我有一个带有GridView的适配器作为Activity使用。现在我正在尝试将它放入Fragment中并进行转换，但它无法工作。当我在Activity中包含IconFragmentSystem时，我打开Activity时会强制关闭。
我知道Activity可以正常工作，因为我可以使用其他Fragment，所以我知道我的问题出现在这个文件中。
package com.designrifts.ultimatethemeui;
import com.designrifts.ultimatethemeui.R;
import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.*;
import java.util.ArrayList;
public class IconFragmentSystem extends Fragment implements AdapterView.OnItemClickListener{
private static final String RESULT_OK = null;
public Uri CONTENT_URI;
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.main, container, false);
super.onCreate(savedInstanceState);
int iconSize=getResources().getDimensionPixelSize(android.R.dimen.app_icon_size);
GridView gridview = (GridView) getActivity().findViewById(R.id.icon_grid);
gridview.setAdapter(new IconAdapter(this, iconSize));
gridview.setOnItemClickListener(this);
CONTENT_URI=Uri.parse("content://"+iconsProvider.class.getCanonicalName());
return view;
}
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
String icon=adapterView.getItemAtPosition(i).toString();
Intent result = new Intent(null, Uri.withAppendedPath(CONTENT_URI,icon));
setResult(RESULT_OK, result);
finish();
}
private void setResult(String resultOk, Intent result) {
// TODO Auto-generated method stub
}
private void finish() {
// TODO Auto-generated method stub
}
private class IconAdapter extends BaseAdapter{
private Context mContext;
private int mIconSize;
public IconAdapter(Context mContext, int iconsize) {
super();
this.mContext = mContext;
this.mIconSize = iconsize;
loadIcon();
}
public IconAdapter(IconFragmentSystem iconssystem, int iconSize) {
// TODO Auto-generated constructor stub
}
@Override
public int getCount() {
return mThumbs.size();
}
@Override
public Object getItem(int position) {
return mThumbs.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView;
if (convertView == null) {
imageView = new ImageView(mContext);
imageView.setLayoutParams(new GridView.LayoutParams(mIconSize, mIconSize));
} else {
imageView = (ImageView) convertView;
}
imageView.setImageResource(mThumbs.get(position));
return imageView;
}
private ArrayList<Integer> mThumbs;
////////////////////////////////////////////////
private void loadIcon() {
mThumbs = new ArrayList<Integer>();
final Resources resources = getResources();
final String packageName = getActivity().getApplication().getPackageName();
addIcon(resources, packageName, R.array.systemicons);
}
private void addIcon(Resources resources, String packageName, int list) {
final String[] extras = resources.getStringArray(list);
for (String extra : extras) {
int res = resources.getIdentifier(extra, "drawable", packageName);
if (res != 0) {
final int thumbRes = resources.getIdentifier(extra,"drawable", packageName);
if (thumbRes != 0) {
mThumbs.add(thumbRes);
}
}
}
}
}
}
我已经尝试了不同的方法来实现这个，但都失败了，真的需要帮助指引我正确的方向。
这是我的布局中的xml。
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<GridView
android:id="@+id/gridview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:columnWidth="90dp"
android:numColumns="auto_fit"
android:verticalSpacing="10dp"
android:horizontalSpacing="10dp"
android:stretchMode="columnWidth"
android:gravity="center"
/>
</RelativeLayout>