问题描述
- 求解为何int[]数组在赋值后，数组元素还是为空
-
这是自定义View里面的一个方法public void countPerDay(int[] newString){ countTimes = newString; Log.d("TestInCountPerDay", String.valueOf(countTimes[0]) + ":" + String.valueOf(countTimes[4]) + ":" + String.valueOf(countTimes[5]) + ":" + String.valueOf(countTimes[6])); postInvalidate(); }在另一个类的onReceive调用这个方法，传入参数
ResultView resultView = new ResultView(); resultView.countPerDay(drawCountTimes);View代码
public class ResultView extends View{ private float mMinSize; private int mWidth; private int mHeight; private int mHeightUp; private int mBackgroundCorner; private int mStrokeWidth; private int mArcCenterX; private int mArcCenterY; SimpleDateFormat sdf = new SimpleDateFormat("HH:mm"); Calendar ca = Calendar.getInstance(); private int[] days = new int[7]; # # private int[] countTimes = new int[7]; private RectF mArcRect; private Paint mBackgroundPaint; private Paint mStrokePaint; private Paint mTextPaint; private Paint mLinePaint; private Paint mBarPaint; private SweepGradient mSweepGradient; private int[] mSteps; private String screenOffTimes = ""; private String unlockTimes = ""; public ResultView(Context context) { super(context, null); } public ResultView(Context context, AttributeSet attrs) { this(context, attrs, 0); } public ResultView(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); setLayerType(View.LAYER_TYPE_SOFTWARE, null); init(); } //接受从Async传来的数据，把值附给给countTime public void countTimes(String string,String string2){ this.screenOffTimes = string; this.unlockTimes = string2; postInvalidate(); } ## public void countPerDay(int[] newString){ ## countTimes = newString; ## Log.d("TestInCountPerDay", String.valueOf(countTimes[0]) + ":" + String.valueOf(countTimes[4]) + ":" + String.valueOf(countTimes[5]) + ":" + String.valueOf(countTimes[6])); ## postInvalidate(); ## } public void init(){ mBackgroundPaint = new Paint(); mBackgroundPaint.setAntiAlias(true); mBackgroundPaint.setColor(Color.RED); mStrokePaint = new Paint(); mStrokePaint.setAntiAlias(true); mStrokePaint.setStyle(Paint.Style.STROKE); mStrokePaint.setDither(true); // set the dither to true mStrokePaint.setStrokeJoin(Paint.Join.ROUND); // set the join to round you want mStrokePaint.setStrokeCap(Paint.Cap.ROUND); // set the paint cap to round too mStrokePaint.setPathEffect(new CornerPathEffect(10)); // set the path effect when they join. mTextPaint = new Paint(); mTextPaint.setAntiAlias(true); mLinePaint = new Paint(); mLinePaint.setAntiAlias(true); mLinePaint.setColor(0xFF77838F); mLinePaint.setStyle(Paint.Style.STROKE); mLinePaint.setPathEffect(new DashPathEffect(new float[]{10, 3}, 0)); mBarPaint = new Paint(); mBarPaint.setAntiAlias(true); mBarPaint.setColor(0xFF63CFEC); mBarPaint.setStrokeCap(Paint.Cap.ROUND); mArcRect = new RectF(); //柱状图的数值如下 mSteps = new int[]{9000,12000,8900, 9200,7000,0,6000}; ca.setTime(new Date()); for (int i = 0;i<7;i++){ ca.add(Calendar.DATE, -1); days[6-i]= Integer.parseInt(new SimpleDateFormat("dd").format(ca.getTime())); } } private void initSize(){ mWidth = (int) (570*mMinSize); mHeight = (int) (650*mMinSize); mHeightUp = (int) (550*mMinSize); mBackgroundCorner = (int) (13*mMinSize); mStrokeWidth = (int) (20*mMinSize); mArcCenterX = mWidth/2; int arcRadius = (int) ((308 / 2) * mMinSize); mArcCenterY = (int) (200 * mMinSize); mArcRect.left = mArcCenterX - arcRadius; mArcRect.top = mArcCenterY - arcRadius; mArcRect.right = mArcCenterX + arcRadius; mArcRect.bottom = mArcCenterY + arcRadius; int[] colors = {0xFF9A9BF8,0xFF9AA2F7, 0xFF65CCD1,0xFF63D0CD,0xFF68CBD0,0xFF999AF6,0xFF9A9BF8}; float[] positions = {0,1f/6,2f/6,3f/6,4f/6,5f/6,1}; mSweepGradient = new SweepGradient(mArcCenterX, mArcCenterX, colors , positions); } @Override protected void onDraw(Canvas canvas) { ## Log.d("TestInOnDraw", String.valueOf(countTimes[0]) + ":" + String.valueOf(countTimes[4]) + ":" + String.valueOf(countTimes[5]) + ":" + String.valueOf(countTimes[6])); // 1.draw background mBackgroundPaint.setColor(0xFF4C5A67); drawUpRoundRect(0, 0, mWidth, mHeightUp, mBackgroundCorner, mBackgroundPaint, canvas); mBackgroundPaint.setColor(0xFF496980); drawBelowRoundRect(0, mHeightUp, mWidth, mHeight, mBackgroundCorner, mBackgroundPaint, canvas); // 2.draw arc mStrokePaint.setStrokeWidth(mStrokeWidth); mStrokePaint.setShader(mSweepGradient); canvas.drawArc(mArcRect, -240, 300, false, mStrokePaint); //Intent intent = new Intent(); //int a = Integer.parseInt(intent.getStringExtra("countTime")); // 3.draw text float