我在尝试在Android上选择视频时遇到问题。我正在使用以下代码启动活动。
var intent = new Intent();
intent.SetType("video/*");
intent.SetAction(Intent.ActionGetContent);
this.StartActivityForResult(Intent.CreateChooser(intent, "Select video"), 200);
然后在OnActivityResult回调中，我使用以下代码来获取数据的URI。
public override void OnActivityResult(int requestCode, Result resultCode, Intent data)
{
base.OnActivityResult(requestCode, resultCode, data);
if (requestCode == 200 && resultCode == Result.Ok)
{
try
{
Android.Net.Uri contentURI = data.Data;
ICursor cursor = Activity.ContentResolver.Query(contentURI, null, null, null, null);
cursor.MoveToFirst();
string documentId = cursor.GetString(0);
documentId = documentId.Split(':')[1];
cursor.Close();
cursor = Activity.ContentResolver.Query(
Android.Provider.MediaStore.Video.Media.ExternalContentUri,
null, MediaStore.Video.Media.InterfaceConsts.Id + " = ? ", new[] { documentId }, null);
cursor.MoveToFirst();
string selectedPath = cursor.GetString(cursor.GetColumnIndex(MediaStore.Video.Media.InterfaceConsts.Data));
var fileBytes = System.IO.File.ReadAllBytes(selectedPath);
//await UploadFile(fileBytes);
}
catch (Java.Lang.Exception e)
{
System.Console.WriteLine(e.Message);
}
}
}
图库打开后，应用程序很快就崩溃了。我正在使用Android Xperia ion与Android 4.0.3版来调试应用程序。我第一次测试我的代码，它运行但现在每次画廊打开时，应用程序崩溃。
这是我的完整logcat：
4-28 02:15:18.102 D/Mono (10277): DllImport attempting to load: '__Internal'.
04-28 02:15:18.102 D/Mono (10277): DllImport loaded library '(null)'.
04-28 02:15:18.102 D/Mono (10277): DllImport searching in: '__Internal' ('(null)').
04-28 02:15:18.102 D/Mono (10277): Searching for '_monodroid_lref_log_new'.
04-28 02:15:18.102 D/Mono (10277): Probing '_monodroid_lref_log_new'.
04-28 02:15:18.102 D/Mono (10277): Found as '_monodroid_lref_log_new'.
04-28 02:15:18.112 D/Mono (10277): DllImport searching in: '__Internal' ('(null)').
04-28 02:15:18.112 D/Mono (10277): Searching for '_monodroid_lref_log_delete'.
04-28 02:15:18.112 D/Mono (10277): Probing '_monodroid_lref_log_delete'.
04-28 02:15:18.112 D/Mono (10277): Found as '_monodroid_lref_log_delete'.
04-28 02:15:18.112 D/Mono (10277): DllImport searching in: '__Internal' ('(null)').
04-28 02:15:18.112 D/Mono (10277): Searching for '_monodroid_gref_log_new'.
04-28 02:15:18.112 D/Mono (10277): Probing '_monodroid_gref_log_new'.
04-28 02:15:18.112 D/Mono (10277): Found as '_monodroid_gref_log_new'.
04-28 02:15:18.142 D/Mono (10277): DllImport searching in: '__Internal' ('(null)').
04-28 02:15:18.142 D/Mono (10277): Searching for '_monodroid_get_identity_hash_code'.
04-28 02:15:18.142 D/Mono (10277): Probing '_monodroid_get_identity_hash_code'.
04-28 02:15:18.142 D/Mono (10277): Found as '_monodroid_get_identity_hash_code'.
04-28 02:15:18.263 D/Mono (10277): DllImport searching in: '__Internal' ('(null)').
04-28 02:15:18.263 D/Mono (10277): Searching for 'monodroid_typemap_java_to_managed'.
04-28 02:15:18.263 D/Mono (10277): Probing 'monodroid_typemap_java_to_managed'.
04-28 02:15:18.263 D/Mono (10277): Found as 'monodroid_typemap_java_to_managed'.
04-28 02:15:18.413 D/Mono (10277): DllImport searching in: '__Internal' ('(null)').
04-28 02:15:18.413 D/Mono (10277): Searching for '_monodroid_gref_log'.
04-28 02:15:18.413 D/Mono (10277): Probing '_monodroid_gref_log'.
04-28 02:15:18.413 D/Mono (10277): Found as '_monodroid_gref_log'.
04-28 02:15:18.453 D/Mono (10277): DllImport searching in: '__Internal' ('(null)').
04-28 02:15:18.453 D/Mono (10277): Searching for 'monodroid_typemap_managed_to_java'.
