Hi, I am trying to load videos from my emulated sdcard into my implemented GridView, it worked fine before, when I used the GridView example from Google...but now I get a Force close error when I try to open the app.
The entire app works (or rather should work) like this a TabView is launched that includes 2 tabs (GalleryView.java and main.xml), each tab loads a GridView (EditGalleryView.java and ShareGalleryView.java). Before I tried loading videos into the gridView I simply used the GridView example as starting point. Now on basis of this example I am trying to load videos into my GridView from the sdcard, which apparently seems to cause a Force Close Error. If someone could help me find the problem that's causing this, it would be great because I really don't know what's wrong now ... Thanks in Advance Here is the code I use: The Manifest.xml: <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"; package="com.mobilevideoeditor.moved" android:versionCode="1" android:versionName="1.0"> <application android:icon="@drawable/icon" android:label="@string/ app_name"> <activity android:name=".EditGalleryView" android:label="@string/app_name" android:theme="@android:style/ Theme.NoTitleBar"> <intent-filter> <action android:name="android.intent.action.PICK"/ > </intent-filter> </activity> <activity android:name=".ShareGalleryView" android:label="@string/app_name" android:theme="@android:style/ Theme.NoTitleBar"> <intent-filter > <action android:name="android.intent.action.SEND"/> </intent-filter> </activity> <activity android:name=".GalleryView" android:label="@string/app_name" android:theme="@android:style/ Theme.NoTitleBar"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/> </manifest> The GalleryView.java: package com.mobilevideoeditor.moved; import android.app.TabActivity; import android.content.Intent; import android.content.res.Resources; import android.os.Bundle; import android.widget.TabHost; public class GalleryView extends TabActivity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Resources res = getResources(); // Resource object to get Drawables TabHost tabHost = getTabHost(); // The activity TabHost TabHost.TabSpec spec; // Reusable TabSpec for each tab Intent intent; // Reusable Intent for each tab // Create an Intent to launch an EditGallery for the tab (to be reused) intent = new Intent().setClass(this, EditGalleryView.class); // Initialize a TabSpec for each tab and add it to the TabHost spec = tabHost.newTabSpec("edit").setIndicator("Edit", res.getDrawable(R.layout.ic_tab_edit)) .setContent(intent); tabHost.addTab(spec); intent = new Intent().setClass(this, ShareGalleryView.class); spec = tabHost.newTabSpec("share").setIndicator("Share", res.getDrawable(R.layout.ic_tab_share)) .setContent(intent); tabHost.addTab(spec); tabHost.setCurrentTab(0); } } The EditGalleryView.java (which seems to cause my problem): package com.mobilevideoeditor.moved; import java.util.ArrayList; import android.app.Activity; import android.content.Context; import android.database.Cursor; import android.net.Uri; import android.os.Bundle; import android.provider.MediaStore; import android.util.Log; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.GridView; import android.widget.VideoView; public class EditGalleryView extends Activity { Uri[] vidUris; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.videogrid); GridView vGrid=(GridView) findViewById(R.id.vgrid); vGrid.setAdapter(new VideoAdapter(this)); Uri uri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI; Log.d("EditGalleryView", "uri:"+uri); String[] projection = { MediaStore.Video.Media.DESCRIPTION, MediaStore.Video.Media.DATA }; Cursor c = this.managedQuery(uri, projection, null, null, MediaStore.Video.Media.DATE_ADDED); Log.d("EditGalleryView", "vids available:" +c.getCount()); ArrayList<Uri> experimentVids = new ArrayList<Uri>(); if (c.getCount() != 0) { c.moveToFirst(); // experimentVids.add(Uri.parse(c.getString(1))); while (c.moveToNext()) { experimentVids.add(Uri.parse(c.getString(1))); } } Log.d("ClassName", "experimentVids.length:" +experimentVids.size()); if (experimentVids.size() != 0) { vidUris = new Uri[experimentVids.size()]; for (int i = 0; i < experimentVids.size(); i++) { vidUris[i] = experimentVids.get(i); } Log.d("EditGalleryView", "vidUris:"+vidUris.length); } } public class VideoAdapter extends BaseAdapter { private Context mContext; public VideoAdapter(Context c) { mContext = c; } public int getCount() { //return mThumbIds.length; return vidUris.length; } public Object getItem(int position) { //return null; return position; } public long getItemId(int position) { //return 0; return position; } // create a new ImageView for each item referenced by the Adapter public View getView(int position, View convertView, ViewGroup parent) { VideoView videoView; if (convertView == null) { // if it's not recycled, initialize some attributes videoView = new VideoView(mContext); videoView.setVideoURI(vidUris[position]); videoView.setLayoutParams(new GridView.LayoutParams(85, 85)); // videoView.setScaleType(ImageView.ScaleType.CENTER_CROP); videoView.setPadding(8, 8, 8, 8); } else { videoView = (VideoView) convertView; } // imageView.setImageResource(mThumbIds[position]); return videoView; } And this is my LogCat Error Output: 07-16 19:40:45.074: ERROR/AndroidRuntime(225): Uncaught handler: thread main exiting due to uncaught exception 07-16 19:40:45.124: ERROR/AndroidRuntime(225): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.mobilevideoeditor.moved/ com.mobilevideoeditor.moved.GalleryView}: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.mobilevideoeditor.moved/ com.mobilevideoeditor.moved.EditGalleryView}: java.lang.NullPointerException 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java: 2496) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java: 2512) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at android.app.ActivityThread.access$2200(ActivityThread.java:119) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at android.os.Handler.dispatchMessage(Handler.java:99) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at android.os.Looper.loop(Looper.java:123) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at android.app.ActivityThread.main(ActivityThread.java:4363) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at java.lang.reflect.Method.invokeNative(Native Method) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at java.lang.reflect.Method.invoke(Method.java:521) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at com.android.internal.os.ZygoteInit $MethodAndArgsCaller.run(ZygoteInit.java:860) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at dalvik.system.NativeStart.main(Native Method) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): Caused by: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.mobilevideoeditor.moved/ com.mobilevideoeditor.moved.EditGalleryView}: java.lang.NullPointerException 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java: 2496) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at android.app.ActivityThread.startActivityNow(ActivityThread.java:2335) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at android.app.LocalActivityManager.moveToState(LocalActivityManager.java: 127) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at android.app.LocalActivityManager.startActivity(LocalActivityManager.java: 339) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at android.widget.TabHost $IntentContentStrategy.getContentView(TabHost.java:648) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at android.widget.TabHost.setCurrentTab(TabHost.java:320) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at android.widget.TabHost.addTab(TabHost.java:213) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at com.mobilevideoeditor.moved.GalleryView.onCreate(GalleryView.java:28) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java: 1047) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java: 2459) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): ... 11 more 07-16 19:40:45.124: ERROR/AndroidRuntime(225): Caused by: java.lang.NullPointerException 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at com.mobilevideoeditor.moved.EditGalleryView $VideoAdapter.getCount(EditGalleryView.java:73) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at android.widget.GridView.setAdapter(GridView.java:128) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at com.mobilevideoeditor.moved.EditGalleryView.onCreate(EditGalleryView.java: 28) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java: 1047) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java: 2459) 07-16 19:40:45.124: ERROR/AndroidRuntime(225): ... 20 more -- You received this message because you are subscribed to the Google Groups "Android Beginners" group. 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