Android 如何防止在片段内重新创建/重新加载MapView?
我在应用程序中使用导航栏,每次我选择一个项目时,它都会加载一个片段 我可以用相同的文本字段和按钮保存片段的状态,但是有一个片段可以加载地图、添加标记、集群并执行Android 如何防止在片段内重新创建/重新加载MapView?,android,google-maps,android-fragments,google-maps-android-api-2,Android,Google Maps,Android Fragments,Google Maps Android Api 2,我在应用程序中使用导航栏,每次我选择一个项目时,它都会加载一个片段 我可以用相同的文本字段和按钮保存片段的状态,但是有一个片段可以加载地图、添加标记、集群并执行异步任务 每次我转到另一个菜单项并返回时,它都会再次重新加载所有内容,比如AsyncTask、Cluster和Markers。如何停止此片段以不再重新创建地图,并在其返回时保存状态: Udate 1:我更新了代码,但问题仍然存在 main活动: public class MainActivity extends AppCompatActi
异步任务
每次我转到另一个菜单项并返回时,它都会再次重新加载所有内容,比如AsyncTask、Cluster和Markers。如何停止此片段以不再重新创建地图,并在其返回时保存状态:
Udate 1:我更新了代码,但问题仍然存在
main活动:
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
NavigationView navigationView = null;
Toolbar toolbar = null;
GoogleMap nMap;
SparseArray<Fragment> myFragments;
JSONArray jArray;
private static final int ERROR_DIALOG_REQUEST = 9001;
public static final int ID_OF_BEACH = 5;
//initBeach test = new initBeach();
//JSONArray jsonArray = test.ExcuteLoad();
/**
* ATTENTION: This was auto-generated to implement the App Indexing API.
* See https://g.co/AppIndexing/AndroidStudio for more information.
*/
private GoogleApiClient client;
Fragment fragment;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
myFragments = new SparseArray<>();
//setTitle("");
setContentView(R.layout.activity_main);
if (servicesOK()) {
try {
jArray = new LoadJson().execute().get();
} catch (Exception e) {
e.printStackTrace();
}
} else {
setContentView(R.layout.activity_main);
}
//Set the fragment initially
FragmentTransaction fragmentTransaction =
getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.fragment_container, new MainFragment(jArray));
fragmentTransaction.addToBackStack("1");
fragmentTransaction.commit();
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
//noinspection ConstantConditions
getSupportActionBar().setDisplayShowTitleEnabled(false);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
navigationView = (NavigationView) findViewById(R.id.nav_view);
//How to change elements in the header programatically
navigationView.setNavigationItemSelectedListener(this);
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client = new GoogleApiClient.Builder(this).addApi(AppIndex.API).build();
navigationView.setItemIconTintList(null);
}
@Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
//noinspection SimplifiableIfStatement
return super.onOptionsItemSelected(item);
}
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_camara) {
fragment = myFragments.get(1);
// if fragment doesn't exist in myFragments, create one and add to it
if (fragment == null) {
fragment = new MainFragment(jArray);
myFragments.put(1, fragment);
}
FragmentTransaction fragmentTransaction =
getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.fragment_container, fragment);
fragmentTransaction.commit();
// Handle the camera actionn
} else if (id == R.id.nav_gallery) {
//Set the fragment initially
fragment = myFragments.get(2);
// if fragment doesn't exist in myFragments, create one and add to it
if (fragment == null) {
fragment = new GalleryFragment();
myFragments.put(2, fragment);
}
FragmentTransaction fragmentTransaction =
getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.fragment_container, fragment);
fragmentTransaction.commit();
} else if (id == R.id.nav_search) {
//Set the fragment initially
// Handle the camera action
} else if (id == R.id.nav_manage) {
// Handle the camera action
} else if (id == R.id.nav_share) {
} else if (id == R.id.nav_send) {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
public boolean servicesOK() {
int isAvailable = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
if (isAvailable == ConnectionResult.SUCCESS) {
return true;
} else if (GooglePlayServicesUtil.isUserRecoverableError(isAvailable)) {
Dialog dialog =
GooglePlayServicesUtil.getErrorDialog(isAvailable, this, ERROR_DIALOG_REQUEST);
dialog.show();
} else {
Toast.makeText(this, "Can't connect to mapping service", Toast.LENGTH_SHORT).show();
}
return false;
}
@Override
public void onStart() {
super.onStart();
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client.connect();
Action viewAction = Action.newAction(
Action.TYPE_VIEW, // TODO: choose an action type.
"Main Page", // TODO: Define a title for the content shown.
// TODO: If you have web page content that matches this app activity's content,
// make sure this auto-generated web page URL is correct.
// Otherwise, set the URL to null.
Uri.parse("http://host/path"),
// TODO: Make sure this auto-generated app URL is correct.
