Android绘图：360加速球

自定义View
主函数
布局

自定义View

public class MyPathView extends View {private Paint mPaint;private Paint mPaintPoint;private int mWidth;private int mHeight;private Path mPath;private Paint mPaintText;private Bitmap mBitmapBubble;private  Canvas mCanvasBit;private int currentProgress;private static final int NEED_INVALIDATE=0X23;private int count=0;private int size=0;private boolean isAdd=true;private Handler handler=new Handler(){@Overridepublic void handleMessage(Message msg) {super.handleMessage(msg);switch (msg.what){case NEED_INVALIDATE:count+=5;if (count>140){count=0;}if (isAdd){size++;if (size>20){isAdd=false;}}else {size--;if (size<-21){isAdd=true;}}invalidate();handler.sendEmptyMessageDelayed(NEED_INVALIDATE,50);break;}}};public int getCurrentProgress() {return currentProgress;}public void setCurrentProgress(int currentProgress) {this.currentProgress = currentProgress;invalidate();//告诉UI线程重新绘制}public MyPathView(Context context, AttributeSet attrs) {super(context, attrs);mPaint=new Paint();mPaint.setColor(Color.RED);mPaint.setStyle(Paint.Style.FILL);
//        mPaint.setStrokeWidth(5);
//        mPaint.setTextSize(50);mPaint.setAntiAlias(true);//设置抗锯齿mPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));//只允许相交部分显现mPath=new Path();mPaintText=new Paint();mPaintText.setAntiAlias(true);mPaintText.setTextSize(100);mPaintText.setColor(Color.GREEN);mPaintText.setTextAlign(Paint.Align.CENTER);mPaintPoint=new Paint();mPaintPoint.setColor(Color.BLUE);mPaintPoint.setStrokeWidth(10);mPaintPoint.setStyle(Paint.Style.FILL);handler.sendEmptyMessageDelayed(NEED_INVALIDATE,1000);}public MyPathView(Context context) {super(context);}@Overrideprotected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {super.onMeasure(widthMeasureSpec, heightMeasureSpec);mWidth = getDefaultSize(getSuggestedMinimumWidth(), widthMeasureSpec);mHeight = getDefaultSize(getSuggestedMinimumHeight(), heightMeasureSpec);setMeasuredDimension(getDefaultSize(getSuggestedMinimumWidth(), widthMeasureSpec),getDefaultSize(getSuggestedMinimumHeight(), heightMeasureSpec));mBitmapBubble=Bitmap.createBitmap(mWidth,mHeight,Bitmap.Config.ARGB_8888);mCanvasBit=new Canvas(mBitmapBubble);}@Overrideprotected void onDraw(Canvas canvas) {super.onDraw(canvas);canvas.drawColor(Color.argb(0xff, 0x08, 0x7e, 0x72));//设置画布的颜色mCanvasBit.drawCircle(300, 300, 150, mPaintPoint);mPath.reset();mPath.moveTo(500, 450-currentProgress*300/100);mPath.lineTo(500, 500);mPath.lineTo(count, 500);mPath.lineTo(count,450-currentProgress*300/100);
//        mPath.reset();//重置，避免波浪线加宽
//        mPath.moveTo(count, mHeight / 2);for (int i=0;i<10;i++){//画出十个波浪形mPath.rQuadTo(20,8,40,0);mPath.rQuadTo(20,-8,40,0);}mPath.close();mCanvasBit.drawPath(mPath, mPaint);canvas.drawBitmap(mBitmapBubble, 0, 0, null);canvas.drawText(currentProgress + "%", 300, 300,mPaintText);}}

主函数

public class MainActivity extends AppCompatActivity {private Button mButtonStart;private MyPathView myPathView;private int progress;private Handler handler=new Handler(){@Overridepublic void handleMessage(Message msg) {super.handleMessage(msg);switch (msg.what){case 0x23:progress++;if (progress<=100){myPathView.setCurrentProgress(progress);handler.sendEmptyMessageDelayed(0x23,200);}break;}}};@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mButtonStart= (Button) findViewById(R.id.button_start);myPathView= (MyPathView) findViewById(R.id.myPathView);mButtonStart.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {handler.sendEmptyMessageDelayed(0x23,1000);}});}}

布局

<com.example.administrator.definedviewdemo.Wiget.MyPathViewandroid:layout_width="match_parent"android:layout_height="match_parent"android:id="@+id/myPathView"/><Buttonandroid:id="@+id/button_start"android:text="CPU占有率"android:layout_width="wrap_content"android:layout_height="wrap_content" />

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Android绘图：360加速球

自定义View

主函数

布局

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