嘗試在gridview中查看保存的攝像頭圖片時發出警告

Question

我要在我的項目中使用攝像頭/圖庫。爲此，我首先拍攝了照片並將其保存在我的文件夾中（假設pictureworld），並將圖像保存在本地數據庫中。然後，當我試圖讓圖片在GridView中顯示時，我收到一條警告消息。在gridview中沒有圖片，但它可以查看圖片名稱。我已檢查它是否正在創建圖片，並且本地數據庫中的uri是正確的。我想補充一點，當我試圖使用圖庫保存圖片時，沒有任何問題。我已使用相同的適配器查看保存的圖庫和相機圖片。我在此附加警告：

03-10 17:48:11.367: W/System.err(522): at libcore.io.IoBridge.open(IoBridge.java:406) 
03-10 17:48:11.367: W/System.err(522): at java.io.FileInputStream.<init>(FileInputStream.java:78) 
03-10 17:48:11.367: W/System.err(522): at java.io.FileInputStream.<init>(FileInputStream.java:105) 
03-10 17:48:11.367: W/System.err(522): at android.content.ContentResolver.openInputStream(ContentResolver.java:369) 
03-10 17:48:11.367: W/System.err(522): at android.provider.MediaStore$Images$Media.getBitmap(MediaStore.java:705) 
03-10 17:48:11.367: W/System.err(522): at hr.s2is.ischool.admin.adapter.CommunityUserAdapter.getView(CommunityUserAdapter.java:71) 
03-10 17:48:11.367: W/System.err(522): at android.widget.AbsListView.obtainView(AbsListView.java:2033) 
03-10 17:48:11.367: W/System.err(522): at android.widget.GridView.makeAndAddView(GridView.java:1323) 
03-10 17:48:11.377: W/System.err(522): at android.widget.GridView.makeRow(GridView.java:328) 
03-10 17:48:11.377: W/System.err(522): at android.widget.GridView.fillDown(GridView.java:281) 
03-10 17:48:11.377: W/System.err(522): at android.widget.GridView.fillFromTop(GridView.java:403) 
03-10 17:48:11.377: W/System.err(522): at android.widget.GridView.layoutChildren(GridView.java:1215) 
03-10 17:48:11.377: W/System.err(522): at android.widget.AbsListView.onLayout(AbsListView.java:1863) 
03-10 17:48:11.377: W/System.err(522): at android.view.View.layout(View.java:11278) 
03-10 17:48:11.377: W/System.err(522): at android.view.ViewGroup.layout(ViewGroup.java:4224) 
03-10 17:48:11.377: W/System.err(522): at android.widget.RelativeLayout.onLayout(RelativeLayout.java:925) 
03-10 17:48:11.387: W/System.err(522): at android.view.View.layout(View.java:11278) 
03-10 17:48:11.387: W/System.err(522): at android.view.ViewGroup.layout(ViewGroup.java:4224) 
03-10 17:48:11.387: W/System.err(522): at android.widget.FrameLayout.onLayout(FrameLayout.java:431) 
03-10 17:48:11.387: W/System.err(522): at android.view.View.layout(View.java:11278) 
03-10 17:48:11.387: W/System.err(522): at android.view.ViewGroup.layout(ViewGroup.java:4224) 
03-10 17:48:11.387: W/System.err(522): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1628) 
03-10 17:48:11.397: W/System.err(522): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1486) 
03-10 17:48:11.397: W/System.err(522): at android.widget.LinearLayout.onLayout(LinearLayout.java:1399) 
03-10 17:48:11.397: W/System.err(522): at android.view.View.layout(View.java:11278) 
03-10 17:48:11.397: W/System.err(522): at android.view.ViewGroup.layout(ViewGroup.java:4224) 
03-10 17:48:11.397: W/System.err(522): at android.widget.FrameLayout.onLayout(FrameLayout.java:431) 
03-10 17:48:11.397: W/System.err(522): at android.view.View.layout(View.java:11278) 
03-10 17:48:11.397: W/System.err(522): at android.view.ViewGroup.layout(ViewGroup.java:4224) 
03-10 17:48:11.407: W/System.err(522): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1489) 
03-10 17:48:11.407: W/System.err(522): at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2442) 
03-10 17:48:11.407: W/System.err(522): at android.os.Handler.dispatchMessage(Handler.java:99) 
03-10 17:48:11.407: W/System.err(522): at android.os.Looper.loop(Looper.java:137) 
03-10 17:48:11.407: W/System.err(522): at android.app.ActivityThread.main(ActivityThread.java:4424) 
03-10 17:48:11.407: W/System.err(522): at java.lang.reflect.Method.invokeNative(Native Method) 
03-10 17:48:11.417: W/System.err(522): at java.lang.reflect.Method.invoke(Method.java:511) 
03-10 17:48:11.417: W/System.err(522): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 
03-10 17:48:11.417: W/System.err(522): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 
03-10 17:48:11.417: W/System.err(522): at dalvik.system.NativeStart.main(Native Method) 
03-10 17:48:11.417: W/System.err(522): Caused by: libcore.io.ErrnoException: open failed: ENOENT (No such file or directory) 
03-10 17:48:11.427: W/System.err(522): at libcore.io.Posix.open(Native Method) 
03-10 17:48:11.427: W/System.err(522): at libcore.io.BlockGuardOs.open(BlockGuardOs.java:110) 
03-10 17:48:11.427: W/System.err(522): at libcore.io.IoBridge.open(IoBridge.java:390) 

Answer 1

您是否授予讀取本地存儲的權限？您應該檢查是否在Android Manifest中聲明瞭有關寫入和讀取內部存儲的權限。

Answer 2

你添加權限

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> 

一件事：

有了SDK，你不能寫入內部存儲的根。這會導致你的error.Try像這樣

final File dir = new File(context.getFilesDir() + "/nfs/guille/groce/users/nicholsk/workspace3/SQLTest"); 
dir.mkdirs(); //create folders where write files 
final File file = new File(dir, "BlockForTest.txt");