Uri.parse("android-app://com.compscitutorials.basigarcia.navigationdrawervideotutorial/http/host/path")
);
AppIndex.AppIndexApi.start(client, viewAction);
}
@Override
public void onStop() {
super.onStop();
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
Action viewAction = Action.newAction(
Action.TYPE_VIEW, // TODO: choose an action type.
"Main Page", // TODO: Define a title for the content shown.
// TODO: If you have web page content that matches this app activity's content,
// make sure this auto-generated web page URL is correct.
// Otherwise, set the URL to null.
Uri.parse("http://host/path"),
// TODO: Make sure this auto-generated app URL is correct.
Uri.parse("android-app://com.compscitutorials.basigarcia.navigationdrawervideotutorial/http/host/path")
);
AppIndex.AppIndexApi.end(client, viewAction);
client.disconnect();
}
//AsyincTask to load JSON
public class LoadJson extends AsyncTask<String, Void, JSONArray> {
String URLu = "SOME_JSON_URL";
@Override
protected JSONArray doInBackground(String... params) {
try {
URL url = new URL(URLu);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.connect();
InputStream stream = connection.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(stream));
StringBuffer buffer = new StringBuffer();
String line = "";
while ((line = reader.readLine()) != null) {
buffer.append(line);
}
String finalJson = buffer.toString();
JSONObject jsonObject = new JSONObject(finalJson);
JSONArray jsonArray = jsonObject.getJSONArray("marcadores");
return jsonArray;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
@Override
protected void onPostExecute(JSONArray result) {
super.onPostExecute(result);
}
@Override
protected void onPreExecute() {
super.onPreExecute();
}
}
}
public class MainFragment extends Fragment {
GoogleMap nMap;
MapView mapView;
CameraUpdate update;
JSONArray array;
private ClusterManager<ItemCluster> mClusterManager;
private void parseJSON(JSONArray array) {
if (mapView != null) {
nMap = mapView.getMap();
nMap.getUiSettings().setMyLocationButtonEnabled(false);
nMap.setMyLocationEnabled(true);
nMap.getUiSettings().setZoomControlsEnabled(true);
mClusterManager = new ClusterManager<>(this.getActivity(), nMap);
nMap.setOnCameraChangeListener(mClusterManager);
nMap.setInfoWindowAdapter(mClusterManager.getMarkerManager());
nMap.setOnMarkerClickListener(mClusterManager);
}
try {
//Loading LAT LOng of markers on map
for (int i = 0; i < array.length(); i++) {
JSONObject jsonObject = array.getJSONObject(i);
String locality = jsonObject.getString("nombre");
String vientos = jsonObject.getString("viento");
int temp = jsonObject.getInt("temperatura");
double lat = jsonObject.getDouble("lat");
double lon = jsonObject.getDouble("lon");
nMap = mapView.getMap();
mClusterManager.setRenderer(new OwnIconRendered(getActivity().getApplicationContext(), nMap, mClusterManager));
ItemCluster offsetItem = new ItemCluster(lat, lon, locality, vientos, temp);
mClusterManager.addItem(offsetItem);
}
LatLng latLon = new LatLng(39.4666667, -0.3666667);
update = CameraUpdateFactory.newLatLngZoom(latLon, 10);
nMap.moveCamera(update);
} catch (Exception e) {
e.printStackTrace();
}
}
@SuppressLint("ValidFragment")
public MainFragment(JSONArray input) {
array = input;
}
public MainFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container, false);
mapView = (MapView) rootView.findViewById(R.id.map);
mapView.onCreate(savedInstanceState);
parseJSON(array);
// Inflate the layout for this fragment
setRetainInstance(true);
return rootView;
}
class OwnIconRendered extends DefaultClusterRenderer<ItemCluster> {
private final IconGenerator mClusterIconGenerator = new IconGenerator(getActivity().getApplicationContext());
private final TextView mClusterImageView;
private final ImageView mClusterViento;
private int tempAvg = 0;
private final Drawable TRANSPARENT_DRAWABLE = new ColorDrawable(Color.TRANSPARENT);
public OwnIconRendered(Context context, GoogleMap map,
ClusterManager<ItemCluster> clusterManager) {
super(context, map, clusterManager);
View clusterIcon = getActivity().getLayoutInflater().inflate(R.layout.info_windows, null);
mClusterIconGenerator.setContentView(clusterIcon);
mClusterImageView = (TextView) clusterIcon.findViewById(R.id.maxTmp);
mClusterViento = (ImageView) clusterIcon.findViewById(R.id.viento);
}
@Override
protected void onBeforeClusterItemRendered(ItemCluster item, MarkerOptions markerOptions) {
markerOptions.icon(BitmapDescriptorFactory.fromResource(R.drawable.marcador_playa));
markerOptions.title(item.getTitle());
super.onBeforeClusterItemRendered(item, markerOptions);
}
@Override
protected void onBeforeClusterRendered(Cluster<ItemCluster> cluster, MarkerOptions markerOptions) {
tempAvg = 0;
String vientoStr = null;
for (ItemCluster item : cluster.getItems()) {
tempAvg = (item.getTemp()+tempAvg);
}
mClusterImageView.setText(String.valueOf(tempAvg/cluster.getSize()));
if ((tempAvg/cluster.getSize()) > 32) {
mClusterImageView.setBackgroundResource(R.drawable.temp_32_o_mas);
} else if ((tempAvg/cluster.getSize()) <= 31 && (tempAvg/cluster.getSize()) >= 25) {
