Android custom learning (5) custom Progressbar

Android custom learning (5) custom Progressbar

The last phase of custom View learning is now available.

I believe everyone has their own implementation methods. Here I will post my methods for reference.

/* Scale Paint brush */private Paint linePaint;/* progress Paint */private Paint textPaint;/* progress */private int index = 0; /*** scale */private int ruling = 0;

private void init() {linePaint = new Paint();linePaint.setColor(Color.BLACK);linePaint.setStrokeWidth(5);linePaint.setAntiAlias(true);linePaint.setStyle(Style.FILL);textPaint = new Paint(linePaint);textPaint.setTextSize(70);textPaint.setColor(Color.WHITE);handler.sendEmptyMessage(0);handler.sendEmptyMessageDelayed(1, 2000);}

I believe everyone can understand the above .. Next is the most critical onDraw ()

@ Overrideprotected void onDraw (Canvas canvas) {super. onDraw (canvas); // move the canvas. translate (getWidth ()/2, getHeight ()/2); // fill in the background canvas. drawColor (getResources (). getColor (R. color. gray); // The total number of scales int count = 30; // The percentage of progress words in the Rect rect = new Rect (); String indexsString = String. valueOf (index); if (index <10) {indexsString = "0" + indexsString;} textPaint. getTextBounds (indexsString, 0, indexsString. length (), rect); // progress font canvas. drawText (indexsString,-rect. width ()/2, rect. height ()/2, textPaint); // rotate the canvas, draw the scale, and change the color according to the ruling value (int I = 0; I <count; I ++) {if (I <= ruling) {linePaint. setColor (getResources (). getColor (R. color. pink);} else {linePaint. setColor (Color. BLACK);} canvas. drawLine (0,100, 0,120, linePaint); canvas. rotate (360/count, 0, 0 );}}

You can leave a message if you are not familiar with the comments. Next, let's take a look at the effect.

After this is done, I believe that the second one is coming!

/* ** Ring */private Paint rectPaint;/* scale */private Paint linePaint;/* fill */private Paint fillPaint; /*** progress word */private Paint textPaint; private int index = 0; private int index2 = 0; public ProgressView2 (Context context) {this (context, null ); // TODO Auto-generated constructor stub} public ProgressView2 (Context context, AttributeSet attrs) {this (context, attrs, 0 ); // TODO Auto-generated constructor stub} public ProgressView2 (Context context, AttributeSet attrs, int defStyle) {super (context, attrs, defStyle); init ();}

private void init() {rectPaint = new Paint();rectPaint.setAntiAlias(true);rectPaint.setStrokeWidth(20);rectPaint.setStyle(Style.STROKE);rectPaint.setColor(getResources().getColor(R.color.dark));linePaint = new Paint(rectPaint);linePaint.setStrokeWidth(20);linePaint.setColor(getResources().getColor(R.color.pink));fillPaint = new Paint(linePaint);fillPaint.setStrokeWidth(1);fillPaint.setColor(Color.BLACK);fillPaint.setAlpha(60);textPaint = new Paint();textPaint.setStrokeWidth(5);textPaint.setAntiAlias(true);textPaint.setTextSize(70);textPaint.setColor(Color.WHITE);handler.sendEmptyMessage(0);handler.sendEmptyMessage(1);}

@ Overrideprotected void onDraw (Canvas canvas) {super. onDraw (canvas); // Number of scales int count = 60; // specifies the background color canvas. drawColor (getResources (). getColor (R. color. gray); // move the canvas. translate (getWidth ()/2, getHeight ()/2); // RectF rectF = new RectF (-100,-100,100,100); String indexString = String. valueOf (index); if (index <10) {indexString = "0" + indexString;} Rect rect = new Rect (); textPaint. getTextBounds (indexString, 0, indexString. length (), rect); canvas. drawText (indexString,-rect. width ()/2, rect. height ()/2, textPaint); // circle canvas. drawArc (rectF, 0,360, false, rectPaint); // fill color canvas. drawArc (rectF,-90, index, false, linePaint); for (int I = 0; I <index2; I ++) {canvas. drawLine (0,-90, 0,-110, fillPaint); canvas. rotate (360/count, 0, 0 );}}

Source code