Android自定义控件实现折线图

/*绘制三条横线*/
for(int i=0;i<3;i++){
  canvas.drawLine(textWide, mLineYs[i], totalWidth, mLineYs[i], mPaintLine);
}
/*绘制八条竖线*/
for(int i=0;i<8;i++){
  canvas.drawLine(mLineXs[i], 0, mLineXs[i], totalHeight, mPaintLine);
}

/*绘制第一条折线的路径*/
for (int i = 0; i 

mPaintLine2.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SCREEN));
mPaintLine1.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SCREEN));

final Random random=new Random();
final LineChartView myView=(LineChartView)findViewById(R.id.custom_view);
final LineChartView.Performance[] performances1=new LineChartView.Performance[8];
final LineChartView.Performance[] performances2=new LineChartView.Performance[8];
myView.setOnClickListener(new View.OnClickListener(){
  @Override
  public void onClick(View v){
    for(int i=0;i

public class LineChartView extends View {
  private Context context;
  /*动画插值器*/
  DecelerateInterpolator mDecelerateInterpolator = new DecelerateInterpolator();
  /*动画刷新的次数*/
  private int mDuration = 10;
  /*当前动画进度值*/
  private int mCurrentTime = 0;
  private Performance[] mPerformance_1, mPerformance_2;
  /*两条折线的颜色*/
  private int mLineColor1, mLineColor2;
  /*绘制表头文字画笔*/
  private Paint mPaintText = new Paint();
  /*绘制表格的画笔*/
  private Paint mPaintLine = new Paint();
  /*第一条折线的画笔*/
  private Paint mPaintLine1 =new Paint();
  /*第二条折线的画笔*/
  private Paint mPaintLine2 =new Paint();
  /*坐标点的小圆点画笔*/
  private Paint mPointPaint = new Paint();
  private float mSmallDotRadius = 4;
  private TypedValue typedValue;
  private int mPaintClolor;
  /*Handler刷新界面产生动画效果*/
  private Handler mHandler = new Handler();
  private Runnable mAnimation = new Runnable() {
    @Override
    public void run() {
      if (mCurrentTime  8 &＃63; 8 : performance1.length);
    mPerformance_2 = Arrays.copyOf(performance2, performance2.length > 8 &＃63; 8 : performance2.length);
    if (isShown()) {
      mCurrentTime = 0;
      this.invalidate();
    }
  }
 
  /**
   * 设置折线1的颜色
   *
   * @param mLineColor1
   */
  public void setLineColor1(int mLineColor1) {
    this.mLineColor1 = mLineColor1;
  }
 
  /**
   * 设置折线2的颜色
   *
   * @param mLineColor2
   */
  public void setLineColor2(int mLineColor2) {
    this.mLineColor2 = mLineColor2;
  }
 
  private void init() {
    mLineColor1=Color.BLUE;
    mLineColor2 = Color.GREEN;
    typedValue=new TypedValue();
    context.getTheme().resolveAttribute(R.attr.title_bar,typedValue,true);
    mPaintClolor =getResources().getColor(typedValue.resourceId);
 
    final LineChartView.Performance[] performances1=new LineChartView.Performance[8];
    final LineChartView.Performance[] performances2=new LineChartView.Performance[8];
    final Random random=new Random();
    for(int i=0;i