Android中如何使用progressbar实现带底部指示器和文字进度条

本篇内容主要讲解"Android中如何使用progressbar实现带底部指示器和文字进度条"，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让小编来带大家学习"Android中如何使用progressbar实现带底部指示器和文字进度条"吧!

列出源码：

public class TextProgressBar extends LinearLayout {  String text; Paint mPaint; private Rect textRect; private Bitmap bitmap; private ProgressBar progressBar; int progress; int proWidth, proHeight;  public TextProgressBar(Context context, AttributeSet attrs, int defStyleAttr) {  super(context, attrs, defStyleAttr);  initText(context); }  public TextProgressBar(Context context) {  super(context);  initText(context); }  public TextProgressBar(Context context, AttributeSet attrs) {  super(context, attrs);  initText(context); }  @Override protected synchronized void onDraw(Canvas canvas) {  super.onDraw(canvas);  progress = progressBar.getProgress();  if (progress == 0 || progress == progressBar.getMax())   return;  this.mPaint.getTextBounds(this.text, 0, this.text.length(), textRect);   proWidth = progressBar.getWidth();  proHeight = progressBar.getHeight();   //画指示器  int bitmapx = (int) (progressBar.getLeft() + proWidth * ((progress * 1f) / progressBar.getMax())) - bitmap.getWidth() / 2;  int bitmapy = proHeight + bitmap.getHeight() / 2;  if (bitmapx < 0)   bitmapx = progressBar.getLeft();  if(bitmapx > progressBar.getRight()-bitmap.getWidth())   bitmapx = progressBar.getRight()-bitmap.getWidth();  canvas.drawBitmap(bitmap, bitmapx, bitmapy, mPaint);   //写字  int tvx = (int) (progressBar.getLeft() + proWidth * ((progress * 1f) / progressBar.getMax())) - textRect.centerX();  int tvy = proHeight + bitmap.getHeight() * 2 + 4;  if (tvx < 0)   tvx = progressBar.getLeft();  if(tvx >= progressBar.getRight()-textRect.width())   tvx = progressBar.getRight()-textRect.width();  canvas.drawText(this.text, tvx, tvy + bitmap.getHeight(), this.mPaint);  }  //初始化，画笔 private void initText(Context context) {  View inflate = View.inflate(context, R.layout.textprogressbar, this);  progressBar = (ProgressBar) inflate.findViewById(R.id.progressbar1);  progressBar.setProgress(50);  setWillNotDraw(false);  this.mPaint = new Paint();  this.mPaint.setColor(getResources().getColor(R.color.red));  this.mPaint.setTextSize(20);  textRect = new Rect();  text = "0";  bitmap = BitmapFactory.decodeResource(context.getResources(), R.mipmap.progress_top); }  public void setProgress(int progress) {  progressBar.setProgress(progress); }   public void setText(String str) {  text = str; }}

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