- 浏览: 128791 次
- 性别:
- 来自: 成都
最新评论
-
yi_chao_jiang:
你好,多谢分享,问个问题,在上传数据的时候判断文件是否有上传记 ...
断点续传和下载原理分析 -
a41606709:
为什么我的tabhost显示不出来? 怎么设置在全部页面中让他 ...
TabActivity中的Tab标签详细设置 -
Zero颴:
大神篇,思路,配图都很清晰,perfect!
Android事件模型之interceptTouchEvnet ,onTouchEvent关系正解 -
QAZ503602501:
牛死人了!!!
B-树 -
mengsina:
很牛的文档。数学功底好啊
Android Matrix理论与应用详解
最近由于需要,做了一个音乐播放控制view,在上面需要能
*控制播放
*显示剩余时间
*显示进度(整个view就是一个进度条)
*实现播放暂停,以及ProgressBar的第一二进度功能
开始想到用组合的方式实现,然后重写ProgressBar的方式实现,但是发现很困难而且文字显示也不行
最后只有自己动手写一个新的控制条
主要的原理就是绘制视图的时候控制onDraw,然后在上面画图片和文字
然后在进度变化的时候不断重绘View就可以了
先上图:
其主要的View部分:
package com.hao; import android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.PixelFormat; import android.graphics.Rect; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; import android.util.AttributeSet; import android.util.Log; import android.view.MotionEvent; import android.view.View; import android.view.View.MeasureSpec; import android.view.View.OnClickListener; import android.widget.ImageButton; import android.widget.ImageView; import android.widget.TextView; public class ProgressButton extends View{ private Bitmap begin , bm_gray, bm_yellow, bm_second, end_gray, end_yellow, line,begin_gray; private Bitmap pausePressedImg; private Bitmap playPressedImg; private int bitmapWidth = 0 , bitmapHeight = 0, btWidth = 0, btHeight = 0; private int progress = 0, secondProgress = 0; private double perLen = 0, max = 0, maxSize = 0; private OnProgressChanged mOnProgressChanged; private boolean isPlaying = false; private Paint mTextPaint; private String time = "00:00"; private int color = Color.BLUE; public ProgressButton(Context context) { super(context); // TODO Auto-generated constructor stub init(); } public ProgressButton(Context context, AttributeSet attrs, int defStyle){ super(context, attrs, defStyle); init(); } public ProgressButton(Context context, AttributeSet attrs){ super(context, attrs); init(); } private void init(){ begin = drawableToBitmap(getResources().getDrawable(R.drawable.rectangle_left_yellow)); begin_gray = drawableToBitmap(getResources().getDrawable(R.drawable.rectangle_left_gray)); bm_gray = drawableToBitmap(getResources().getDrawable(R.drawable.rectangle_gray)); bm_yellow = drawableToBitmap(getResources().getDrawable(R.drawable.rectangle_yellow)); bm_second = drawableToBitmap(getResources().getDrawable(R.drawable.rectangle_second_yellow)); end_gray = drawableToBitmap(getResources().getDrawable( R.drawable.rectangle_right_gray)); end_yellow = drawableToBitmap(getResources().getDrawable(R.drawable.rectangle_right_yellow)); line = drawableToBitmap(getResources().getDrawable(R.drawable.rectangle_line)); pausePressedImg = BitmapFactory.decodeResource(getResources(), R.drawable.pause_button_pressed); playPressedImg = BitmapFactory.decodeResource(getResources(), R.drawable.play_button_pressed); bitmapHeight = begin.getHeight(); bitmapWidth = begin.getWidth(); btWidth = pausePressedImg.getWidth(); btHeight = pausePressedImg.getHeight(); mTextPaint = new Paint(); mTextPaint.setAntiAlias(true); mTextPaint.setTextSize(14); mTextPaint.setColor(color); setPadding(3, 3, 3, 3); } public static Bitmap drawableToBitmap(Drawable drawable) { int width = drawable.getIntrinsicWidth(); int height = drawable.getIntrinsicHeight(); Bitmap bitmap = Bitmap.createBitmap(width, height, drawable .getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565); Canvas canvas = new Canvas(bitmap); drawable.setBounds(0, 0, width, height); drawable.draw(canvas); return bitmap; } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { // TODO Auto-generated method stub Log.e("*******", "onMeasure"); setMeasuredDimension(measureWidth(widthMeasureSpec), measureHeight(heightMeasureSpec)); perLen = maxSize/max; } @Override protected void onDraw(Canvas canvas) { // TODO Auto-generated method stub Log.e("*******", "onDraw"); int middle1 = (int) (progress*perLen), middle2 = (int) (secondProgress*perLen) ,end = (int) maxSize-4; if(progress == 0 && secondProgress == 0){ //draw background canvas.drawBitmap(begin_gray, new Rect(0,0,bitmapWidth,bitmapHeight), new Rect(0, 0, bitmapWidth, bitmapHeight), null); canvas.drawBitmap(bm_gray, new Rect(0,0,end-middle1,bitmapHeight), new Rect(bitmapWidth, 0, end, bitmapHeight), null); canvas.drawBitmap(end_gray, new