, centerY + radius);

        float radiusBorder = radius - borderWidth;    
        float triangleBorderHeight = (float) (Math.sqrt(3) * radiusBorder / 2);

        hexagonPath.moveTo(centerX, centerY + radiusBorder);
        hexagonPath.lineTo(centerX - triangleBorderHeight, centerY + radiusBorder/2);
        hexagonPath.lineTo(centerX - triangleBorderHeight, centerY - radiusBorder/2);
        hexagonPath.lineTo(centerX, centerY - radiusBorder);
        hexagonPath.lineTo(centerX + triangleBorderHeight, centerY - radiusBorder/2);
        hexagonPath.lineTo(centerX + triangleBorderHeight, centerY + radiusBorder/2);
        hexagonPath.moveTo(centerX, centerY + radiusBorder);

        invalidate();
    }

    private void loadBitmap()  {
        BitmapDrawable bitmapDrawable = (BitmapDrawable) this.getDrawable();

        if (bitmapDrawable != null)
            image = bitmapDrawable.getBitmap();
    }

    @SuppressLint("DrawAllocation")
    @Override
    public void onDraw(Canvas canvas){
        super.onDraw(canvas);

        loadBitmap();

        // init shader
        if (image != null) {

            canvas.drawColor(Color.TRANSPARENT, PorterDuff.Mode.CLEAR);

            shader = new BitmapShader(Bitmap.createScaledBitmap(image, canvas.getWidth(), canvas.getHeight(), false), Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
            paint.setShader(shader);

            canvas.drawPath(hexagonBorderPath, paintBorder);
            canvas.drawPath(hexagonPath, paint);
        }

    }

    @Override
    public void onMeasure(int widthMeasureSpec, int heightMeasureSpec){
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);

        int width = measureWidth(widthMeasureSpec);
        int height = measureHeight(heightMeasureSpec, widthMeasureSpec);

        viewWidth = width - (borderWidth * 2);
        viewHeight = height - (borderWidth * 2);

        radius = height / 2 - borderWidth;

        calculatePath();

        setMeasuredDimension(width, height);
    }

    private int measureWidth(int measureSpec)   {
        int result = 0;
        int specMode = MeasureSpec.getMode(measureSpec);
        int specSize = MeasureSpec.getSize(measureSpec);

        if (specMode == MeasureSpec.EXACTLY)  {
            result = specSize;
        }
        else {
            result = viewWidth;
        }

        return result;
    }

    private int measureHeight(int measureSpecHeight, int measureSpecWidth)  {
        int result = 0;
        int specMode = MeasureSpec.getMode(measureSpecHeight);
        int specSize = MeasureSpec.getSize(measureSpecHeight);

        if (specMode == MeasureSpec.EXACTLY) {
            result = specSize;
        }
        else {
            result = viewHeight;
        }

        return (result + 2);
    }


}
你的回答比被采纳的更好用。 - suku
4

看这个例子，它创建了一个三角形，你可以从中得到逻辑 :)

http://looksok.wordpress.com/2013/08/24/android-triangle-arrow-defined-as-an-xml-shape/

我找到的另一种解决方案，但还没有测试过，所以也可以尝试一下。

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    TextView tv = (TextView) findViewById(R.id.text);

    Path path = new Path();
    float stdW = 100;
    float stdH = 100;
    float w3 = stdW / 3;
    float h2 = stdH / 2;
    path.moveTo(0, h2);
    h2 -= 6 / 2;
    path.rLineTo(w3, -h2);         path.rLineTo(w3, 0); path.rLineTo(w3, h2);
    path.rLineTo(-w3, h2); path.rLineTo(-w3, 0); path.rLineTo(-w3, -h2);
    Shape s = new PathShape(path, stdW, stdH);
    ShapeDrawable d = new ShapeDrawable(s);
    Paint p = d.getPaint();
    p.setColor(0xffeeeeee);
    p.setStyle(Style.STROKE);
    p.setStrokeWidth(6);

