代码不多,就懒得加注释了.原谅我的懒.

缩略图获取那块,没有加用线程.可能会在有些低端机上面或者高清的视频会出现FC的情况.需要的童鞋.自行添加.

附代码:

package com.tan.videoselectthumbnail;

import java.lang.ref.WeakReference;

import java.util.ArrayList;

import java.util.List;

import java.util.logging.Logger;

import com.tan.videoselectthumbnail.R;

import android.app.Activity;

import android.content.Context;

import android.graphics.Bitmap;

import android.media.MediaMetadataRetriever;

import android.net.Uri;

import android.os.Bundle;

import android.os.Environment;

import android.util.DisplayMetrics;

import android.util.Log;

import android.view.GestureDetector;

import android.view.Menu;

import android.view.MenuItem;

import android.view.MotionEvent;

import android.view.View;

import android.view.View.OnTouchListener;

import android.widget.ImageView;

import android.widget.LinearLayout;

import android.widget.LinearLayout.LayoutParams;

import android.widget.RelativeLayout;

public class MainActivity extends Activity {

private static LinearLayout linearLayout;

private static Context context;

private RelativeLayout rl_l;

private ImageView imageviewPreview,ivw_to2;

private GestureDetector mGestureDetector;

private RelativeLayout.LayoutParams lp;

private List bitmaps;

private int wWidth,iWidth,tWidth;

private int arrayWidth[];

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

linearLayout=(LinearLayout) findViewById(R.id.ll);

context=this;

rl_l=(RelativeLayout) findViewById(R.id.rl_l);

imageviewPreview=(ImageView) findViewById(R.id.ivw_to);

ivw_to2=(ImageView) findViewById(R.id.ivw_to2);

Uri uri=Uri.parse("android.resource://" + getPackageName() + "/" +R.raw.test);

bitmaps=new ArrayList();

getVideoThumbnail(uri);

rl_l.setOnTouchListener(new OnTouchListener() {

public boolean onTouch(View v, MotionEvent event) {

return (mGestureDetector != null)&& mGestureDetector.onTouchEvent(event);

}

});

lp=(android.widget.RelativeLayout.LayoutParams) imageviewPreview.getLayoutParams();

mGestureDetector = new GestureDetector(this,new CoverGestureListener());

wWidth=getWindowManager().getDefaultDisplay().getWidth();

}

public void onWindowFocusChanged(boolean hasFocus) {

iWidth=imageviewPreview.getWidth();

iWidth=wWidth-iWidth;

tWidth=iWidth/10;

arrayWidth=new int[10];

for(int i=0;i<10;i++){

arrayWidth[i]=tWidth+(i*tWidth);

}

seekTo(0);

super.onWindowFocusChanged(hasFocus);

}

private void seekTo(float paramFloat) {

float f = paramFloat - this.imageviewPreview.getWidth() / 2;

if(f<0){

f=0;

}if(f>iWidth){

f=iWidth;

}

lp.leftMargin = ((int) f);

for(int i=0;i

if(arrayWidth[i]>=f){

imageviewPreview.setImageBitmap(bitmaps.get(i));

ivw_to2.setImageBitmap(bitmaps.get(i));

break;

}

}

this.imageviewPreview.setLayoutParams(this.lp);

}

private class CoverGestureListener extends GestureDetector.SimpleOnGestureListener {

public boolean onDown(MotionEvent e) {

seekTo(e.getX());

return true;

}

public boolean onScroll(MotionEvent e1, MotionEvent e2,float distanceX, float distanceY) {

float f = e2.getX();

seekTo(f);

return super.onScroll(e1, e2, distanceX, distanceY);

}

}

public void getVideoThumbnail(Uri uri) {

Bitmap bitmap=null;

MediaMetadataRetriever retriever = new MediaMetadataRetriever();

try {

retriever.setDataSource(context, uri);

String time = retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION);

int seconds=Integer.valueOf(time)/1000;

int timeS=Integer.valueOf(time)/10;

for(int i=1;i<=10;i++){

bitmap=retriever.getFrameAtTime(i*timeS*1000,MediaMetadataRetriever.OPTION_CLOSEST);

bitmaps.add(bitmap);

addImgView(bitmap);

}

} catch (IllegalArgumentException e) {

e.printStackTrace();

} catch (RuntimeException e) {

e.printStackTrace();

} finally {

try {

retriever.release();

} catch (RuntimeException e) {

e.printStackTrace();

}

}

}

public void addImgView(Bitmap bitmap){

SquareImageView imageView=new SquareImageView(context);

LinearLayout.LayoutParams lp=new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);

lp.weight=1;

imageView.setLayoutParams(lp);

imageView.setImageBitmap(bitmap);

linearLayout.addView(imageView);

}

}

因为是demo所以代码写的比较乱,将就着看吧.哈哈.

demo链接:bin目录下有apk 可直接拖到模拟器里面看效果.

链接：http://share.weiyun.com/62b725b7fde04130f671b7023c7e1aed (密码：M13t)

原文：http://blog.csdn.net/tanranran/article/details/43561581