Rect(0,0,4,bitmapHeight), new Rect(end, 0, end+4, bitmapHeight), null); //draw button and line canvas.drawBitmap(playPressedImg, new Rect(0, 0, btWidth, btHeight), new Rect(0, 0, btWidth, bitmapHeight), null); canvas.drawBitmap(line, new Rect(0, 0, 2, bitmapHeight), new Rect(btWidth, 0, btWidth+2, bitmapHeight), null); //draw time and line if(time.length() == 5){ canvas.drawBitmap(line, new Rect(0, 0, 2, bitmapHeight), new Rect(end - 50, 0, end-48, bitmapHeight), null); canvas.drawText("-"+time, end-45, bitmapHeight/2+5, mTextPaint); }else{ canvas.drawBitmap(line, new Rect(0, 0, 2, bitmapHeight), new Rect(end - 60, 0, end-58, bitmapHeight), null); canvas.drawText("-"+time, end-55, bitmapHeight/2+5, mTextPaint); } }else{ //begin canvas.drawBitmap(begin, new Rect(0,0,bitmapWidth,bitmapHeight), new Rect(0, 0, bitmapWidth, bitmapHeight), null); canvas.drawBitmap(bm_yellow, new Rect(0,0,middle1-bitmapWidth,bitmapHeight), new Rect(bitmapWidth, 0, middle1, bitmapHeight), null); //middle if(secondProgress != 0 && secondProgress > progress){ canvas.drawBitmap(bm_second, new Rect(0,0,bitmapWidth,bitmapHeight), new Rect(middle1, 0, middle2, bitmapHeight), null); canvas.drawBitmap(bm_gray, new Rect(0,0,bitmapWidth,bitmapHeight), new Rect(middle2, 0, end, bitmapHeight), null); }else{ canvas.drawBitmap(bm_gray, new Rect(0,0,end-middle1,bitmapHeight), new Rect(middle1, 0, end, bitmapHeight), null); } //end canvas.drawBitmap(end_gray, new Rect(0,0,4,bitmapHeight), new Rect(end, 0, end+4, bitmapHeight), null); if(middle2 >= end || middle1 >= end){ canvas.drawBitmap(end_yellow, new Rect(0,0,4,bitmapHeight), new Rect(end, 0, end+4, bitmapHeight), null); } //draw button if(!isPlaying) { canvas.drawBitmap(playPressedImg, new Rect(0, 0, btWidth, btHeight), new Rect(0, 0, btWidth, bitmapHeight), null); }else{ canvas.drawBitmap(pausePressedImg, new Rect(0, 0, btWidth, btHeight), new Rect(0, 0, btWidth, bitmapHeight), null); } //draw line and time canvas.drawBitmap(line, new Rect(0, 0, 2, bitmapHeight), new Rect(btWidth, 0, btWidth+2, bitmapHeight), null); if(time.length() == 5){ canvas.drawBitmap(line, new Rect(0, 0, 2, bitmapHeight), new Rect(end - 50, 0, end-48, bitmapHeight), null); canvas.drawText("-"+time, end-45, bitmapHeight/2+5, mTextPaint); }else{ canvas.drawBitmap(line, new Rect(0, 0, 2, bitmapHeight), new Rect(end - 60, 0, end-58, bitmapHeight), null); canvas.drawText("-"+time, end-55, bitmapHeight/2+5, mTextPaint); } } super.onDraw(canvas); } @Override public boolean onTouchEvent(MotionEvent event) { // TODO Auto-generated method stub //在这里因为要换按钮,故而需要更新整个视图 if(event.getAction() == MotionEvent.ACTION_DOWN){ onClickListener.onClick(this); invalidate(); } return true; } /** * 这个方法必须设置,当播放的时候 * @param isPlaying */ public void setStateChanged(boolean isPlaying){ this.isPlaying = isPlaying; } public void setTextColor(int color){ this.color = color; invalidate(); } /** * Determines the width of this view * @param measureSpec A measureSpec packed into an int * @return The width of the view, honoring constraints from measureSpec */ private int measureWidth(int measureSpec) { int result = 0; int specMode = MeasureSpec.getMode(measureSpec); int specSize = MeasureSpec.getSize(measureSpec); if (specMode == MeasureSpec.EXACTLY) { // We were told how big to be result = specSize; } else { result = (int) ((int)max*perLen + getPaddingLeft() + getPaddingRight()); if (specMode == MeasureSpec.AT_MOST) { // Respect AT_MOST value if that was what is called for by measureSpec result = Math.min(result, specSize); } } System.out.println("width:"+result); maxSize = result; return result; } /** * Determines the height of this view * @param measureSpec A measureSpec packed into an int * @return The height of the view, honoring constraints from measureSpec */ private int measureHeight(int measureSpec) { int result = 0; int specMode = MeasureSpec.getMode(measureSpec); int specSize = MeasureSpec.getSize(measureSpec); if (specMode == MeasureSpec.EXACTLY) { // We were told how big to be result = specSize; } else { // Measure the text (beware: ascent is a negative number) result = (int) getPaddingTop() + getPaddingBottom() + bitmapHeight; if (specMode == MeasureSpec.AT_MOST) { // Respect AT_MOST value if that was what is called for by measureSpec result = Math.min(result, specSize); } } System.out.println("Height:"+result); return result; } /** * set the time * @param currentTime 当前播放时间 * @param totalTime 总播放时间 */ public void setTime(int currentTime, int totalTime){ int time = totalTime - currentTime; if(time <= 1000){ this.time="00:00"; return; } time/=1000; int minute = time/60; int hour = minute/60; int second = time%60; minute %= 60; if(hour == 0){ this.time = String.format("%02d:%02d", minute,second); }else{ this.time = String.format("%02d:%02d:%02d", hour, minute,second); } } /** * * @param viewWidth 组件的宽度 */ public void setMax(int max){ this.max = max; } public int getMax(){ return (int)max; } /** * 设置第一进度 * @param progress */ public void setProgress(int progress){ if(progress>max){ progress = (int) max; } else if(progress<0){ progress = 0; } if(mOnProgressChanged!=null){ mOnProgressChanged.onProgressUpdated(); } this.progress = progress; invalidate(); } /** * 设置第二进度 * @param secondProgress */ public void setSecondProgress(int secondProgress){ if(secondProgress>max){ secondProgress = (int) max; } else if(secondProgress<0){ secondProgress = 0; } if(mOnProgressChanged!=null){ mOnProgressChanged.onSecondProgressUpdated(); } this.secondProgress = secondProgress; invalidate(); } /** * 设置进度监听器 * @param mOnProgressChanged */ public void setmOnProgressChanged(OnProgressChanged mOnProgressChanged) { this.mOnProgressChanged = mOnProgressChanged; } public interface OnProgressChanged{ void onProgressUpdated(); void onSecondProgressUpdated(); } @Override public void setOnClickListener(OnClickListener l) { // TODO Auto-generated method stub if(l != null) onClickListener = l; super.setOnClickListener(l); } private View.OnClickListener onClickListener; }
控制非常简单,在这里设置了第一和二进度:
package com.hao; import java.util.Timer; import java.util.TimerTask; import com.hao.ProgressView.OnProgressChanged; import android.app.Activity; import android.graphics.drawable.Drawable; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.view.Gravity; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup.LayoutParams; import android.widget.ImageButton; import android.widget.LinearLayout; import android.widget.SeekBar; import android.widget.SeekBar.OnSeekBarChangeListener; public class SeekBarTestActivity extends Activity { ProgressButton bp; int time = 60000 , currentTime = 0; boolean flag = true; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.my_progress_bar); bp = (ProgressButton) findViewById(R.id.pbt); bp.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub System.out.println("main onck"); bp.setStateChanged(flag); flag = !flag; } }); bp.setMax(60000); Timer timer = new Timer(); timer.schedule(new TimerTask() { @Override public void run() { // TODO Auto-generated method stub handler.sendEmptyMessage(0); } }, 0, 2000); } Handler handler = new Handler(){ @Override public void handleMessage(Message msg) { // TODO Auto-generated method stub currentTime +=1000; bp.setProgress(currentTime); bp.setSecondProgress(currentTime+1000); bp.setTime(currentTime, time); } }; }
布局文件:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_height="fill_parent" android:layout_width="fill_parent" android:orientation="vertical"> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="音乐播放"/> <LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:paddingTop="5dip" android:gravity="center_horizontal"> <com.hao.ProgressButton android:id="@+id/pb1" android:layout_width="300dp" android:layout_height="45dp" android:background="@drawable/button_left_gray_background"/> </LinearLayout> </LinearLayout>
我用到的进度图片都是通过xml定义的在附件中
发表评论
-
手机游戏的优化
2012-05-14 15:46 1034手机游戏设计中由于设备性能限制,可能出现资源不足的情况 ... -
断点续传和下载原理分析
2011-12-07 15:22 14602最近做一个文件上传和下载的应用对文件上传和下载进行了一个完整的 ... -
Android Matrix理论与应用详解
2011-11-21 10:58 17562本文转自http://blog.csdn.net/kuku20 ... -
Android图片处理(Matrix,ColorMatrix)
2011-11-20 22:47 3218在编程中有时候需要对图片做特殊的处理,比如将图片做出黑 ... -
Android事件模型之interceptTouchEvnet ,onTouchEvent关系正解
2011-11-19 20:53 7182参考文档: http://blog.cs ... -
Android下基于XML的 Graphics(转载)
2011-04-23 15:39 1268Android下基于XML的 Graphi ... -
Android之父深入解析Android
2011-04-22 16:10 1008Android之父深入解析Android By: 海 ... -
实现ListView的条目下自动隐藏显示Button的方法
2011-04-17 09:42 6570这个想法是我在看了sina ... -
TabActivity中的Tab标签详细设置
2011-03-24 17:19 7211参考链接: http://www.iteye.com/ ...
