Android 滑动改变视频音量和视频缩略图
/**
* 滑动 改变音量
* @param percent
*/
private void onVolumn(float percent) {
if(mVolumn == -1){
mVolumn = mAudioManager.getStreamVolume(AudioManager.STREAM_MUSIC); //获取当前音量
if(mVolumn < 0){
mVolumn = 0;
}
//显示
mOperationBg.setImageResource(R.drawable.video_volumn_bg);
mOperationVolumnBrightness.setVisibility(View.VISIBLE);
}
int index = (int) (percent * mMaxVolume + mVolumn);
if(index > mMaxVolume){
index = mMaxVolume;
} else if(index < 0){
index = 0;
}
mAudioManager.setStreamVolume(AudioManager.STREAM_MUSIC, index, 0); //设置音量
LayoutParams lp = mOperationPercent.getLayoutParams();
lp.width = findViewById(R.id.operation_full).getLayoutParams().width * index / mMaxVolume;
mOperationPercent.setLayoutParams(lp);
}
/**
* 滑动 改变亮度
* @param percent
*/
private void onBrightness(float percent) {
if(mBrightness == -1f){
mBrightness = getWindow().getAttributes().screenBrightness;
if(mBrightness < 0.01f){
mBrightness = 0.50f;
}
mOperationBg.setImageResource(R.drawable.video_brightness_bg); //显示
mOperationVolumnBrightness.setVisibility(View.VISIBLE);
}
WindowManager.LayoutParams lpa = getWindow().getAttributes();
lpa.screenBrightness = mBrightness + percent;
if(lpa.screenBrightness > 1.0f){
lpa.screenBrightness = 1.0f;
} else if(lpa.screenBrightness < 0.01f){
lpa.screenBrightness = 0.01f;
}
getWindow().setAttributes(lpa); //改变亮度
LayoutParams lp = mOperationPercent.getLayoutParams();
lp.width = (int) (findViewById(R.id.operation_full).getLayoutParams().width * lpa.screenBrightness);
mOperationPercent.setLayoutParams(lp);
}
private void init() {
String[] thumbColumns = new String[]{
MediaStore.Video.Thumbnails.VIDEO_ID,
MediaStore.Video.Thumbnails.DATA//缩略图路径
};
String[] MediaColums = new String[]{
MediaStore.Video.Media._ID,
MediaStore.Video.Media.TITLE,//视频名称
MediaStore.Video.Media.DATA,//视频路径
// MediaStore.Video.Media.DURATION,
// MediaStore.Video.Media.SIZE
};
cursor = this.managedQuery(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, MediaColums, null, null, null);
videoList = new ArrayList<VideoInfo>();
if(cursor.moveToFirst()){
do{
VideoInfo info = new VideoInfo();
//获取视频名称
info.videoTitle = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.TITLE));
//获取视频的路径
info.videoPath = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Video.Media.DATA));
//获取视频缩略图的路径
String selection = MediaStore.Video.Media._ID + "=?";
int id = cursor.getInt(cursor.getColumnIndexOrThrow(MediaStore.Video.Media._ID));
String[] selectionArgs = new String[]{
id+""
};
Cursor thumbCursor = this.managedQuery(MediaStore.Video.Thumbnails.EXTERNAL_CONTENT_URI, thumbColumns, selection, selectionArgs, null);
if(thumbCursor != null){
//完成获取视频缩略图的路径
info.thumbPath = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.Video.Thumbnails.DATA));
// info.thumbPath = thumbCursor.getString(thumbCursor.getColumnIndexOrThrow(MediaStore.Video.Thumbnails.DATA));
}
videoList.add(info);
} while(cursor.moveToNext());
}
VideoAdapter adapter = new VideoAdapter(this, videoList);
getListView().setAdapter(adapter);
}
static class VideoInfo {
String thumbPath;//缩略图路径
String videoTitle;//视频名字
String videoPath;//视频的路径
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
if(convertView == null){
holder = new ViewHolder();
convertView = getLayoutInflater().inflate(R.layout.list_item, null);
holder.thumbImage = (ImageView) convertView.findViewById(R.id.thumb_image);
holder.videoTitle = (TextView) convertView.findViewById(R.id.video_title);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
//指定视频名字
holder.videoTitle.setText(videoItems.get(position).videoTitle);
//指定缩略图
if(videoItems.get(position).thumbPath != null){
Bitmap bitmap = ThumbnailUtils.createVideoThumbnail(videoItems.get(position).thumbPath, Thumbnails.MINI_KIND);
Bitmap bitmap1 = ThumbnailUtils.extractThumbnail(bitmap, 200, 200);
BitmapDrawable db = new BitmapDrawable(bitmap1);
holder.thumbImage.setImageDrawable(db);
}
return convertView;
}
class ViewHolder {
ImageView thumbImage;
TextView videoTitle;
}
main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<io.vov.vitamio.widget.VideoView
android:id="@+id/surfaceview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true" />
<FrameLayout
android:id="@+id/operation_volumn_brightness"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:background="#00000000"
android:padding="0dip"
android:visibility="invisible" >
<ImageView
android:id="@+id/operation_bg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/video_volumn_bg" />
<FrameLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|bottom"
android:paddingBottom="25dip" >
<ImageView
android:id="@+id/operation_full"
android:layout_width="94dip"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:src="@drawable/video_num_bg" />
<ImageView
android:id="@+id/operation_percent"
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:scaleType="matrix"
android:src="@drawable/video_num_front" />
</FrameLayout>
</FrameLayout>
</RelativeLayout>
view_list.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<RelativeLayout
android:id="@+id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentBottom="true" >
<ListView
android:id="@android:id/list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dip" />
</RelativeLayout>
</RelativeLayout>
view_list.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<ImageView
android:id="@+id/thumb_image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dip"
android:background="@drawable/sms" />
<TextView
android:id="@+id/video_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginLeft="10dip"
android:layout_toRightOf="@id/thumb_image"
android:singleLine="true"
android:textSize="18sp"
android:textStyle="bold" />
</RelativeLayout>
