我正在尝试使用添加子活动
TabGroupActivity parentActivity = (TabGroupActivity) getParent();
parentActivity.startChildActivity("AlbumDetailsLatest2", i);
但似乎我遇到了一个错误，我无法理解似乎是什么问题。
这是我的最新专辑活动课程：
public class LatestAlbums extends FragmentActivity {
// widgets
private ListView list;
private ImageView back, clear;
private EditText find;
// JSON Node names
private static final String TAG_ALBUMS = "albums";
private static final String TAG_ID = "id";
private static final String TAG_NAME = "name";
private static final String TAG_SINGER = "singer";
private static final String TAG_GENRE = "genre";
private static final String TAG_MIX = "mix";
private static final String TAG_THUMB = "thumb";
private static final String TAG_SONGS = "songs";
private static final String TAG_SONG_TITLE = "song";
private static final String TAG_SONG_ARTIST = "artist";
private static final String TAG_SONG_MP3 = "mp3";
private static final String TAG_SONG_MP4 = "mp4";
private static final String TAG_SONG_THUMB = "thumb";
private Parcelable state;
private ProgressDialog pdialog;
// albums JSONArray
private JSONArray albums;
private JSONArray sngs;
// arrayLists for creating objects
private ArrayList<Albums> albumsArray;
private ArrayList<Songs> songsArray;
private AlbumLazyAdapter adapter;
private ViewPager pager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.latest_albums);
albumsArray = new ArrayList<Albums>();
songsArray = new ArrayList<Songs>();
try {
loadJSON();
} catch (JSONException e) {
e.printStackTrace();
}
}
private void initWidgets() {
list = (ListView) findViewById(R.id.listView1);
back = (ImageView) findViewById(R.id.latest_back_img);
clear = (ImageView) findViewById(R.id.latest_search_clear);
pager = (ViewPager) findViewById(R.id.my_slider);
clear.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
find.setText("");
find.clearFocus();
find.clearComposingText();
clear.setVisibility(View.INVISIBLE);
}
});
find = (EditText) findViewById(R.id.latest_search_et);
back.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
finish();
}
});
adapter = new AlbumLazyAdapter(this, albumsArray);
// set list view adapter
list.setAdapter(adapter);
// setting find edit text searching method
find.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before,
int count) {
clear.setVisibility(View.VISIBLE);
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
@Override
public void afterTextChanged(Editable s) {
final ArrayList<Albums> temp = new ArrayList<Albums>();
for (int i = 0; i < albumsArray.size(); i++) {
if (albumsArray.get(i).getTAG_NAME().toLowerCase()
.contains(find.getText().toString().toLowerCase())
|| albumsArray.get(i).getTAG_SINGER().toLowerCase()
.contains(find.getText().toString())) {
temp.add(albumsArray.get(i));
}
}
AlbumLazyAdapter mAdapter = new AlbumLazyAdapter(
LatestAlbums.this, temp);
list.setAdapter(mAdapter);
mAdapter.notifyDataSetChanged();
list.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View v,
int position, long arg3) {
Intent i = new Intent();
i.putExtra("albums", temp.get(position));
i.putExtra("songs", temp.get(position).getSongs());
i.putExtra("title", temp.get(position).getTAG_NAME());
i.putExtra("genre", temp.get(position).getTAG_GENRE());
i.putExtra("thumb", temp.get(position).getTAG_THUMB());
i.setClass(LatestAlbums.this, AlbumDetails.class);
TabGroupActivity parentActivity = (TabGroupActivity) getParent();
parentActivity.startChildActivity("AlbumDetailsLatest1", i);
}
});
}
});
list.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View v,
int position, long arg3) {
Intent i = new Intent();
i.putExtra("albums", albumsArray.get(position));
i.putExtra("songs", albumsArray.get(position).getSongs());
i.putExtra("title", albumsArray.get(position).getTAG_NAME());
i.putExtra("genre", albumsArray.get(position).getTAG_GENRE());
i.putExtra("thumb", albumsArray.get(position).getTAG_THUMB());
i.setClass(LatestAlbums.this, AlbumDetails.class);
TabGroupActivity parentActivity = (TabGroupActivity) getParent();