相关推荐
自己写的一个音频播放器demo(带seekbar和显示时间),在Config类中更换成自己的音频url
简介:特点: 1.动态计算歌曲时间 2.拖放中动态显示进度 3.当前歌曲播放完前进行提示 4.随机和有序播放歌曲 5.歌曲列表中点击播放 6.输入曲号指定歌曲播放 ==========
抛弃传统flash播放器要下载后才能看,绝不浪费硬盘空间,拒绝等待时间,一点即看。想看什么就有什么 动态搜索 内嵌智能flash资源搜索,只要您能想到的关键词只需要在右下角输入既可搜索到您想要的资源进行观看。 ...
非常不错的Flex播放器,利用microphone制作,不用经过服务器。
整个播放器分三个模块,主播放窗体、播放列表和歌词播放。只支持wma、mp3的固定音频(CBR)和可变音频(VBR)媒体格式播放。除均衡器和波形显示以外,其他功能都基本达到商业播放器标准的各项指标。Start2005的各项功能...
自定义播放器进度条,当前进度正上方显示时间,解决进度跟上方内容偏差问题。
时间 大小 类型等属性读取并显示、左右声道控制、音量加减、静音功能、音量滑条、播放模式选择、位图按钮、按钮提示、独立播放进度条、播放进度滑条、关于对话框。Windows media player、wmp、VC、play、pause、stop...
此代码是基于H5+CSS+JS实现的视频播放器,能够调节音量,调节播放进度,全屏播放三大功能,同时如何计算视频时间
12. 显示视频总时长和当前播放进度的位置时间; 13. 支持音量控制; 14. 支持列表连播参数getNext,调用时直接在html中添加js的getNext函数即可; 15. 可以与动易、织梦、帝国等各类CMS系统结合,实现与此类CMS系统...
一:修复Bug 1:修复了多段视频播放时间出错的bug,修复了在有些情况下进度栏拖动时乱跳的bug 2:修复了控进度栏限制向前拖动,向后拖动时间不准确的bug 3:修复了lv=1时,全屏切换时进度栏按钮位置的bug 4:...
这个播放器是基于 Windows API 制作的 音乐播放器, 有音量控制 播放进度, 播放时间, 暂停, 恢复, 打开选择音频文件, 播放进度可以拖动快进快退, 界面截好图了,但是好像CSDN没有上传资源图片的, 界面就是 ...
这是实现了播放器的绝大多数功能,例如:添加歌曲,保存列表,删除歌曲,删除重复,歌曲根据不同的关键字排序,播放模式的选择,调节音量,进度,显示歌曲进度时间和剩余时间,保存上次播放配置...
媒体播放器主要实现了显示媒体文件的播放进度、播放时间等,并控制播放进度、音量大小、以及调用字幕叠加、视频设置等子窗口
10、强化了视频地址调用方式中的xml调用方式,经过强化过的xml方式,可以只列出多段视频地址,播放器自动读取时间和字节,也可以在xml文件里配置好每段视频的时间(秒数)和字节数,播放器将不再进行预加载,而是...
Android:简单实现音乐播放器,实现歌曲的列表显示,播放和暂停,切歌,显示时间,播放进度等功能。
android播放器 private MediaPlayer mediaPlayer; private ListView mListView; private SlidingDrawer slidingDrawer ; // 定义SlidingDrawer private ImageView handle; //歌曲数据库 Cursor cur; // ...
本音乐播放器是由mfc制作而成,利用了vc自带的mci媒体播放API制作而成,界面美观,功能包括:音乐的播放、暂停、上一首、下一首等,音量的控制、音乐的切换、音乐进度的拖动控制,音乐播放进度显示(通过进度条和...
一个用vs结合opencv制作的mfc程序视频播放器,可以实现暂停功能,而且对视频的格式无限制。还欠缺的是没有显示视频的播放进度和时间。
显示视频总时长和当前播放进度的位置时间; 4.支持xml,asp,php,aspx,jsp程序列表; 5.支持列表自动连播; 6.支持歌曲名称滚动显示; 7.支持ASP,PHP,.NET等程序,可以实现后台管理视频的功能; 8.可以...