04-28 02:15:18.453 D/Mono (10277): Probing 'monodroid_typemap_managed_to_java'.
04-28 02:15:18.453 D/Mono (10277): Found as 'monodroid_typemap_managed_to_java'.
04-28 02:15:18.503 D/Mono (10277): Image addref System.Core[0xe692e8] -> System.Core.dll[0xe77a50]: 1
04-28 02:15:18.503 D/Mono (10277): Assembly System.Core[0xe692e8] added to domain RootDomain, ref_count=1
04-28 02:15:18.503 D/Mono (10277): AOT module 'System.Core.dll.so' not found: Cannot load library: load_library[1091]: Library '/data/data/com.dualdub.androclient/lib/libaot-System.Core.dll.so' not found
04-28 02:15:18.503 D/Mono (10277): AOT module '/Users/builder/data/lanes/3053/a94a03b5/source/monodroid/builds/install/mono-armv7/lib/mono/aot-cache/arm/System.Core.dll.so' not found: Cannot load library: load_library[1091]: Library '/data/data/com.dualdub.androclient/lib/libaot-System.Core.dll.so' not found
04-28 02:15:18.523 D/Mono (10277): Unloading image data-0x63529008 [0xe86468].
04-28 02:15:18.523 D/Mono (10277): Assembly Ref addref Mono.Android[0xca8958] -> System.Core[0xe692e8]: 2
04-28 02:15:18.533 D/Mono (10277): Assembly Ref addref System.Core[0xe692e8] -> mscorlib[0xc76d38]: 3
Loaded assembly: System.Core.dll
04-28 02:15:19.123 D/Mono (10277): DllImport searching in: '__Internal' ('(null)').
04-28 02:15:19.123 D/Mono (10277): Searching for '_monodroid_gref_log_delete'.
04-28 02:15:19.123 D/Mono (10277): Probing '_monodroid_gref_log_delete'.
04-28 02:15:19.123 D/Mono (10277): Found as '_monodroid_gref_log_delete'.
04-28 02:15:19.143 D/Mono (10277): DllImport searching in: '__Internal' ('(null)').
04-28 02:15:19.143 D/Mono (10277): Searching for '_monodroid_gc_wait_for_bridge_processing'.
04-28 02:15:19.143 D/Mono (10277): Probing '_monodroid_gc_wait_for_bridge_processing'.
04-28 02:15:19.143 D/Mono (10277): Found as '_monodroid_gc_wait_for_bridge_processing'.
04-28 02:15:19.173 D/Mono (10277): Assembly Ref addref OkHttp[0xc5e660] -> mscorlib[0xc76d38]: 4
04-28 02:15:19.173 D/Mono (10277): Assembly Ref addref OkHttp[0xc5e660] -> Mono.Android[0xca8958]: 2
04-28 02:15:19.173 D/Mono (10277): Assembly Ref addref Refractored.Controls.CircleImageView[0xbe5e30] -> mscorlib[0xc76d38]: 5
04-28 02:15:19.173 D/Mono (10277): Assembly Ref addref Refractored.Controls.CircleImageView[0xbe5e30] -> Mono.Android[0xca8958]: 3
04-28 02:15:19.173 D/Mono (10277): Assembly Ref addref Xamarin.Android.Support.Animated.Vector.Drawable[0xc392e0] -> mscorlib[0xc76d38]: 6
04-28 02:15:19.173 D/Mono (10277): Assembly Ref addref Xamarin.Android.Support.Animated.Vector.Drawable[0xc392e0] -> Mono.Android[0xca8958]: 4
04-28 02:15:19.173 D/Mono (10277): Assembly Ref addref Xamarin.Android.Support.Design[0xc38300] -> mscorlib[0xc76d38]: 7
04-28 02:15:19.173 D/Mono (10277): Assembly Ref addref Xamarin.Android.Support.Design[0xc38300] -> Mono.Android[0xca8958]: 5
04-28 02:15:19.173 D/Mono (10277): Assembly Ref addref Xamarin.Android.Support.v4[0xbe7ef8] -> mscorlib[0xc76d38]: 8
04-28 02:15:19.183 D/Mono (10277): Assembly Ref addref Xamarin.Android.Support.v4[0xbe7ef8] -> Mono.Android[0xca8958]: 6
04-28 02:15:19.183 D/Mono (10277): Assembly Ref addref Xamarin.Android.Support.v7.AppCompat[0xb7ff80] -> mscorlib[0xc76d38]: 9
