当我启动Gallery Fragment时，我正在关闭Force。这不是Gallery中的代码，因为Ranghunandan告诉我那里出了什么问题。我想（但我不确定）它在ImageAdapter中。我还会发布LogCat
这是Java代码
import java.lang.ref.WeakReference;
import android.app.Activity;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import android.support.v4.util.LruCache;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
public class ImageAdapter extends BaseAdapter {
private static final String TAG = "ImageAdapter";
private Context mContext;
public static final Integer[] TATTOOS = {
R.drawable.tattoo1, R.drawable.tattoo2,
R.drawable.tattoo3, R.drawable.tattoo4,
R.drawable.tattoo5, R.drawable.tattoo6,
R.drawable.tattoo7, R.drawable.tattoo8,
R.drawable.tattoo9, R.drawable.tattoo10,
/* R.drawable.tattoo11, R.drawable.tattoo12,
R.drawable.tattoo13, R.drawable.tattoo14,
R.drawable.tattoo15, R.drawable.tattoo16,
R.drawable.tattoo17, R.drawable.tattoo18,
R.drawable.tattoo19, R.drawable.tattoo20,
R.drawable.tattoo21, R.drawable.tattoo22,
R.drawable.tattoo23, R.drawable.tattoo24,
R.drawable.tattoo25, R.drawable.tattoo26,
R.drawable.tattoo27, R.drawable.tattoo28,
R.drawable.tattoo29, R.drawable.tattoo30,
R.drawable.tattoo31, R.drawable.tattoo32,
R.drawable.tattoo33, R.drawable.tattoo34,
R.drawable.tattoo35, R.drawable.tattoo36,
R.drawable.tattoo37, R.drawable.tattoo38,
R.drawable.tattoo39, R.drawable.tattoo40,
R.drawable.tattoo41, R.drawable.tattoo42,
R.drawable.tattoo43, R.drawable.tattoo44,
R.drawable.tattoo45, R.drawable.tattoo46,
R.drawable.tattoo47, R.drawable.tattoo48,
R.drawable.tattoo49, R.drawable.tattoo50,
R.drawable.tattoo51, R.drawable.tattoo52,
R.drawable.tattoo53, R.drawable.tattoo54,
R.drawable.tattoo55, R.drawable.tattoo56,
R.drawable.tattoo57, R.drawable.tattoo58,
R.drawable.tattoo59, R.drawable.tattoo60,
R.drawable.tattoo61, R.drawable.tattoo62,
R.drawable.tattoo63, R.drawable.tattoo64,
R.drawable.tattoo65, R.drawable.tattoo66,
R.drawable.tattoo67, R.drawable.tattoo68,
R.drawable.tattoo69, R.drawable.tattoo70,
R.drawable.tattoo71, R.drawable.tattoo72,
R.drawable.tattoo73, R.drawable.tattoo74,
R.drawable.tattoo75, R.drawable.tattoo76,
R.drawable.tattoo77, R.drawable.tattoo78,
R.drawable.tattoo79, R.drawable.tattoo80,
R.drawable.tattoo81, R.drawable.tattoo82*/
};
private Bitmap mHolder = null;
private static final int CACHE_SIZE = 30 * 1024 * 1024; // 8 MiB cache
/** Cache to store all decoded images */
private LruCache<Integer, Bitmap> mBitmapsCache = new LruCache<Integer, Bitmap>(CACHE_SIZE) {
@Override
protected int sizeOf(final Integer key, final Bitmap value) {
return value.getByteCount();
}
@Override
protected void entryRemoved(final boolean evicted, final Integer key, final Bitmap oldValue, final Bitmap newValue) {
if (!oldValue.equals(mHolder)) {
oldValue.recycle();
}
}
};
// Constructor
public ImageAdapter(Context c){
mContext = c;
mHolder = BitmapFactory.decodeResource(c.getResources(), R.drawable.ic_launcher, null);
}
@Override
public int getCount() {
return TATTOOS.length;
}
@Override
public Object getItem(int position) {
return TATTOOS[position];
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
//This actually is a bad solution, because every time convertView is reused, you will still initialize new ImageView, which is wrong
//ImageView imageView = new ImageView(this.mContext);
//new BitmapWorkerTask(imageView).execute(Tattoos[position]);
//return imageView;
//Better solution
ImageView imageView;
if (convertView == null) {
imageView = new ImageView(this.mContext);
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setLayoutParams(new GridView.LayoutParams(280, 280));
} else {
imageView = (ImageView) convertView;
//re-use ImageView that already exists in memory
}
final Bitmap itemBitmap = mBitmapsCache.get(TATTOOS[position]);
if (itemBitmap == null || itemBitmap.isRecycled()) {
Log.e(TAG, position + " is missed, launch decode for " + TATTOOS[position]);
imageView.setImageBitmap(mHolder);
mBitmapsCache.put(TATTOOS[position], mHolder);
new BitmapWorkerTask(mBitmapsCache, mContext.getResources(), this).execute(TATTOOS[position]);
} else {
Log.e(TAG, position + " is here for " + TATTOOS[position]);
imageView.setImageBitmap(itemBitmap);
}
return imageView;
}
/** AsyncTask for decoding images from resources */
static class BitmapWorkerTask extends AsyncTask<Integer, Void, Bitmap> {
private int data = 0;
private final LruCache<Integer, Bitmap> mCache;
private final Resources mRes;
private final BaseAdapter mAdapter;
public BitmapWorkerTask(LruCache<Integer, Bitmap> cache, Resources res, BaseAdapter adapter) {
// nothing to do here
mCache = cache;
mRes = res;
mAdapter = adapter;
}
// Decode image in background.
