android绘制进度条-蒲公英云

android绘制进度条

小鱼儿 2022-08-08 12:57 313阅读 0赞

public class MainActivity extends Activity {

private CircleProgress cp;  
private ImageView iv;  
int finish = 80;  
private int centerX,centerY;  
private int textSize = 38;  
private int roundWidth = 14;  
private float finished =80,unfinished = 20;  
Paint paint;  
@Override  
protected void onCreate(Bundle savedInstanceState) \{  
    super.onCreate(savedInstanceState);  
    setContentView(R.layout.login\_activity);  
    cp = (CircleProgress) this.findViewById(R.id.cp\_home);  
    iv=(ImageView) this.findViewById(R.id.iv);  
    if(iv == null)\{  
        Log.v("iv", "null");  
        return;  
    \}  
    drawProgress();  
\}  
public void drawCircle(View view)\{  
    cp.setProgress(finish,100 - finish);  
    finish--;  
\}  
private void drawProgress()\{  
    Bitmap bitmap1 = null;  
    Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.chart\_bg).  
                    copy(Bitmap.Config.ARGB\_8888, true);  
    bitmap1 = Bitmap.createBitmap(bitmap);  
    centerX = bitmap1.getWidth()/2;  
    centerY = bitmap1.getHeight()/2;  
    Canvas canvas = new Canvas(bitmap1);  
    paint = new Paint();  
    drawText(canvas);  
    drawTaskFinish(canvas);  
    drawTaskUnfinish(canvas);  
    iv.setImageBitmap(bitmap1);  
\}  
private void drawText(Canvas canvas)\{  
    //半径  
    int radius = (int)(centerX - roundWidth/2);  
    paint.setColor(Color.parseColor("\#3061AE"));  
    paint.setStrokeWidth(0);  
    paint.setTextSize(textSize);  
    paint.setTypeface(Typeface.DEFAULT\_BOLD); //设置字体  
    int percent = (int)((finished / (finished + unfinished)) \* 100);  
    float textWidth = paint.measureText(percent + "%");  
    canvas.drawText(percent + "%", centerX - textWidth / 2, centerY + textSize/3, paint);  
    paint.setStrokeWidth(roundWidth); //设置圆环的宽度  
    paint.setColor(Color.parseColor("\#FF721A"));  //设置进度的颜色  
    paint.setStyle(Style.STROKE);  
    RectF oval = new RectF(centerX - radius, centerY - radius, centerX  
            + radius, centerY + radius);  
    if(percent >0)\{  
        //根据进度画圆弧，同时改变起始角度，进行绘制  
        canvas.drawArc(oval, -90, 360 \* percent/100, false, paint);  
    \}  
\}  
/\*\*  
 \* 绘制完成任务的形状  
 \* @param canvas  
 \*/  
private void drawTaskFinish(Canvas canvas)\{  
    if(finished <=0)\{  
        return;  
    \}  
    int centerFinishX = (int) (centerX + centerX \* 0.6);  
    paint.setColor(Color.parseColor("\#FF721A"));  
    paint.setStyle(Paint.Style.FILL\_AND\_STROKE);  
    canvas.drawCircle(centerFinishX, centerFinishX, 20, paint);  
    paint.setColor(Color.WHITE);  
    paint.setStrokeWidth(0);  
    paint.setTextSize(12);  
    paint.setTypeface(Typeface.DEFAULT\_BOLD);  
    float textWidth = paint.measureText(finished + "万");  
    canvas.drawText(finished + "万", centerFinishX - textWidth / 2,  
                    centerFinishX + 6, paint);  
\}  
/\*\*  
 \* 绘制未完成的任务图形  
 \* @param canvas  
 \*/  
private void drawTaskUnfinish(Canvas canvas)\{  
    if(unfinished <=0)\{  
        return;  
    \}  
    int centerUnfinishX = (int) (centerX - centerX \* 0.6);  
    paint.setColor(Color.parseColor("\#1FC2F3"));  
    paint.setStyle(Paint.Style.FILL\_AND\_STROKE);  
    canvas.drawCircle(centerUnfinishX, centerUnfinishX, 20, paint);  
    paint.setColor(Color.WHITE);  
    paint.setStrokeWidth(0);  
    paint.setTextSize(12);  
    paint.setTypeface(Typeface.DEFAULT\_BOLD);  
    float textWidth = paint.measureText(unfinished + "万");  
    canvas.drawText(unfinished + "万", centerUnfinishX - textWidth / 2,  
                    centerUnfinishX + 6, paint);  
\}