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グリッドビュー内の特定のフォルダからの画像を表示するフラグメントを使用しています... Lollipop &プレLollipopで、それはうまく動作しますが、MまたはM +デバイスでは、「取得しようとしましたここでは同様にgetCount（）メソッドでは、私のアダプタでのNULLの配列」の長さ...getCount（）でNull配列の長さを取得しようとしました。
私が間違っているつもりですどこ私にはわからない...
は断片ダウンロードのために私のコードです -
public class Downloaded extends Fragment{
// Declare variables
private String[] FilePathStrings;
private String[] FileNameStrings;
private File[] listFile;
GridView grid;
GridViewAdapter adapter;
File file;
TextView empty;
@Override
public void onActivityCreated(Bundle
savedInstanceState) {
super.onActivityCreated(savedInstanceState);
getActivity().setTitle("Saved");
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState)
{
//Inflating the Layout
View rootView = inflater.inflate(R.layout.gridview_main, container, false);
// Check for SD Card
if (!Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)) {
Toast.makeText(getActivity(), "Error! No SDCARD Found!", Toast.LENGTH_LONG)
.show();
} else {
// Locate the image folder in your SD Card
file = new File(Environment.getExternalStorageDirectory()
+ File.separator + "Sample");
// Create a new folder if no folder named SDImageTutorial exist
file.mkdirs();
}
if (file.isDirectory()) {
listFile = file.listFiles();
// Create a String array for FilePathStrings
FilePathStrings = new String[listFile.length];
// Create a String array for FileNameStrings
FileNameStrings = new String[listFile.length];
for (int i = 0; i < listFile.length; i++) {
// Get the path of the image file
FilePathStrings[i] = listFile[i].getAbsolutePath();
// Get the name image file
FileNameStrings[i] = listFile[i].getName();
}
}
// Locate the GridView in gridview_main.xml
grid = (GridView) rootView.findViewById(R.id.gridview);
empty = (TextView) rootView.findViewById(R.id.empty);
empty.setText("You haven't saved any Pic yet...!");
grid.setEmptyView(empty);
// Pass String arrays to LazyAdapter Class
adapter = new GridViewAdapter(getActivity(), FilePathStrings, FileNameStrings);
// Set the LazyAdapter to the GridView
grid.setAdapter(adapter);
// Capture gridview item click
grid.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Intent i = new Intent(getActivity(), ViewImage.class);
// Pass String arrays FilePathStrings
i.putExtra("filepath", FilePathStrings);
// Pass String arrays FileNameStrings
i.putExtra("filename", FileNameStrings);
// Pass click position
i.putExtra("position", position);
startActivity(i);
}
});
return rootView;
}
}
ここは私のアダプターです -
public class GridViewAdapter extends BaseAdapter {
// Declare variables
private Activity activity;
private String[] filepath;
private String[] filename;
Context mContext;
private static LayoutInflater inflater = null;
public GridViewAdapter(Activity a, String[] fpath, String[] fname) {
activity = a;
this.filepath = fpath;
filename = fname;
inflater = (LayoutInflater) activity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
public int getCount() {
return this.filepath.length;
// Getting a Crash here!
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
View vi = convertView;
if (convertView == null)
vi = inflater.inflate(R.layout.gridview_item, null);
// Locate the ImageView in gridview_item.xml
ImageView img = (ImageView) vi.findViewById(R.id.image);
// Set file name to the TextView followed by the position
TextView txt = (TextView) vi.findViewById(R.id.name);
// Decode the filepath with BitmapFactory followed by the position
// Set the decoded bitmap into ImageView
Glide.with(activity)
.load(filepath[position])
.into(img);
txt.setText(filename[position]);
return vi;
}
}