大佬教程收集整理的这篇文章主要介绍了Android中制作进度框和环形进度条的简单实例分享,大佬教程大佬觉得挺不错的,现在分享给大家,也给大家做个参考。
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,@R_197_6633@ } public ObliqueProgressbar(Context context,AttributeSet attrs) { this(context,attrs,0); } public ObliqueProgressbar(Context context,AttributeSet attrs,int defStyleAttr) { super(context,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,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,@R_197_6633@ } public CircleProgressbar(Context context,AttributeSet attrs) { this(context,0); } public CircleProgressbar(Context context,int defStyleAttr) { super(context,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,w,h); paint.setColor(Color.argb(0x11,0xcc,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,Color.RED,Color.GREEN,Shader.TileMode.CLAMp)); circleCanvas.drawCircle(w / 2,h / 2,radius - strokeWidth / 2,paint); paint.setShader(@R_197_6633@ /* 外圆 */ paint.setColor(mBarColor); paint.setStyle(Paint.Style.stroke); circleCanvas.drawCircle(w / 2,radius,paint); /* 圆弧 */ paint.setShader(new LinearGradient(0,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(@R_197_6633@ /* 文本 */ paint.setColor(mTextColor); if (mTextSize == 0) { calcTextSize(paint,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,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(); } }
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