parentActivity.startChildActivity("AlbumDetailsLatest2", i);
}
});
}
@Override
protected void onResume() {
super.onResume();
initWidgets();
}
// load json from server via asyncTask
public void loadJSON() throws JSONException {
AsyncTask<Void, Void, Void> task = new AsyncTask<Void, Void, Void>() {
@Override
protected void onPreExecute() {
super.onPreExecute();
initWidgets();
pdialog = new ProgressDialog(LatestAlbums.this);
pdialog.setMessage(getString(R.string.loading_));
pdialog.show();
pdialog.setCancelable(true);
pdialog.setCanceledOnTouchOutside(false);
}
@Override
protected Void doInBackground(Void... params) {
if (isOnline()) {
JSONObject json = new JSONParser()
.getJSONFromUrl(getString(R.string.json_URL));
JSONObject theJSON;
try {
// Getting Array of albums
theJSON = json.getJSONObject("json");
albums = theJSON.getJSONArray(TAG_ALBUMS);
// looping through All albums
for (int i = 0; i < albums.length(); i++) {
JSONObject c = albums.getJSONObject(i);
String album_id = c.getString(TAG_ID);
String album_name = c.getString(TAG_NAME);
String album_singer = c.getString(TAG_SINGER);
String album_mix = c.getString(TAG_MIX);
String album_genre = c.getString(TAG_GENRE);
String album_thumb = getString(R.string.cover_URL)
+ c.getString(TAG_THUMB);
albumsArray.add(new Albums(album_id, album_name,
album_singer, album_genre, album_mix,
album_thumb, songsArray));
sngs = c.getJSONArray(TAG_SONGS);
// getting songs for the album
songsArray = new ArrayList<Songs>();
for (int j = 0; j < sngs.length(); j++) {
JSONObject songs = sngs.getJSONObject(j);
String song_artist = songs
.getString(TAG_SONG_ARTIST);
String song_mp3 = songs.getString(TAG_SONG_MP3);
String song_mp4 = songs.getString(TAG_SONG_MP4);
String song_thumb = songs
.getString(TAG_SONG_THUMB);
String song_title = songs
.getString(TAG_SONG_TITLE);
songsArray.add(new Songs(song_title,
song_artist,
"http://someurl.com/musica/songs_with/"
+ song_mp3, song_mp4,
getString(R.string.cover_URL)
+ song_thumb));
}
albumsArray.get(i).setSongs(songsArray);
}
} catch (JSONException e) {
e.printStackTrace();
}
} else {
RelativeLayout relativeLayout = (RelativeLayout) findViewById(R.id.latest_relativeLayout);
TextView noCon = new TextView(LatestAlbums.this);
noCon.setText(R.string.not_connected_to_internet);
noCon.setPadding(100, 200, 100, 0);
noCon.setTextSize(22);
noCon.setTextColor(Color.WHITE);
relativeLayout.addView(noCon);
ImageView left = (ImageView) findViewById(R.id.latest_left);
left.setVisibility(View.GONE);
ImageView right = (ImageView) findViewById(R.id.latest_right);
right.setVisibility(View.GONE);
pager.setVisibility(View.GONE);
find.setVisibility(View.GONE);
}
return null;
}
@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
pdialog.dismiss();
FragmentManager fm = getSupportFragmentManager();
MyFragmentPagerAdapter pagerAdapter = new MyFragmentPagerAdapter(
fm, albumsArray);
pager.setAdapter(pagerAdapter);
adapter.notifyDataSetChanged();
}
};
task.execute();
}
public void saveState() {
state = list.onSaveInstanceState();
}
public boolean isOnline() {
ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netInfo = cm.getActiveNetworkInfo();
if (netInfo != null && netInfo.isConnectedOrConnecting()) {
return true;
}
return false;
}
public void reload() {
saveState();
list.setAdapter(adapter);
list.onRestoreInstanceState(state);
}
}
这是 logCat 输出：
04-11 11:48:39.057: E/AndroidRuntime(3573): FATAL EXCEPTION: main
04-11 11:48:39.057: E/AndroidRuntime(3573): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.myapp/com.myapp.activities.TabLayouts}: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.myapp/com.myapp.activities.LatestGroup}: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.myapp/com.myapp.activities.LatestAlbums}: android.view.WindowManager$BadTokenException: Unable to add window -- token android.app.LocalActivityManager$LocalActivityRecord@4198bfe8 is not valid; is your activity running?
