进度框
import android.content.Context; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.util.AttributeSet; import android.view.View; import java.util.Random; public class ObliqueProgressbar extends View { private Paint mPaint; private float mProgress; public ObliqueProgressbar(Context context) { this(context, null); } public ObliqueProgressbar(Context context, AttributeSet attrs) { this(context, attrs, 0); } public ObliqueProgressbar(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); mPaint = new Paint(); mPaint.setAntiAlias(true); } @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); if (mProgress == 0) return; //碎片雨 mPaint.setColor(Color.parseColor("#a96ecb")); mPaint.setStrokeWidth(3); Random random = new Random(); int sx, sy; for (int i = 0; i < 200; i++) { sx = random.nextInt(getWidth() + 10); sy = random.nextInt(getHeight() + 10); // canvas.drawLine(sx, sy, sx+random.nextInt(5), sy+random.nextInt(5), mPaint); canvas.drawCircle(sx, sy, random.nextInt(5) + 1, mPaint); } //进度 mPaint.setColor(Color.parseColor("#6AFFFFFF")); mPaint.setStrokeWidth(15); float x = mProgress * getWidth(); for (int i = 0; i < x; i += 30) { canvas.drawLine(i - 30, -10, i + 30, getHeight() + 10, mPaint); } } public void setProgress(float progress) { this.mProgress = progress; invalidate(); } }
环形进度条
先来看一下效果：
下面直接上代码了：
ckage com.stone.circleprogressbar.view; import android.content.Context; import android.content.res.TypedArray; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.LinearGradient; import android.graphics.Paint; import android.graphics.RectF; import android.graphics.Shader; import android.util.AttributeSet; import android.view.View; import com.stone.circleprogressbar.R; public class CircleProgressbar extends View { private float mProgress; private int mBarColor; private int mTextColor; private float mTextSize; public CircleProgressbar(Context context) { this(context, null); } public CircleProgressbar(Context context, AttributeSet attrs) { this(context, attrs, 0); } public CircleProgressbar(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); TypedArray array = context.obtainStyledAttributes(attrs, R.styleable.CircleProgressbar); mBarColor = array.getColor(R.styleable.CircleProgressbar_barColor, Color.GRAY); mTextColor = array.getColor(R.styleable.CircleProgressbar_textColor, Color.GRAY); mProgress = array.getFloat(R.styleable.CircleProgressbar_progress, 0); } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { super.onMeasure(widthMeasureSpec, heightMeasureSpec); } public void setProgress(float count) { mProgress = count; invalidate(); } @Override protected void onDraw(Canvas canvas) { int w = getWidth(); int h = getHeight(); int strokeWidth = 20; int radius = w / 2 - strokeWidth / 2;//大圆 半径 Bitmap barBitmap = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); Paint paint = new Paint(); paint.setAntiAlias(true); //抗锯齿 paint.setStrokeWidth(strokeWidth); //描边宽 paint.setDither(true); //防抖动 /* 外边框 */ Canvas circleCanvas = new Canvas(barBitmap); RectF rect = new RectF(0, 0, w, h); paint.setColor(Color.argb(0x11, 0xcc, 0xcc, 0xcc)); // circleCanvas.drawRect(rect, paint); //没啥用 只是看外边框的 /* 内圆 */ paint.setColor(Color.CYAN); paint.setShader(new LinearGradient(0, 0, w, h, Color.RED, Color.GREEN, Shader.TileMode.CLAMP)); circleCanvas.drawCircle(w / 2, h / 2, radius - strokeWidth / 2, paint); paint.setShader(null); /* 外圆 */ paint.setColor(mBarColor); paint.setStyle(Paint.Style.STROKE); circleCanvas.drawCircle(w / 2, h / 2, radius, paint); /* 圆弧 */ paint.setShader(new LinearGradient(0, 0, w, h, new int[]{Color.GREEN, Color.MAGENTA, Color.CYAN, Color.RED}, new float[]{0.2f, 0.5f, 0.7f, 1.0f}, Shader.TileMode.CLAMP)); float cur = mProgress * 360 * 0.01f; circleCanvas.drawArc(new RectF(strokeWidth / 2, strokeWidth / 2, w - strokeWidth / 2, h - strokeWidth / 2), 360 - 45, cur, false, paint); paint.setShader(null); /* 文本 */ paint.setColor(mTextColor); if (mTextSize == 0) { calcTextSize(paint, w, strokeWidth); } else { paint.setTextSize(mTextSize); } paint.setTextAlign(Paint.Align.LEFT);//default String percent = mProgress + "%"; paint.setStyle(Paint.Style.FILL); circleCanvas.drawText(percent, w / 2 - paint.measureText(percent) / 2, h / 2 + paint.getTextSize() / 2, paint); canvas.drawBitmap(barBitmap, 0, 0, paint); } /** * 计算并设置最适合的textSize * * @param paint * @param max 最大宽度 * @param offset 偏移 */ private void calcTextSize(Paint paint, int max, int offset) { float width = paint.measureText("99.99%"); while (width < max * 3 / 5) { paint.setTextSize(paint.getTextSize() + 5); width = paint.measureText("92.88%") + offset / 2; } mTextSize = paint.getTextSize(); } }
设置进度刷新显示 调用 setProgress()即可。
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