安卓android.provider.MediaStore.ACTION_VIDEO_CAPTURE返回null onActivityResult具有承上启下7 [英] android android.provider.MediaStore.ACTION_VIDEO_CAPTURE return null onActivityResult with nexus 7
问题描述
我使用的意图录制视频。
所以我用下面的recordVideo按钮的点击code
Videofilepath =;
意向意图=新的意图(android.provider.MediaStore.ACTION_VIDEO_CAPTURE);
startActivityForResult(意向,REQUEST_VIDEO_CAPTURED);
和在onActivityResult
保护无效onActivityResult(INT申请code,INT结果code,意图数据){
如果(结果code == Activity.RESULT_OK){
开关(要求code){
案例IMAGE_PICK:
this.imageFromGallery(结果code,数据);
打破;
案例IMAGE_CAPTURE:
this.imageFromCamera(结果code,数据);
打破;
案例REQUEST_VIDEO_CAPTURED:
this.videoFromCamera(结果code,数据);
打破;
默认:
打破;
}
}
}
私人无效videoFromCamera(INT结果code,意图数据){
uriVideo = data.getData();
uploadedFileName =;
Constant.IS_FILE_ATTACH = TRUE;
Toast.makeText(PDFActivity.this,uriVideo.getPath(),Toast.LENGTH_LONG)
。显示();
的String [] filePathColumn = {MediaStore.Video.Media.DATA};
光标光标= getContentResolver()查询(uriVideo,filePathColumn,
NULL,NULL,NULL);
cursor.moveToFirst();
INT参数:columnIndex = cursor.getColumnIndex(filePathColumn [0]);
字符串文件路径= cursor.getString(参数:columnIndex);
Videofilepath =文件路径;
的System.out.println(从相机Videofilepath文件路径:
+ Videofilepath);
cursor.close();
文件F =新的文件(文件路径);
的System.out.println(文件创建:?+ f.exists());
位图BMAP = NULL;
做 {
尝试 {
//模拟网络接入。
视频下载(3000);
}赶上(InterruptedException异常E){
e.printStackTrace();
}
}而(f.exists()!);
BMAP = ThumbnailUtils.createVideoThumbnail(文件路径,
MediaStore.Video.Thumbnails.MICRO_KIND);
做 {
尝试 {
//模拟网络接入。
视频下载(1000);
}赶上(InterruptedException异常E){
e.printStackTrace();
}
}而(BMAP == NULL);
imageOrVideo =视频;
attachmentvalue.setImageBitmap(BMAP);
}
这code是工作的罚款与三星Galaxy Tab。但不工作的Nexus 7可能的Nexus 7有前置摄像头。 但我得到的结果数据的意图是空onActivityResult。
所以在我的logcat我得到了以下异常: -
12月8号至8日:51:31.160:E / AndroidRuntime(10899):致命异常:主要
十二月8号至8号:51:31.160:E / AndroidRuntime(10899):java.lang.RuntimeException的:不提供结果ResultInfo {谁= NULL,请求= 200,结果= -1,数据=意向{}}到活动{COM .example.activity / com.example.PDFActivity}:显示java.lang.NullPointerException
最后,我解决了这个问题。
的Nexus 7商店在 DCIM视频
目录,但 onActivityResults
返回空
。它的一个记录的问题的Nexus 7设备。
所以解决这个问题 intent.putExtra(MediaStore.EXTRA_OUTPUT,了fileURI);
在code是因为: -
在录制按钮点击code: -
意图=新的意图(android.provider.MediaStore.ACTION_VIDEO_CAPTURE);
=了fileURI getOutputMediaFile(MEDIA_TYPE_VIDEO); //创建一个文件保存在指定文件夹的视频(这适用于视频只)
intent.putExtra(MediaStore.EXTRA_OUTPUT,了fileURI);
intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY,1); //设定视频图像质量高
//启动视频捕捉意向
startActivityForResult(意向,REQUEST_VIDEO_CAPTURED_NEXUS);
内部开关code - onActivityResult的情况下块: -
保护无效onActivityResult(INT申请code,INT结果code,意图数据){
如果(结果code == Activity.RESULT_OK){
开关(要求code){
案例REQUEST_VIDEO_CAPTURED_NEXUS:
this.videoFromCameraNexus(结果code,数据);
打破;
默认:
打破;
}
}
}
// videoFromCameraNexus方法
私人无效videoFromCameraNexus(INT结果code,意图数据){
如果(了fileURI!= NULL){
Log.d(TAG,视频保存到:\ N+了fileURI);
Log.d(TAG,视频路径:\ N+ fileUri.getPath());
Log.d(TAG,视频名称:\ N+的getName(了fileURI));
//使用uri.getLastPathSegment()如果存放在文件夹中
//使用文件URI。
}
}
获取输出媒体文件URI以下方法
公众开放的getOutputMediaFile(整型)
{
//为了安全起见,你应该检查SD卡安装
如果(Environment.getExternalStorageState()!= NULL){
//这适用于Android 2.2及以上
文件mediaStorageDir =新的文件(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES),SMW_VIDEO);
//这个位置效果最好,如果你希望共享的创建的图像
//应用程序之间,坚持后,您的应用程序已被卸载。
//创建存储目录,如果它不存在
如果(!mediaStorageDir.exists()){
如果(!mediaStorageDir.mkdirs()){
Log.d(TAG,未能创建目录);
返回null;
}
}
//创建一个媒体文件名
字符串的timeStamp =新的SimpleDateFormat(YYYYMMDD_HHMMSS)格式(新的Date())。
文件媒体文件;
如果(类型== MEDIA_TYPE_VIDEO){
媒体文件=新的文件(mediaStorageDir.getPath()+文件分割符+
VID _+的timeStamp +.MP4);
} 其他 {
返回null;
}
返回Uri.fromFile(媒体文件);
}
返回null;
}
它为我工作。
I am using intent for record video.