04-11 11:48:39.057: E/AndroidRuntime(3573): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1972)
04-11 11:48:39.057: E/AndroidRuntime(3573): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1997)
04-11 11:48:39.057: E/AndroidRuntime(3573): at android.app.ActivityThread.access$600(ActivityThread.java:124)
04-11 11:48:39.057: E/AndroidRuntime(3573): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1148)
04-11 11:48:39.057: E/AndroidRuntime(3573): at android.os.Handler.dispatchMessage(Handler.java:99)
04-11 11:48:39.057: E/AndroidRuntime(3573): at android.os.Looper.loop(Looper.java:137)
04-11 11:48:39.057: E/AndroidRuntime(3573): at android.app.ActivityThread.main(ActivityThread.java:4440)
04-11 11:48:39.057: E/AndroidRuntime(3573): at java.lang.reflect.Method.invokeNative(Native Method)
04-11 11:48:39.057: E/AndroidRuntime(3573): at java.lang.reflect.Method.invoke(Method.java:511)
04-11 11:48:39.057: E/AndroidRuntime(3573): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:787)
04-11 11:48:39.057: E/AndroidRuntime(3573): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:554)
04-11 11:48:39.057: E/AndroidRuntime(3573): at dalvik.system.NativeStart.main(Native Method)
04-11 11:48:39.057: E/AndroidRuntime(3573): Caused by: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.myapp/com.myapp.activities.LatestGroup}: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.myapp/com.myapp.activities.LatestAlbums}: android.view.WindowManager$BadTokenException: Unable to add window -- token android.app.LocalActivityManager$LocalActivityRecord@4198bfe8 is not valid; is your activity running?
04-11 11:48:39.057: E/AndroidRuntime(3573): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1972)
04-11 11:48:39.057: E/AndroidRuntime(3573): at android.app.ActivityThread.startActivityNow(ActivityThread.java:1813)
04-11 11:48:39.057: E/AndroidRuntime(3573): at android.app.LocalActivityManager.moveToState(LocalActivityManager.java:135)
04-11 11:48:39.057: E/AndroidRuntime(3573): at android.app.LocalActivityManager.startActivity(LocalActivityManager.java:347)
04-11 11:48:39.057: E/AndroidRuntime(3573): at android.widget.TabHost$IntentContentStrategy.getContentView(TabHost.java:682)
04-11 11:48:39.057: E/AndroidRuntime(3573): at android.widget.TabHost.setCurrentTab(TabHost.java:346)
04-11 11:48:39.057: E/AndroidRuntime(3573): at android.widget.TabHost.addTab(TabHost.java:236)
04-11 11:48:39.057: E/AndroidRuntime(3573): at com.myapp.activities.TabLayouts.addTab(TabLayouts.java:52)
04-11 11:48:39.057: E/AndroidRuntime(3573): at com.myapp.activities.TabLayouts.setTabs(TabLayouts.java:32)
04-11 11:48:39.057: E/AndroidRuntime(3573): at com.myapp.activities.TabLayouts.onCreate(TabLayouts.java:25)
04-11 11:48:39.057: E/AndroidRuntime(3573): at android.app.Activity.performCreate(Activity.java:4465)
04-11 11:48:39.057: E/AndroidRuntime(3573): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
04-11 11:48:39.057: E/AndroidRuntime(3573): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1936)
04-11 11:48:39.057: E/AndroidRuntime(3573): ... 11 more
04-11 11:48:39.057: E/AndroidRuntime(3573): Caused by: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.myapp/myapp.activities.LatestAlbums}: android.view.WindowManager$BadTokenException: Unable to add window -- token android.app.LocalActivityManager$LocalActivityRecord@4198bfe8 is not valid; is your activity running?
04-11 11:48:39.057: E/AndroidRuntime(3573): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1972)
04-11 11:48:39.057: E/AndroidRuntime(3573): at android.app.ActivityThread.startActivityNow(ActivityThread.java:1813)
04-11 11:48:39.057: E/AndroidRuntime(3573): at android.app.LocalActivityManager.moveToState(LocalActivityManager.java:135)
04-11 11:48:39.057: E/AndroidRuntime(3573): at android.app.LocalActivityManager.startActivity(LocalActivityManager.java:347)
04-11 11:48:39.057: E/AndroidRuntime(3573): at com.myapp.activities.TabGroupActivity.startChildActivity(TabGroupActivity.java:56)
04-11 11:48:39.057: E/AndroidRuntime(3573): at com.myapp.activities.LatestGroup.onCreate(LatestGroup.java:10)
04-11 11:48:39.057: E/AndroidRuntime(3573): at android.app.Activity.performCreate(Activity.java:4465)
04-11 11:48:39.057: E/AndroidRuntime(3573): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
04-11 11:48:39.057: E/AndroidRuntime(3573): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1936)
04-11 11:48:39.057: E/AndroidRuntime(3573): ... 23 more
04-11 11:48:39.057: E/AndroidRuntime(3573): Caused by: android.view.WindowManager$BadTokenExcep
很抱歉有很多代码，但真的不知道是什么导致了这个问题