动态地将一个圆圈在android系统 [英] Divide a circle dynamically in android

问题描述

我在Android应用程序的工作，我有刺的列表。如果串的列表中包含3串，我必须划分圆分成3等份和三个串中的圆的划分区域结合。我怎样才能做到这一点。哪个部件应该使用，使这个圈子。请HEL 点我。

I am working in an android application and I have a List of stings. If the List of string contains 3 string, I have to divide the circle into 3 equal parts and bind the three string in the divided area of the circle. How can I do this. Which widget should I use to make this circle. Please help me.

推荐答案

这只是一个样本。你需要根据自己的需要进行修改。既然你问了一个示例我已经粘贴下面code。

This is only a sample. You need to modify according to to your needs. Since you asked for a sample i have pasted the below code.

http://developer.android.com/training/custom-查看/自定义drawing.html 。文档在图纸上。有在链路

http://developer.android.com/training/custom-views/custom-drawing.html. Documentation on drawing. There is a sample at the end of the link

使用achartengine是容易的。 http://www.achartengine.org/

Using achartengine is easy. http://www.achartengine.org/

有关使用achartengine饼图。的http://wptrafficanalyzer.in/blog/android-drawing-pie-chart-using-achartengine/.

For pie chart using achartengine. http://wptrafficanalyzer.in/blog/android-drawing-pie-chart-using-achartengine/.

要吸取视图，你可以使用下面的示例。

To draw on view you can use the following sample.

 public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    MyView mv= new MyView(this);
    setContentView(mv);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.activity_main, menu);
    return true;
}
class MyView extends View
{
    Context c;
      private Bitmap  mBitmap;
        private Canvas  mCanvas;
        private Path    mPath;
        private Paint   mBitmapPaint;
        private Paint mpaint,paint2;

    public MyView(Context context) {
        super(context);
        c= context;
        mpaint= new Paint();
        mpaint.setColor(Color.RED);
        mpaint.setStyle(Paint.Style.FILL);
        paint2 = new Paint();
        paint2.setColor(Color.GREEN);
        paint2.setStrokeWidth(10);
            mBitmapPaint = new Paint();
            mBitmapPaint.setColor(Color.RED);
        // TODO Auto-generated constructor stub
    }
      @Override
        protected void onSizeChanged(int w, int h, int oldw, int oldh) {
            super.onSizeChanged(w, h, oldw, oldh);
            mBitmap = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
            mCanvas = new Canvas(mBitmap);
        }

        @Override
        protected void onDraw(Canvas canvas) {
             Display display = ( (Activity) c).getWindowManager().getDefaultDisplay();  
            float w = display.getWidth(); 
            float h = display.getHeight();
           canvas.drawCircle(w/2, h/2, 350, mpaint);
           canvas.drawLine(w/2, h/2, 20, h/2, paint2);

        }
}
}

您与canvas.drawText（文字，X，Y，油漆）绘制文本。请根据你的需求是一样的。在视图中添加动画。

You draw text with canvas.drawText(text, x, y, paint). Modify the same according to your needs. Add Animation on the view.

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