so i use following code on recordVideo button's click
Videofilepath = "";
Intent intent = new Intent(android.provider.MediaStore.ACTION_VIDEO_CAPTURE);
startActivityForResult(intent,REQUEST_VIDEO_CAPTURED);
and in onActivityResult
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == Activity.RESULT_OK) {
switch (requestCode) {
case IMAGE_PICK:
this.imageFromGallery(resultCode, data);
break;
case IMAGE_CAPTURE:
this.imageFromCamera(resultCode, data);
break;
case REQUEST_VIDEO_CAPTURED:
this.videoFromCamera(resultCode, data);
break;
default:
break;
}
}
}
private void videoFromCamera(int resultCode, Intent data) {
uriVideo = data.getData();
uploadedFileName="";
Constant.IS_FILE_ATTACH = true;
Toast.makeText(PDFActivity.this, uriVideo.getPath(), Toast.LENGTH_LONG)
.show();
String[] filePathColumn = { MediaStore.Video.Media.DATA };
Cursor cursor = getContentResolver().query(uriVideo, filePathColumn,
null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String filePath = cursor.getString(columnIndex);
Videofilepath = filePath;
System.out.println("Videofilepath filepath from camera : "
+ Videofilepath);
cursor.close();
File f = new File(filePath);
System.out.println("file created ? : " + f.exists());
Bitmap bMap = null;
do {
try {
// Simulate network access.
Thread.sleep(3000);
} catch (InterruptedException e) {
e.printStackTrace();
}
} while (!f.exists());
bMap = ThumbnailUtils.createVideoThumbnail(filePath,
MediaStore.Video.Thumbnails.MICRO_KIND);
do {
try {
// Simulate network access.
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
} while (bMap == null);
imageOrVideo = "video";
attachmentvalue.setImageBitmap(bMap);
}
This code is working fine with samsung galaxy Tab. But not working with Nexus 7. May be Nexus 7 have front camera. but i got resultant data intent is null onActivityResult.
so in my Logcat i got the following exception :-
08-08 12:51:31.160: E/AndroidRuntime(10899): FATAL EXCEPTION: main
08-08 12:51:31.160: E/AndroidRuntime(10899): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=200, result=-1, data=Intent { }} to activity {com.example.activity/com.example.PDFActivity}: java.lang.NullPointerException
Finally I resolved this issue.
Nexus 7 Stores the videos in DCIM
directory but onActivityResults
it returns null
. Its an documented issue with Nexus 7 device.
so fix this issue with intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
the code is as :-
code on record button click:-
intent = new Intent(android.provider.MediaStore.ACTION_VIDEO_CAPTURE);
fileUri = getOutputMediaFile(MEDIA_TYPE_VIDEO); // create a file to save the video in specific folder (this works for video only)
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1); // set the video image quality to high
// start the Video Capture Intent
startActivityForResult(intent, REQUEST_VIDEO_CAPTURED_NEXUS);
code inside switch - case block of onActivityResult :-
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == Activity.RESULT_OK) {
switch (requestCode) {
case REQUEST_VIDEO_CAPTURED_NEXUS:
this.videoFromCameraNexus(resultCode, data);
break;
default:
break;
}
}
}
// videoFromCameraNexus method
private void videoFromCameraNexus(int resultCode, Intent data) {
if(fileUri != null) {
Log.d(TAG, "Video saved to:\n" + fileUri);
Log.d(TAG, "Video path:\n" + fileUri.getPath());
Log.d(TAG, "Video name:\n" + getName(fileUri));
// use uri.getLastPathSegment() if store in folder
//use the file Uri.
}
}
Get the output Media file uri with the following Method
public Uri getOutputMediaFile(int type)
{
// To be safe, you should check that the SDCard is mounted
if(Environment.getExternalStorageState() != null) {
// this works for Android 2.2 and above
File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES), "SMW_VIDEO");
// This location works best if you want the created images to be shared
// between applications and persist after your app has been uninstalled.
// Create the storage directory if it does not exist
if (! mediaStorageDir.exists()) {
if (! mediaStorageDir.mkdirs()) {
Log.d(TAG, "failed to create directory");
return null;
}
}
// Create a media file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
File mediaFile;
if(type == MEDIA_TYPE_VIDEO) {
mediaFile = new File(mediaStorageDir.getPath() + File.separator +
"VID_"+ timeStamp + ".mp4");
} else {
return null;
}
return Uri.fromFile(mediaFile);
}
return null;
}
Its works for me.
这篇关于安卓android.provider.MediaStore.ACTION_VIDEO_CAPTURE返回null onActivityResult具有承上启下7的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!