Android 下载进度条， 自定义加载进度条，loading动画
16lz
2021-01-23
1、自定义loadingline动画
/** * 作者：created by meixi * 邮箱：[email protected] * 日期：2018/9/6 10 */public class LoadingLine extends View { private Paint paint; private Paint backPaint; private Paint textPaint; private boolean init = false; private ValueAnimator valueAnimator; private float param = 0; private int length = 0; public LoadingLine(Context context) { super(context); init(); } public LoadingLine(Context context, AttributeSet attrs) { super(context, attrs); init(); } private void init() { paint = new Paint(); paint.setColor(Color.BLUE); paint.setStrokeWidth(25); backPaint = new Paint(); backPaint.setColor(Color.RED); backPaint.setStrokeWidth(25); textPaint = new Paint(); textPaint.setColor(Color.WHITE); textPaint.setTextSize(10); } @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); if (!init) {// start(); init = true; } int width = getWidth(); int height = getHeight(); canvas.drawLine(0, height / 2, width, height / 2, backPaint); canvas.drawLine(0, height / 2, length * width / 100, height / 2, paint); if (length<100){ canvas.drawText(length + "", length * width / 100 - 22, height / 2 + 6, textPaint); }else { canvas.drawText(length + "", length * width / 100 - 42, height / 2 + 6, textPaint); }// if (valueAnimator.isRunning()) {// param = (float) valueAnimator.getAnimatedValue();// setLength((int) param);// } } /** * 也可在外部手动控制进度条,自行关闭valueAnimator * * @param param */ public void setLength(int param) { this.length = param; invalidate(); } private void start() { if (valueAnimator == null) { valueAnimator = ValueAnimator.ofFloat(0, 100); valueAnimator.setInterpolator(new LinearInterpolator()); valueAnimator.setDuration(6000); valueAnimator.start(); } else { valueAnimator.start(); } postDelayed(new Runnable() { @Override public void run() {// start(); invalidate(); } }, valueAnimator.getDuration()); invalidate(); }}
2、activity调用
布局文件
初始化
private boolean running; private LoadingLine loadingLine; int i = 0; static final int REFRESH_COMPLETE = 0X1112; private Handler mHandler = new Handler() { public void handleMessage(android.os.Message msg) { switch (msg.what) { case REFRESH_COMPLETE: if (i==100){ running=false; } Log.i("lgq","...===="+i); loadingLine.setLength(i++);//主要加载进度方法//todo... break; } } };线程加载进度
loadingLine =(LoadingLine)findViewById(R.id.myloadline);new Thread() { @Override public void run() { super.run(); running = true; while (running) { mHandler.sendEmptyMessageDelayed(REFRESH_COMPLETE, 0); try { sleep(100); } catch (InterruptedException e) { e.printStackTrace(); } } }}.start();添加圆弧框
<?xml version="1.0" encoding="utf-8"?>
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