04-28 02:15:19.183 D/Mono (10277): Assembly Ref addref Xamarin.Android.Support.v7.AppCompat[0xb7ff80] -> Mono.Android[0xca8958]: 7
04-28 02:15:19.183 D/Mono (10277): Assembly Ref addref Xamarin.Android.Support.v7.CardView[0xbdea28] -> mscorlib[0xc76d38]: 10
04-28 02:15:19.183 D/Mono (10277): Assembly Ref addref Xamarin.Android.Support.v7.CardView[0xbdea28] -> Mono.Android[0xca8958]: 8
04-28 02:15:19.183 D/Mono (10277): Assembly Ref addref Xamarin.Android.Support.v7.RecyclerView[0xc2b0d0] -> mscorlib[0xc76d38]: 11
04-28 02:15:19.183 D/Mono (10277): Assembly Ref addref Xamarin.Android.Support.v7.RecyclerView[0xc2b0d0] -> Mono.Android[0xca8958]: 9
04-28 02:15:19.193 D/Mono (10277): Assembly Ref addref Xamarin.Android.Support.Vector.Drawable[0xc22340] -> mscorlib[0xc76d38]: 12
04-28 02:15:19.193 D/Mono (10277): Assembly Ref addref Xamarin.Android.Support.Vector.Drawable[0xc22340] -> Mono.Android[0xca8958]: 10
04-28 02:15:19.193 D/Mono (10277): Assembly Ref addref Yourtime[0xc28778] -> Mono.Android[0xca8958]: 11
Loaded assembly: MonoDroidConstructors [External]
04-28 02:15:19.444 D/Mono (10277): Assembly Ref addref Yourtime[0xc28778] -> mscorlib[0xc76d38]: 13
04-28 02:15:20.234 D/Mono (10277): Image addref System.Net.Http[0x1255c38] -> System.Net.Http.dll[0x1256b70]: 1
04-28 02:15:20.234 D/Mono (10277): Assembly System.Net.Http[0x1255c38] added to domain RootDomain, ref_count=1
04-28 02:15:20.234 D/Mono (10277): AOT module 'System.Net.Http.dll.so' not found: Cannot load library: load_library[1091]: Library '/data/data/com.dualdub.androclient/lib/libaot-System.Net.Http.dll.so' not found
04-28 02:15:20.234 D/Mono (10277): AOT module '/Users/builder/data/lanes/3053/a94a03b5/source/monodroid/builds/install/mono-armv7/lib/mono/aot-cache/arm/System.Net.Http.dll.so' not found: Cannot load library: load_library[1091]: Library '/data/data/com.dualdub.androclient/lib/libaot-System.Net.Http.dll.so' not found
04-28 02:15:20.234 D/Mono (10277): Unloading image data-0x125e3e8 [0x1256fc0].
04-28 02:15:20.234 D/Mono (10277): Assembly Ref addref Yourtime[0xc28778] -> System.Net.Http[0x1255c38]: 2
04-28 02:15:20.244 D/Mono (10277): Assembly Ref addref System.Net.Http[0x1255c38] -> mscorlib[0xc76d38]: 14
Resolved pending breakpoint at 'CameraFragment.cs:320,1' to void Yourtime.Fragments.CameraFragment.OnActivityResult (int requestCode, Android.App.Result resultCode, Android.Content.Intent data) [0x00000].
Loaded assembly: System.Net.Http.dll
04-28 02:15:20.505 D/Mono (10277): Image addref System.Xml[0x12c3d68] -> System.Xml.dll[0x12c9890]: 1
04-28 02:15:20.505 D/Mono (10277): Assembly System.Xml[0x12c3d68] added to domain RootDomain, ref_count=1
04-28 02:15:20.505 D/Mono (10277): AOT module 'System.Xml.dll.so' not found: Cannot load library: load_library[1091]: Library '/data/data/com.dualdub.androclient/lib/libaot-System.Xml.dll.so' not found
04-28 02:15:20.505 D/Mono (10277): AOT module '/Users/builder/data/lanes/3053/a94a03b5/source/monodroid/builds/install/mono-armv7/lib/mono/aot-cache/arm/System.Xml.dll.so' not found: Cannot load library: load_library[1091]: Library '/data/data/com.dualdub.androclient/lib/libaot-System.Xml.dll.so' not found
04-28 02:15:20.535 D/Mono (10277): Unloading image data-0x63800008 [0x12c4080].
