我的应用程序允许用户按下按钮，它打开摄像头进行视频捕获，他们可以拍摄视频，它将显示在SD卡中。如果用户在相机打开时按下停止，我会关闭此强制 - 将结果ResultInfo {who = null，request = 200，result = 0，data = null}发送到活动失败。 每当我停止录制视频时，应用程序都会崩溃。但是视频存储在目录中，并使用相同的文件命名格式。
这是活动类
public class VideocameraActivity extends Activity {
private Uri fileUri;
public static final int MEDIA_TYPE_VIDEO = 2;
private static final int CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE = 200;
public static VideocameraActivity ActivityContext =null;
public static TextView output;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.observation);
ActivityContext = this;
ImageView buttonRecording = (ImageView)findViewById(R.id.add_rowBtn);
//output = (TextView)findViewById(R.id.output);
buttonRecording.setOnClickListener(new Button.OnClickListener(){
@Override
public void onClick(View arg0) {
// create new Intentwith with Standard Intent action that can be
// sent to have the camera application capture an video and return it.
Intent intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
// create a file to save the video
fileUri = getOutputMediaFileUri(MEDIA_TYPE_VIDEO);
// set the image file name
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
// set the video image quality to high
intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
// start the Video Capture Intent
startActivityForResult(intent, CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE);
}});
}
/** Create a file Uri for saving an image or video */
private static Uri getOutputMediaFileUri(int type){
return Uri.fromFile(getOutputMediaFile(type));
}
/** Create a File for saving an image or video */
private static File getOutputMediaFile(int type){
// Check that the SDCard is mounted
File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES), "MyCameraVideo");
// Create the storage directory(MyCameraVideo) if it does not exist
if (! mediaStorageDir.exists()){
if (! mediaStorageDir.mkdirs()){
output.setText("Failed to create directory MyCameraVideo.");
Toast.makeText(ActivityContext, "Failed to create directory MyCameraVideo.",
Toast.LENGTH_LONG).show();
Log.d("MyCameraVideo", "Failed to create directory MyCameraVideo.");
return null;
}
}
// Create a media file name
// For unique file name appending current timeStamp with file name
java.util.Date date= new java.util.Date();
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss")
.format(date.getTime());
File mediaFile;
if(type == MEDIA_TYPE_VIDEO) {
// For unique video file name appending current timeStamp with file name
mediaFile = new File(mediaStorageDir.getPath() + File.separator +
"VID_"+ timeStamp + ".mp4");
} else {
return null;
}
return mediaFile;
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// After camera screen this code will executed
if (requestCode == CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE) {
if (resultCode == RESULT_OK) {
//output.setText("Video File : " +data.getData());
// Video captured and saved to fileUri specified in the Intent
Toast.makeText(this, "Video saved to:\n" +
data.getData(), Toast.LENGTH_LONG).show();
} /*else if (resultCode == RESULT_CANCELED) {
output.setText("User cancelled the video capture.");
// User cancelled the video capture
Toast.makeText(this, "User cancelled the video capture.",
Toast.LENGTH_LONG).show();
} else {
output.setText("Video capture failed.");
// Video capture failed, advise user
Toast.makeText(this, "Video capture failed.",
Toast.LENGTH_LONG).show();
}*/
}
}
}
Log Cat错误：
11-07 06:48:59.062: D/dalvikvm(1585): GC_FOR_ALLOC freed 71K, 6% free 2869K/3048K, paused 9ms, total 10ms
11-07 06:48:59.074: I/dalvikvm-heap(1585): Grow heap (frag case) to 7.069MB for 4367372-byte allocation
11-07 06:48:59.090: D/dalvikvm(1585): GC_FOR_ALLOC freed <1K, 3% free 7134K/7316K, paused 17ms, total 17ms
11-07 06:48:59.174: D/dalvikvm(1585): GC_FOR_ALLOC freed 1K, 3% free 7610K/7776K, paused 6ms, total 6ms
11-07 06:48:59.206: D/dalvikvm(1585): GC_FOR_ALLOC freed 5K, 2% free 9140K/9300K, paused 2ms, total 2ms
11-07 06:48:59.562: D/libEGL(1585): loaded /system/lib/egl/libEGL_genymotion.so
11-07 06:48:59.562: D/(1585): HostConnection::get() New Host Connection established 0xb95313a8, tid 1585
11-07 06:48:59.570: D/libEGL(1585): loaded /system/lib/egl/libGLESv1_CM_genymotion.so
11-07 06:48:59.570: D/libEGL(1585): loaded /system/lib/egl/libGLESv2_genymotion.so
11-07 06:48:59.606: W/EGL_genymotion(1585): eglSurfaceAttrib not implemented
11-07 06:48:59.610: E/OpenGLRenderer(1585): Getting MAX_TEXTURE_SIZE from GradienCache
11-07 06:48:59.610: E/OpenGLRenderer(1585): MAX_TEXTURE_SIZE: 8192
11-07 06:48:59.614: E/OpenGLRenderer(1585): Getting MAX_TEXTURE_SIZE from Caches::initConstraints()
11-07 06:48:59.614: E/OpenGLRenderer(1585): MAX_TEXTURE_SIZE: 8192
11-07 06:48:59.614: D/OpenGLRenderer(1585): Enabling debug mode 0
11-07 06:49:14.386: W/EGL_genymotion(1585): eglSurfaceAttrib not implemented
11-07 06:49:34.218: D/dalvikvm(1585): GC_FOR_ALLOC freed 645K, 7% free 10544K/11296K, paused 9ms, total 19ms
11-07 06:49:38.050: W/EGL_genymotion(1585): eglSurfaceAttrib not implemented
11-07 06:49:38.614: I/System.out(1585): Url--------login--> http://ilearniteasy.com/new-version/api/get_login.php?salt=8006&sign=85db4eebea8fca6814ad73a75efcdbf5&site_url=http://www.mydistance-learning-college.com/students/&username=teststudent7&password=password1
11-07 06:49:38.730: W/EGL_genymotion(1585): eglSurfaceAttrib not implemented
11-07 06:49:40.362: I/Choreographer(1585): Skipped 97 frames! The application may be doing too much work on its main thread.
11-07 06:49:44.230: D/dalvikvm(1585): GC_FOR_ALLOC freed 240K, 5% free 12079K/12676K, paused 3ms, total 15ms
11-07 06:49:44.278: W/EGL_genymotion(1585): eglSurfaceAttrib not implemented
11-07 06:49:59.114: W/EGL_genymotion(1585): eglSurfaceAttrib not implemented
11-07 06:50:02.946: W/EGL_genymotion(1585): eglSurfaceAttrib not implemented
答案 0 :(得分：0)
请检查
if(data!=null) {
...
}