Android选择图片或视频进行循环播放

2023-09-22 17:47:34 64

项目要求对本地图片或者视频进行轮播，功能实现完成后发现只是在模拟器上运行ok,后来发现是文件路径的原因。
文件uri的头部有两种一种是以file开头一种是以content开头要进行判断转化

实现如下：

视频点击吊起文件查看：

privatevoidsetVideoPath(){
Intentintent=newIntent(Intent.ACTION_GET_CONTENT);
intent.setType("*/*");//设置类型，我这里是任意类型，任意后缀的可以这样写。
intent.addCategory(Intent.CATEGORY_OPENABLE);
startActivityForResult(intent,VIDEO_PATH);
}

在返回中取得选中文件路径

@Override
publicvoidonActivityResult(intrequestCode,intresultCode,Intentdata){
if(resultCode!=RESULT_OK)
return;

switch(requestCode){

caseVIDEO_PATH:
Uriuri=data.getData();
Stringpath=getPath(uri);
showToastReal("你选中的视频路径："+path);
SpUtils.getInstace(this).saveString("videoPath",path);
break;
casePIC_PATH:
UripicUri=data.getData();
StringpicPath=getPath(picUri);
showToastReal("你选中的图片路径："+picPath);
SpUtils.getInstace(this).saveString("picPath",picPath);
break;
}
}

publicStringgetPath(Uriuri){
Stringpath;
if("file".equalsIgnoreCase(uri.getScheme())){//使用第三方应用打开
path=uri.getPath();
returnpath;
}
if(Build.VERSION.SDK_INT>Build.VERSION_CODES.KITKAT){//4.4以后
path=getPath(this,uri);
}else{//4.4以下下系统调用方法
path=getRealPathFromURI(uri);
}
returnpath;
}

@SuppressLint("NewApi")
publicStringgetPath(finalContextcontext,finalUriuri){

finalbooleanisKitKat=Build.VERSION.SDK_INT>=Build.VERSION_CODES.KITKAT;

//DocumentProvider
if(isKitKat&&DocumentsContract.isDocumentUri(context,uri)){
//ExternalStorageProvider
if(isExternalStorageDocument(uri)){
finalStringdocId=DocumentsContract.getDocumentId(uri);
finalString[]split=docId.split(":");
finalStringtype=split[0];

if("primary".equalsIgnoreCase(type)){
returnEnvironment.getExternalStorageDirectory()+"/"+split[1];
}
}
//DownloadsProvider
elseif(isDownloadsDocument(uri)){

finalStringid=DocumentsContract.getDocumentId(uri);
finalUricontentUri=ContentUris.withAppendedId(
Uri.parse("content://downloads/public_downloads"),Long.valueOf(id));

returngetDataColumn(context,contentUri,null,null);
}
//MediaProvider
elseif(isMediaDocument(uri)){
finalStringdocId=DocumentsContract.getDocumentId(uri);
finalString[]split=docId.split(":");
finalStringtype=split[0];

UricontentUri=null;
if("image".equals(type)){
contentUri=MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
}elseif("video".equals(type)){
contentUri=MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
}elseif("audio".equals(type)){
contentUri=MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
}

finalStringselection="_id=?";
finalString[]selectionArgs=newString[]{split[1]};

returngetDataColumn(context,contentUri,selection,selectionArgs);
}
}
//MediaStore(andgeneral)
elseif("content".equalsIgnoreCase(uri.getScheme())){
returngetDataColumn(context,uri,null,null);
}
//File
elseif("file".equalsIgnoreCase(uri.getScheme())){
returnuri.getPath();
}
returnnull;
}
/**
*GetthevalueofthedatacolumnforthisUri.Thisisusefulfor
*MediaStoreUris,andotherfile-basedContentProviders.
*
*@paramcontextThecontext.
*@paramuriTheUritoquery.
*@paramselection(Optional)Filterusedinthequery.
*@paramselectionArgs(Optional)Selectionargumentsusedinthequery.
*@returnThevalueofthe_datacolumn,whichistypicallyafilepath.
*/
publicStringgetDataColumn(Contextcontext,Uriuri,Stringselection,
String[]selectionArgs){