    tv.setBackgroundDrawable(d);
}

来源：Google讨论组

第三种解决方案 - 这可能是一个有用的库

PathDrawable是一种使用Path对象绘制简单形状的可绘制对象。

我尝试了你的解决方案，它使用上述方法绘制了六边形路径。我想将ImageView的形状设置为六边形，这样无论我设置什么图像，它都会在其中设置为六边形。 - N Sharma
嘿，看一下这个链接：http://codebybrian.com/2013/07/28/custom_view_regular_polygons.html 或许能帮到你。 - MilapTank
我已经看过了，它也只是在ImageView中简单地绘制六边形，但我想要将ImageView的形状变成六边形。 - N Sharma
4

您可以尝试以下几个方法：

  • You might want to try drawing a 9patch in top of your image.

  • There's also this short tuto by Romain Guy : http://www.curious-creature.org/2012/12/11/android-recipe-1-image-with-rounded-corners/

    BitmapShader shader;
shader = new BitmapShader(bitmap, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);

Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setShader(shader);

RectF rect = new RectF(0.0f, 0.0f, width, height);

// rect contains the bounds of the shape
// radius is the radius in pixels of the rounded corners
// paint contains the shader that will texture the shape
canvas.drawRoundRect(rect, radius, radius, paint);

    Instead of using drawRoundRect() method of canvas, you may try using drawPath() to get the desired shape.

    Hope this puts you on the right direction.

是的，我已经阅读了它，但我无法实现图像视图的六边形形状，所以我在这里问。 - N Sharma
3

虽然有些晚了，但我希望这可以帮助到某些人...

  public Bitmap getHexagonShape(Bitmap scaleBitmapImage) {
    // TODO Auto-generated method stub
    int targetWidth = 200;
    int targetHeight =200;
    Bitmap targetBitmap = Bitmap.createBitmap(targetWidth, 
            targetHeight,Bitmap.Config.ARGB_8888);

    Canvas canvas = new Canvas(targetBitmap);

    Path path = new Path();
    float stdW = 200;
    float stdH = 200;
    float w3 =stdW / 2;
    float h2 = stdH / 2;


    float radius=stdH/2-10;
    float triangleHeight = (float) (Math.sqrt(3) * radius / 2);
      float centerX = stdW/2;
      float centerY = stdH/2;
      path.moveTo(centerX, centerY + radius);
      path.lineTo(centerX - triangleHeight, centerY + radius/2);
      path.lineTo(centerX - triangleHeight, centerY - radius/2);
      path.lineTo(centerX, centerY - radius);
      path.lineTo(centerX + triangleHeight, centerY - radius/2);
      path.lineTo(centerX + triangleHeight, centerY + radius/2);
      path.moveTo(centerX, centerY + radius);


    canvas.clipPath(path);
    Bitmap sourceBitmap = scaleBitmapImage;
    canvas.drawBitmap(sourceBitmap, 
            new Rect(0, 0, sourceBitmap.getWidth(),
                    sourceBitmap.getHeight()), 
                    new Rect(0, 0, targetWidth,
                            targetHeight), null);
    return targetBitmap;
}




public static Bitmap drawableToBitmap (Drawable drawable) {
    if (drawable instanceof BitmapDrawable) {
        return ((BitmapDrawable)drawable).getBitmap();
    }

    Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap); 
    drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
    drawable.draw(canvas);

    return bitmap;
}

在需要使用的地方调用此函数

    Drawable drawable = getResources().getDrawable( R.drawable.placeholder );        
    Bitmap b=getHexagonShape(drawableToBitmap(drawable));
    img=(ImageView)findViewById(R.id.imageView);

    img.setImageBitmap(b);
1
你可以使用siamed的Android Shape ImageView。

https://github.com/siyamed/android-shape-imageview

<com.github.siyamed.shapeimageview.HexagonImageView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_margin="8dp"
    android:src="@drawable/neo"
    app:siBorderWidth="8dp"
    app:siBorderColor="@color/darkgray"/>