@Override
protected Bitmap doInBackground(Integer... params) {
data = params[0];
return decodeSampledBitmapFromResource(mRes, data, 300, 300);
}
// Once complete, see if ImageView is still around and set bitmap.
@Override
protected void onPostExecute(Bitmap bitmap) {
mCache.put(data, bitmap);
mAdapter.notifyDataSetChanged();
}
}
public static Bitmap decodeSampledBitmapFromResource(Resources res, int resId,
int reqWidth, int reqHeight) {
// First decode with inJustDecodeBounds=true to check dimensions
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeResource(res, resId, options);
// Calculate inSampleSize
options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
// Decode bitmap with inSampleSize set
options.inJustDecodeBounds = false;
options.outHeight = 300;
options.outWidth = 300;
return BitmapFactory.decodeResource(res, resId, options);
}
public static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) {
// Raw height and width of image
final int height = options.outHeight;
final int width = options.outWidth;
int inSampleSize = 1;
if (height > reqHeight || width > reqWidth) {
// Calculate ratios of height and width to requested height and width
final int heightRatio = Math.round((float) height / (float) reqHeight);
final int widthRatio = Math.round((float) width / (float) reqWidth);
// Choose the smallest ratio as inSampleSize value, this will guarantee
// a final image with both dimensions larger than or equal to the
// requested height and width.
inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio;
}
return inSampleSize;
}
}
这是LogCat
12-25 13:55:13.722: D/AndroidRuntime(7065): Shutting down VM
12-25 13:55:13.722: W/dalvikvm(7065): threadid=1: thread exiting with uncaught exception (group=0x419c5b90)
12-25 13:55:13.752: D/dalvikvm(7065): GC_FOR_ALLOC freed 179K, 3% free 9923K/10136K, paused 20ms, total 20ms
12-25 13:55:13.752: E/AndroidRuntime(7065): FATAL EXCEPTION: main
12-25 13:55:13.752: E/AndroidRuntime(7065): Process: info.androidhive.slidingmenu, PID: 7065
12-25 13:55:13.752: E/AndroidRuntime(7065): android.util.SuperNotCalledException: Fragment GalleryActivity{4238f5d8 #0 id=0x7f0a0008} did not call through to super.onActivityCreated()
12-25 13:55:13.752: E/AndroidRuntime(7065): at android.app.Fragment.performActivityCreated(Fragment.java:1710)
12-25 13:55:13.752: E/AndroidRuntime(7065): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:908)
12-25 13:55:13.752: E/AndroidRuntime(7065): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1062)
12-25 13:55:13.752: E/AndroidRuntime(7065): at android.app.BackStackRecord.run(BackStackRecord.java:684)
12-25 13:55:13.752: E/AndroidRuntime(7065): at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1447)
12-25 13:55:13.752: E/AndroidRuntime(7065): at android.app.FragmentManagerImpl$1.run(FragmentManager.java:443)
12-25 13:55:13.752: E/AndroidRuntime(7065): at android.os.Handler.handleCallback(Handler.java:733)
12-25 13:55:13.752: E/AndroidRuntime(7065): at android.os.Handler.dispatchMessage(Handler.java:95)
12-25 13:55:13.752: E/AndroidRuntime(7065): at android.os.Looper.loop(Looper.java:137)
12-25 13:55:13.752: E/AndroidRuntime(7065): at android.app.ActivityThread.main(ActivityThread.java:4998)
12-25 13:55:13.752: E/AndroidRuntime(7065): at java.lang.reflect.Method.invokeNative(Native Method)
12-25 13:55:13.752: E/AndroidRuntime(7065): at java.lang.reflect.Method.invoke(Method.java:515)
12-25 13:55:13.752: E/AndroidRuntime(7065): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:777)
12-25 13:55:13.752: E/AndroidRuntime(7065): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593)
12-25 13:55:13.752: E/AndroidRuntime(7065): at dalvik.system.NativeStart.main(Native Method)
12-25 14:00:13.902: I/Process(7065): Sending signal. PID: 7065 SIG: 9
答案 0 :(得分：2)
logcat告诉您，您没有调用超级onActivityCreated();错误不在您的适配器中。在堆栈跟踪中查看此行：
android.util.SuperNotCalledException: Fragment GalleryActivity{4238f5d8 #0 id=0x7f0a0008} did not call through to super.onActivityCreated()
onActivityCreated方法需要此调用，应如下所示：
@Override
onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
// do something here
}