Cursorcursor=null;
finalStringcolumn="_data";
finalString[]projection={column};

try{
cursor=context.getContentResolver().query(uri,projection,selection,selectionArgs,
null);
if(cursor!=null&&cursor.moveToFirst()){
finalintcolumn_index=cursor.getColumnIndexOrThrow(column);
returncursor.getString(column_index);
}
}finally{
if(cursor!=null)
cursor.close();
}
returnnull;
}

/**
*@paramuriTheUritocheck.
*@returnWhethertheUriauthorityisExternalStorageProvider.
*/
publicbooleanisExternalStorageDocument(Uriuri){
return"com.android.externalstorage.documents".equals(uri.getAuthority());
}

/**
*@paramuriTheUritocheck.
*@returnWhethertheUriauthorityisDownloadsProvider.
*/
publicbooleanisDownloadsDocument(Uriuri){
return"com.android.providers.downloads.documents".equals(uri.getAuthority());
}

/**
*@paramuriTheUritocheck.
*@returnWhethertheUriauthorityisMediaProvider.
*/
publicbooleanisMediaDocument(Uriuri){
return"com.android.providers.media.documents".equals(uri.getAuthority());
}

实现视频轮播

publicclassVideoActivityextendsBaseActivity{

@Bind(R.id.sv_ad)
SurfaceViewvv;
@Bind(R.id.id_ig_back)
ImageViewidIgBack;
privateMediaPlayermPlayer;
privateStringpath;

@Override
protectedvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_video);
ButterKnife.bind(this);
verifyStoragePermissions(this);
init();
//init2();
}

privatevoidinit2(){
Stringpath=SpUtils.getInstace(VideoActivity.this).getString("videoPath");
Uriuri=Uri.parse("file://"+path);
try{
MediaPlayermediaPlayer=newMediaPlayer();
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaPlayer.setDataSource(getApplicationContext(),uri);
mediaPlayer.prepare();
mediaPlayer.start();
}catch(IOExceptione){
e.printStackTrace();
}

}


privatevoidinit(){
idIgBack.setOnClickListener(newView.OnClickListener(){
@Override
publicvoidonClick(Viewv){
finish();
}
});
vv.getHolder().addCallback(newSurfaceHolder.Callback(){

@Override
publicvoidsurfaceDestroyed(SurfaceHolderholder){
if(mPlayer!=null){
mPlayer.stop();
mPlayer.release();
mPlayer=null;
}
}

@Override
publicvoidsurfaceCreated(SurfaceHolderholder){

path=SpUtils.getInstace(VideoActivity.this).getString("videoPath");

try{
if(mPlayer==null){
mPlayer=MediaPlayer.create(VideoActivity.this,Uri.parse("file://"+path));
}
if(mPlayer==null){
showToastReal("请在个人中心中选择正确的视频");
}
mPlayer.setDisplay(holder);//将SurfaceHolder关联mediaplayer
mPlayer.setLooping(true);
mPlayer.start();

mPlayer.setOnErrorListener(newMediaPlayer.OnErrorListener(){

@Override
publicbooleanonError(MediaPlayermp,intwhat,
intextra){
//TODOAuto-generatedmethodstub
returnfalse;
}
});
}catch(Exceptione){
e.printStackTrace();
}

}

@Override
publicvoidsurfaceChanged(SurfaceHolderholder,intformat,
intwidth,intheight){

}
});
}

publicvoidonBack(Viewview){
finish();
}

@Override
publicvoidloadNetData(){

}

privatestaticfinalintREQUEST_EXTERNAL_STORAGE=1;
privatestaticString[]PERMISSIONS_STORAGE={
Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.WRITE_EXTERNAL_STORAGE
};


/**
*检查应用程序是否允许写入存储设备
*
*

*

*如果应用程序不允许那么会提示用户授予权限
*
*@paramactivity
*/
publicstaticvoidverifyStoragePermissions(Activityactivity){
//Checkifwehavewritepermission
intpermission=ActivityCompat.checkSelfPermission(activity,Manifest.permission.WRITE_EXTERNAL_STORAGE);


if(permission!=PackageManager.PERMISSION_GRANTED){
//Wedon'thavepermissionsoprompttheuser
ActivityCompat.requestPermissions(
activity,
PERMISSIONS_STORAGE,
REQUEST_EXTERNAL_STORAGE
);
}
}
}

layout的实现

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持毛票票。

Android选择图片或视频进行循环播放

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