04-28 02:15:20.535 D/Mono (10277): Assembly Ref addref Mono.Android[0xca8958] -> System.Xml[0x12c3d68]: 2
04-28 02:15:20.545 D/Mono (10277): Assembly Ref addref System.Xml[0x12c3d68] -> mscorlib[0xc76d38]: 15
Loaded assembly: System.Xml.dll
04-28 02:15:21.285 I/dalvikvm(10277): Could not find method android.view.SurfaceView.<init>, referenced from method md5b48e0788c01ac4725f8b67ece4dbb3b8.CameraS.<init>
04-28 02:15:21.285 W/dalvikvm(10277): VFY: unable to resolve direct method 18819: Landroid/view/SurfaceView;.<init> (Landroid/content/Context;Landroid/util/AttributeSet;II)V
04-28 02:15:21.285 D/dalvikvm(10277): VFY: replacing opcode 0x70 at 0x0000
04-28 02:15:21.386 D/libEGL (10277): loaded /system/lib/egl/libGLES_android.so
04-28 02:15:21.386 D/libEGL (10277): loaded /system/lib/egl/libEGL_adreno200.so
04-28 02:15:21.396 D/libEGL (10277): loaded /system/lib/egl/libGLESv1_CM_adreno200.so
04-28 02:15:21.396 D/libEGL (10277): loaded /system/lib/egl/libGLESv2_adreno200.so
04-28 02:15:21.456 I/Adreno200-EGLSUB(10277): <ConfigWindowMatch:2078>: Format RGBA_8888.
04-28 02:15:21.466 D/memalloc(10277): /dev/pmem: Mapped buffer base:0x63d17000 size:3768320 offset:0 fd:70
04-28 02:15:21.476 E/ (10277): Can't open file for reading
04-28 02:15:21.476 E/ (10277): Can't open file for reading
04-28 02:15:21.476 D/OpenGLRenderer(10277): Enabling debug mode 0
04-28 02:15:21.696 D/memalloc(10277): /dev/pmem: Mapped buffer base:0x6430d000 size:7536640 offset:3768320 fd:73
04-28 02:15:21.736 D/memalloc(10277): /dev/pmem: Mapped buffer base:0x64a3d000 size:29986816 offset:26218496 fd:76
04-28 02:15:25.840 D/TextLayoutCache(10277): Using debug level: 0 - Debug Enabled: 0
04-28 02:15:25.890 I/Adreno200-EGLSUB(10277): <ConfigWindowMatch:2078>: Format RGBA_8888.
04-28 02:15:25.890 D/memalloc(10277): /dev/pmem: Mapped buffer base:0x67032000 size:9981952 offset:7999488 fd:83
04-28 02:15:25.960 D/memalloc(10277): /dev/pmem: Mapped buffer base:0x67b42000 size:43724800 offset:41742336 fd:89
04-28 02:15:27.061 D/memalloc(10277): /dev/pmem: Mapped buffer base:0x6a4f5000 size:24375296 offset:22392832 fd:92
04-28 02:15:29.023 D/OpenGLRenderer(10277): Flushing caches (mode 0)
04-28 02:15:29.023 D/memalloc(10277): /dev/pmem: Unmapping buffer base:0x63d17000 size:3768320 offset:0
04-28 02:15:29.023 D/memalloc(10277): /dev/pmem: Unmapping buffer base:0x6430d000 size:7536640 offset:3768320
04-28 02:15:29.023 D/memalloc(10277): /dev/pmem: Unmapping buffer base:0x64a3d000 size:29986816 offset:26218496
04-28 02:15:29.073 D/OpenGLRenderer(10277): Flushing caches (mode 0)
04-28 02:15:29.083 D/memalloc(10277): /dev/pmem: Unmapping buffer base:0x67032000 size:9981952 offset:7999488
04-28 02:15:29.083 D/memalloc(10277): /dev/pmem: Unmapping buffer base:0x67b42000 size:43724800 offset:41742336
04-28 02:15:29.083 D/memalloc(10277): /dev/pmem: Unmapping buffer base:0x6a4f5000 size:24375296 offset:22392832
04-28 02:15:29.554 D/OpenGLRenderer(10277): Flushing caches (mode 2
）
我在OnActionResultActivity的开头设置了一个断点但是应用程序在调试器到达之前崩溃了。有没有人知道如何从视频选择器获取视频数据？
答案 0 :(得分：2)
调用startActivityForResult传递选择操作和您希望用户选择的视频，如下所示：
startActivityForResult(new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Videos.Media.INTERNAL_CONTENT_URI), SELECT_VIDEO);
然后覆盖onActivityResult以侦听已做出选择的用户。
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data)
{
super.onActivityResult(requestCode, resultCode, data); if (requestCode == SELECT_VIDEO)
if (resultCode == Activity.RESULT_OK) {
Uri selectedVIDEO = data.getData();
}
}
希望这有帮助，如果是，那么接受我的回答。 ：）