所以我将slidingmenu(jfeinstein10) 库添加到我的项目中并且菜单工作。我遇到的问题是基于我的应用扩展 ListActivity。
我已经看到了一些关于此的问题，并且大多数建议扩展到 Fragment 以使 Fragments 为菜单工作。我想知道是否有办法不使用 Fragments 来使菜单列表正常工作。
每次我移动到 SlidingFragmentActivity 或任何其他 Fragment Activity 时，onListItemClick 和其他方法都会开始中断。
下面是我的代码：
public class MainListActivity extends ListActivity {
public static final int NUMBER_OF_POSTS = 20;
public static final String TAG = MainListActivity.class.getSimpleName();
protected JSONObject mBlogData;
protected ProgressBar mProgressBar;
private SlidingMenu menu;
static final String KEY_TITLE = "title";
static final String KEY_AUTHOR = "author";
static final String KEY_IMAGE = "image";
ListView list;
LazyAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//setBehindContentView(R.layout.menu_frame);
mProgressBar = (ProgressBar) findViewById(R.id.progressBar1);
menu = new SlidingMenu(this);
menu.setMode(SlidingMenu.LEFT);
menu.setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN);
menu.setShadowWidth(5);
menu.setFadeDegree(0.35f);
menu.attachToActivity(this, SlidingMenu.SLIDING_CONTENT);
menu.setBehindWidth(R.dimen.shadow_width);
menu.setShadowDrawable(R.drawable.shadow);
menu.setBehindOffsetRes(R.dimen.slidingmenu_offset);
menu.setMenu(R.layout.menu_frame);
//getFragmentManager().beginTransaction().replace(R.id.menu_frame, new MenuFragment()).commit();
if(isNetworkAvailable()){
GetBlogPostsTask getBlogPostsTask = new GetBlogPostsTask();
mProgressBar.setVisibility(View.VISIBLE);
getBlogPostsTask.execute();
}else{
Toast.makeText(this, "Network is unavailable", Toast.LENGTH_LONG).show();
}
}
@Override
protected void onListItemClick(ListView l, View v, int position, long id){
super.onListItemClick(l, v, position, id);
try{
JSONArray jsonPosts = mBlogData.getJSONArray("items");
JSONObject jsonPost = jsonPosts.getJSONObject(position);
String blogSummary = jsonPost.getString("summary");
String blogUrl = jsonPost.getString("bitly");
Intent intent = new Intent(this, BlogWebViewActivity.class);
intent.setData(Uri.parse(blogSummary));
intent.putExtra("mUrl",blogUrl);
startActivity(intent);
}catch(JSONException e){
logException(e);
}
}
private void logException(Exception e) {
Log.e(TAG, "Exception caught!", e);
}
private boolean isNetworkAvailable() {
ConnectivityManager manager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = manager.getActiveNetworkInfo();
boolean isAvailable = false;
if(networkInfo != null && networkInfo.isConnected()){
isAvailable = true;
}
return isAvailable;
}
public void handleBlogResponse() {
mProgressBar.setVisibility(View.INVISIBLE);
if(mBlogData == null){
updateDisplayForError();
}else{
try {
JSONArray jsonPosts = mBlogData.getJSONArray("items");
ArrayList<HashMap<String,String>> blogPosts = new ArrayList<HashMap<String,String>>();
for (int i=0;i<jsonPosts.length();i++){
JSONObject post = jsonPosts.getJSONObject(i);
String title = post.getString(KEY_TITLE);
title = Html.fromHtml(title).toString();
String tag = post.getString(KEY_AUTHOR);
tag = Html.fromHtml(tag).toString();
String image = post.getString(KEY_IMAGE);
image = Html.fromHtml(image).toString();
HashMap<String, String> blogPost = new HashMap<String,String>();
blogPost.put(KEY_TITLE, title);
blogPost.put(KEY_AUTHOR, tag);;
blogPost.put(KEY_IMAGE, image);
blogPosts.add(blogPost);
}
list=getListView();
LazyAdapter adapter = new LazyAdapter(this, blogPosts);
list.setAdapter(adapter);
} catch (JSONException e) {
logException(e);
}
}
}
private void updateDisplayForError() {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle(getString(R.string.error_title));
builder.setMessage(getString(R.string.error_message));
builder.setPositiveButton(android.R.string.ok,null);
AlertDialog dialog = builder.create();
dialog.show();
TextView emptyTextView = (TextView) getListView().getEmptyView();
emptyTextView.setText(getString(R.string.no_items));
}
private class GetBlogPostsTask extends AsyncTask<Object, Void, JSONObject>{
@Override
protected JSONObject doInBackground(Object... params) {
int responseCode = -1;
JSONObject jsonResponse = null;
StringBuilder builder = new StringBuilder();
HttpClient client = new DefaultHttpClient();
HttpGet httpget = new HttpGet("http://www.domain.com/app_json.js");
try {
HttpResponse response = client.execute(httpget);
StatusLine statusLine = response.getStatusLine();
responseCode = statusLine.getStatusCode();
if(responseCode == HttpURLConnection.HTTP_OK){
HttpEntity entity = response.getEntity();
InputStream content = entity.getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(content));
String line;
while((line = reader.readLine()) != null){
builder.append(line);
}
jsonResponse = new JSONObject(builder.toString());
}else{
Log.i(TAG, "HTTP Failed: "+responseCode);
}
} catch (MalformedURLException e) {
logException(e);
} catch (IOException e) {
logException(e);
}
catch(Exception e){
logException(e);
}
return jsonResponse;
}
@Override
protected void onPostExecute(JSONObject result){
mBlogData = result;
handleBlogResponse();
}
}
@Override
public void onBackPressed() {
if (menu.isMenuShowing()) {
menu.showContent();
} else {
super.onBackPressed();
}
}
}
我将菜单项作为字符串数组存储在 /values/array.xml 中。
我也设置了一个片段，但不知道如何在不从 ListActivity 扩展到片段的情况下访问它。
下面是我基于来自 github 的示例片段的片段：
public class MenuFragment extends ListFragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.menu_list, null);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
String[] colors = getResources().getStringArray(R.array.menu_items);
ArrayAdapter<String> colorAdapter = new ArrayAdapter<String>(getActivity(),
android.R.layout.simple_list_item_1, android.R.id.text1, colors);
setListAdapter(colorAdapter);
}
@Override
public void onListItemClick(ListView lv, View v, int position, long id) {
Fragment newContent = null;
switch (position) {
case 0:
//newContent = new ColorFragment(R.color.red);
break;
case 1:
//newContent = new ColorFragment(R.color.green);
break;
case 2:
//newContent = new ColorFragment(R.color.blue);
break;
case 3:
//newContent = new ColorFragment(android.R.color.white);
break;
case 4:
//newContent = new ColorFragment(android.R.color.black);
break;
}
if (newContent != null)
switchFragment(newContent);
}
// the meat of switching the above fragment
private void switchFragment(Fragment fragment) {
if (getActivity() == null)
return;
}
}
谢谢