xPos, yPos; mTextPaint.setTextAlign(Paint.Align.CENTER); mTextPaint.setColor(Color.WHITE); mTextPaint.setTextSize(80 * mMinSize); yPos = mArcCenterY-((mTextPaint.descent() + mTextPaint.ascent()) / 2); //drawText直接显示数值 canvas.drawText(screenOffTimes, mArcCenterX, yPos, mTextPaint); mTextPaint.setColor(0xFF828E98); mTextPaint.setTextSize(20 * mMinSize); yPos = 140*mMinSize -((mTextPaint.descent() + mTextPaint.ascent()) / 2); canvas.drawText("截至"+sdf.format(new Date())+"已点亮屏幕", mArcCenterX, yPos, mTextPaint); yPos = 260*mMinSize -((mTextPaint.descent() + mTextPaint.ascent()) / 2); canvas.drawText("其中解锁"+unlockTimes+"次", mArcCenterX, yPos, mTextPaint); mTextPaint.setColor(Color.WHITE); xPos = mArcCenterX - 40*mMinSize; yPos = 380 * mMinSize; canvas.drawText("第", xPos, yPos, mTextPaint); xPos = mArcCenterX + 40*mMinSize; canvas.drawText("名", xPos, yPos, mTextPaint); mTextPaint.setTextSize(30 * mMinSize); canvas.drawText("44", mArcCenterX, yPos, mTextPaint); mTextPaint.setTextSize(18*mMinSize); mTextPaint.setColor(0xFF77838F); mTextPaint.setTextAlign(Paint.Align.LEFT); xPos = 30*mMinSize; yPos = 420*mMinSize; canvas.drawText("最近7天",xPos, yPos, mTextPaint); mTextPaint.setTextAlign(Paint.Align.RIGHT); xPos = 540 * mMinSize; yPos = 420*mMinSize; canvas.drawText("平均125次/天", xPos, yPos, mTextPaint); // 4. draw dash line xPos = 30 * mMinSize; yPos = 440 * mMinSize; mLinePaint.setStrokeWidth(2*mMinSize); canvas.drawLine(xPos, yPos, mWidth - xPos, yPos,mLinePaint); // 5. draw bars and date mBarPaint.setStrokeWidth(mStrokeWidth); float halfBarGap = 510 * mMinSize / 14; float maxLength = 440 * mMinSize; yPos = 480 * mMinSize; int maxBar = 0; for(int step : mSteps){ if(step > maxBar){ maxBar = step; } } float length; mTextPaint.setColor(Color.WHITE); mTextPaint.setTextSize(18*mMinSize); mTextPaint.setTextAlign(Paint.Align.CENTER); for(int i = 0; i < mSteps.length; i++){ xPos = (2*i+1)* halfBarGap + 30 *mMinSize; length = (yPos - maxLength) * mSteps[i]*1f/maxBar; canvas.drawLine(xPos, yPos, xPos, yPos -length, mBarPaint ); //画出柱状图下面的日期 String date = String.format("%02d日", days[i]); canvas.drawText(date,xPos, 520*mMinSize, mTextPaint ); } // 6.draw text below mTextPaint.setTextAlign(Paint.Align.LEFT); mTextPaint.setColor(Color.WHITE); mTextPaint.setTextSize(23 * mMinSize); canvas.drawText("这是被隐藏的内容", 30 * mMinSize, 610 * mMinSize, mTextPaint); mTextPaint.setTextAlign(Paint.Align.RIGHT); mTextPaint.setColor(0xFF63CFEC); canvas.drawText("查看 >", 540 * mMinSize, 610 * mMinSize, mTextPaint); } private void drawUpRoundRect(float left, float top, float right, float bottom, float radius, Paint paint, Canvas canvas) { Path path = new Path(); path.moveTo(left, top); path.lineTo(right-radius, top); path.quadTo(right, top, right, top + radius); path.lineTo(right, bottom); path.lineTo(left, bottom); path.lineTo(left, top + radius); path.quadTo(left, top, left + radius, top); canvas.drawPath(path, paint); } private void drawBelowRoundRect(float left, float top, float right, float bottom, float radius, Paint paint, Canvas canvas) { Path path = new Path(); path.moveTo(left, top); path.lineTo(right, top); path.lineTo(right, bottom-radius); path.quadTo(right, bottom,right-radius,bottom); path.lineTo(left + radius, bottom); path.quadTo(left,bottom,left,bottom-radius); path.lineTo(left, top); canvas.drawPath(path, paint); } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { int desiredWidth = Integer.MAX_VALUE; int widthMode = MeasureSpec.getMode(widthMeasureSpec); int widthSize = MeasureSpec.getSize(widthMeasureSpec); int heightMode = MeasureSpec.getMode(heightMeasureSpec); int heightSize = MeasureSpec.getSize(heightMeasureSpec); int width; int height; //Measure Width if (widthMode == MeasureSpec.EXACTLY) { //Must be this size width = widthSize; } else if (widthMode == MeasureSpec.AT_MOST) { width = Math.min(desiredWidth, widthSize); } else { //Be whatever you want width = desiredWidth; } mMinSize = width/570.f; int desiredHeight = (int) (mMinSize*650); initSize(); //Measure Height= if (heightMode == MeasureSpec.EXACTLY) { //Must be this size height = heightSize; } else if (heightMode == View.MeasureSpec.AT_MOST) { //Can't be bigger than... height = Math.min(desiredHeight, heightSize); } else { //Be whatever you want height = desiredHeight; } //MUST CALL THIS setMeasuredDimension(width, height); } }可是传递过来的数据在onDraw里面不生效，只在countPerDay里面生效(就是在countPerDay里面打log，数值都是正常的。但是在onDraw里面打log就全部都为0)
这是为何，本人初学小白，请大神们指教。
解决方案
onDraw的代码呢？
解决方案二：
传递自定义什么嘛vv
时间： 2024-12-28 05:57:17