请在Github上阅读文档，有许多选项可供选择。
1

我使用了以下代码解决了这个问题：

    private Bitmap getHexagoneCroppedBitmap(Bitmap bitmap, int radius) {
        Bitmap finalBitmap;
        if (bitmap.getWidth() != radius || bitmap.getHeight() != radius)
               finalBitmap = Bitmap.createScaledBitmap(bitmap, radius, radius,
                            false);
        else
               finalBitmap = bitmap;
        Bitmap output = Bitmap.createBitmap(finalBitmap.getWidth(),
                     finalBitmap.getHeight(), Config.ARGB_8888);
        Canvas canvas = new Canvas(output);

        Paint paint = new Paint();
        final Rect rect = new Rect(0, 0, finalBitmap.getWidth(),
                     finalBitmap.getHeight());

        Point point1_draw = new Point(75, 0);
        Point point2_draw = new Point(0, 50);
        Point point3_draw = new Point(0, 100);
        Point point4_draw = new Point(75, 150);
        Point point5_draw = new Point(150, 100);
        Point point6_draw = new Point(150, 50);

        Path path = new Path();
        path.moveTo(point1_draw.x, point1_draw.y);
        path.lineTo(point2_draw.x, point2_draw.y);
        path.lineTo(point3_draw.x, point3_draw.y);
        path.lineTo(point4_draw.x, point4_draw.y);
        path.lineTo(point5_draw.x, point5_draw.y);
        path.lineTo(point6_draw.x, point6_draw.y);

        path.close();
        canvas.drawARGB(0, 0, 0, 0);
        paint.setColor(Color.parseColor("#BAB399"));
        canvas.drawPath(path, paint);
        paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
        canvas.drawBitmap(finalBitmap, rect, rect, paint);

        return output;
    }
1
我不确定原帖的作者是否得到了他所寻求的答案，但是我来尝试一下。
我创建了一个自定义视图，扩展了ImageView，可以更好地完成你的工作。这里的答案只是在ImageView内部创建了一个掩码，并强制你将图片设置为背景。
我的视图让你像标准位图一样设置图像，它处理了CenterCrop和图像缩放。它实际上将掩码设置在外部，并且具有相同的边框加投影效果。
如果这还不够，你可以轻松地通过扩展RenderShape类来创建自定义形状进行渲染。（库中包含4种形状：圆形、三角形、六边形和八边形）
请查看我的github。
干杯
1
下面的函数将您的图像作为输入位图读取，并返回一个六边形形状的位图。
public Bitmap getHexagonShape(Bitmap scaleBitmapImage) {
      // TODO Auto-generated method stub
      int targetWidth = 600;
      int targetHeight = 600;
      Bitmap targetBitmap = Bitmap.createBitmap(targetWidth, 
                                targetHeight,Bitmap.Config.ARGB_8888);

                    Canvas canvas = new Canvas(targetBitmap);

      Path path = new Path();
        float stdW = 300;
        float stdH = 300;
        float w3 =stdW / 2;
        float h2 = stdH / 2;
        path.moveTo(0, (float) (h2*Math.sqrt(3)/2));
        path.rLineTo(w3/2, -(float) (h2*Math.sqrt(3)/2)); path.rLineTo(w3, 0);   path.rLineTo(w3/2, (float) (h2*Math.sqrt(3)/2));
        path.rLineTo(-w3/2, (float) (h2*Math.sqrt(3)/2)); path.rLineTo(-w3, 0); path.rLineTo(-w3/2, -(float) (h2*Math.sqrt(3)/2));


                    canvas.clipPath(path);
      Bitmap sourceBitmap = scaleBitmapImage;
      canvas.drawBitmap(sourceBitmap, 
                                    new Rect(0, 0, sourceBitmap.getWidth(),
        sourceBitmap.getHeight()), 
                                    new Rect(0, 0, targetWidth,
        targetHeight), null);
      return targetBitmap;
     }
谢谢，你的代码帮了我大忙！:) - ADT
谢谢，但是在纵向模式下它只有部分六边形，在横向模式下是完整的六边形。 - Prasad
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