<?xml version="1.0" encoding="utf-8"?> <resources><declare-styleable name="CustomTitleView"> <attr name="mSpeed" format="integer" /> <attr name="mFirstColor" format="color" /> <attr name="mSecondColor" format="color" /> <attr name="mCircleWidth" format="dimension"/> <attr name="textSize" format="dimension"/></declare-styleable> </resources>2、在View的构造方法中获得我们自定义的属性
/*** 当前进度*/private int mProgress;/*** 第一圈的颜色*/private int mFirstColor;/*** 第二圈的颜色*/private int mSecondColor;/*** 圈的宽度*/private int mCircleWidth;/*** 速度*/private int mSpeed;/*** 中间进度百分比的字符串的字体*/private float textSize;private boolean isNext = false;private Paint mPaint; public CustomTitleView(Context context, AttributeSet attrs) { super(context, attrs); TypedArray typearray = context.obtainStyledAttributes(attrs, R.styleable.CustomTitleView); int count= typearray.getIndexCount(); for(int i=0;i<count;i++){int attr =typearray.getIndex(i);switch(attr){ case R.styleable.CustomTitleView_mFirstColor:mFirstColor=typearray.getColor(attr,Color.BLACK);break; case R.styleable.CustomTitleView_mSecondColor:mSecondColor=typearray.getColor(attr,Color.RED);break; case R.styleable.CustomTitleView_mCircleWidth:mCircleWidth = typearray.getDimensionPixelSize(attr,(int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_PX,20,getResources().getDisplayMetrics()));break;case R.styleable.CustomTitleView_textSize:textSize = typearray.getDimensionPixelSize(attr,(int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_PX,30,getResources().getDisplayMetrics()));break; case R.styleable.CustomTitleView_mSpeed:mSpeed = typearray.getInt(attr,100);// 默认100break;} } Log.v("----",mSpeed+""); typearray.recycle(); mPaint = new Paint(); new Thread() {public void run(){ while (true) {mProgress++;if (mProgress == 360){ mProgress = 0; if (!isNext)isNext = true; elseisNext = false;}postInvalidate();try{ Thread.sleep(mSpeed);} catch (InterruptedException e){ e.printStackTrace();} }}; }.start();}3、直接重写onDraw,这不需要重写onMeasure
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec){ super.onMeasure(widthMeasureSpec, heightMeasureSpec);}protected void onDraw(Canvas canvas){ /** * 画进度百分比 */ mPaint.setStrokeWidth(0); mPaint.setColor(Color.BLACK); mPaint.setTextSize(textSize); mPaint.setTypeface(Typeface.DEFAULT_BOLD); //设置字体 int percent = (int)(((float)mProgress / (float)360) * 100); int centre = getWidth() / 2; // 获取圆心的x坐标 int radius = centre - mCircleWidth / 2;// 半径 float textWidth = mPaint.measureText(percent + "%"); //测量字体宽度,我们需要根据字体的宽度设置在圆环中间 canvas.drawText(percent + "%",centre-textWidth/ 2,centre+textSize/2, mPaint); //画出进度百分比 mPaint.setStrokeWidth(mCircleWidth); // 设置圆环的宽度 mPaint.setAntiAlias(true); // 消除锯齿 mPaint.setStyle(Paint.Style.STROKE); // 设置空心 RectF oval = new RectF(centre - radius, centre - radius, centre + radius, centre + radius); // 用于定义的圆弧的形状和大小的界限 if(isNext){mPaint.setColor(mSecondColor); // 设置圆环的颜色canvas.drawCircle(centre, centre, radius, mPaint); // 画出圆环mPaint.setColor(mFirstColor); // 设置圆环的颜色canvas.drawArc(oval, -90, mProgress, false, mPaint); // 根据进度画圆弧 }else{mPaint.setColor(mFirstColor); // 设置圆环的颜色canvas.drawCircle(centre, centre, radius, mPaint); // 画出圆环mPaint.setColor(mSecondColor); // 设置圆环的颜色canvas.drawArc(oval, -90, mProgress, false, mPaint); // 根据进度画圆弧 }}activity_main.xml
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:custom="http://schemas.android.com/apk/res-auto"android:layout_width="match_parent"android:layout_height="match_parent"android:padding="20dp"><view.CustomTitleView android:layout_width="200dp" android:layout_height="400dp" custom:mSpeed="50" custom:mFirstColor="#7300e6" custom:mSecondColor="#39ac39" custom:mCircleWidth="10px" custom:textSize="20px" android:id="@+id/one"/><view.CustomTitleView android:layout_toEndOf="@id/one" android:layout_width="200dp" android:layout_height="400dp" custom:mSpeed="100" custom:mFirstColor="#0040ff" custom:mSecondColor="#40ff00" custom:mCircleWidth="20px" custom:textSize="30px" /> </RelativeLayout>效果预览
源码下载:http://xiazai.jb51.net/201701/yuanma/AndroidProgressbar(jb51.net).rar
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。