mClusterImageView.setBackgroundResource(R.drawable.temp_25_a_31);
} else if ((tempAvg/cluster.getSize()) <= 24 && (tempAvg/cluster.getSize()) >= 20) {
mClusterImageView.setBackgroundResource(R.drawable.temp_20_a_24);
} else if ((tempAvg/cluster.getSize()) <= 19 && (tempAvg/cluster.getSize()) >= 15) {
mClusterImageView.setBackgroundResource(R.drawable.temp_15_a_19);
} else if ((tempAvg/cluster.getSize()) <= 14 && (tempAvg/cluster.getSize()) >= 10) {
mClusterImageView.setBackgroundResource(R.drawable.temp_10_a_14);
} else if ((tempAvg/cluster.getSize()) <= 9 && (tempAvg/cluster.getSize()) >= 5) {
mClusterImageView.setBackgroundResource(R.drawable.temp_5_a_9);
} else if ((tempAvg/cluster.getSize()) <= 4) {
mClusterImageView.setBackgroundResource(R.drawable.temp_4_o_menos);
}
for (ItemCluster item : cluster.getItems()) {
vientoStr = item.getViento();
if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_NE2.svg")) {
mClusterViento.setImageResource(R.drawable.viento_ne2);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_NW2.svg")) {
mClusterViento.setImageResource(R.drawable.viento_nw2);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_E2.svg")) {
mClusterViento.setImageResource(R.drawable.viento_e2);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_NE1.svg")) {
mClusterViento.setImageResource(R.drawable.viento_ne1);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_NE3.svg")) {
mClusterViento.setImageResource(R.drawable.viento_ne3);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_NE4.svg")) {
mClusterViento.setImageResource(R.drawable.viento_ne4);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_NW1.svg")) {
mClusterViento.setImageResource(R.drawable.viento_nw1);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_NW3.svg")) {
mClusterViento.setImageResource(R.drawable.viento_nw3);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_NW4.svg")) {
mClusterViento.setImageResource(R.drawable.viento_nw4);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_E1.svg")) {
mClusterViento.setImageResource(R.drawable.viento_e1);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_E3.svg")) {
mClusterViento.setImageResource(R.drawable.viento_e3);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_E4.svg")) {
mClusterViento.setImageResource(R.drawable.viento_e4);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_N1.svg")) {
mClusterViento.setImageResource(R.drawable.viento_n1);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_N2.svg")) {
mClusterViento.setImageResource(R.drawable.viento_n2);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_N3.svg")) {
mClusterViento.setImageResource(R.drawable.viento_n3);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_N4.svg")) {
mClusterViento.setImageResource(R.drawable.viento_n4);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_W1.svg")) {
mClusterViento.setImageResource(R.drawable.viento_w1);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_W2.svg")) {
mClusterViento.setImageResource(R.drawable.viento_w2);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_W3.svg")) {
mClusterViento.setImageResource(R.drawable.viento_w3);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_W4.svg")) {
mClusterViento.setImageResource(R.drawable.viento_w4);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_SW1.svg")) {
mClusterViento.setImageResource(R.drawable.viento_sw1);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_SW2.svg")) {
mClusterViento.setImageResource(R.drawable.viento_sw2);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_SW3.svg")) {
mClusterViento.setImageResource(R.drawable.viento_sw3);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_SW4.svg")) {
mClusterViento.setImageResource(R.drawable.viento_sw4);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_SE1.svg")) {
mClusterViento.setImageResource(R.drawable.viento_se1);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_SE2.svg")) {
mClusterViento.setImageResource(R.drawable.viento_se2);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_SE3.svg")) {
mClusterViento.setImageResource(R.drawable.viento_se3);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_SE4.svg")) {
mClusterViento.setImageResource(R.drawable.viento_se4);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_S1.svg")) {
mClusterViento.setImageResource(R.drawable.viento_s1);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_S2.svg")) {
mClusterViento.setImageResource(R.drawable.viento_s2);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_S3.svg")) {
mClusterViento.setImageResource(R.drawable.viento_s3);
} else if (Objects.equals(vientoStr, "appvalenciaplayas/static/images/viento/viento_S4.svg")) {
mClusterViento.setImageResource(R.drawable.viento_s4);
}
break;
}
mClusterIconGenerator.setBackground(TRANSPARENT_DRAWABLE);
Bitmap bitmap = mClusterIconGenerator.makeIcon(String.valueOf(cluster.getSize()));
markerOptions.icon(BitmapDescriptorFactory.fromBitmap(bitmap));
}
@Override
protected boolean shouldRenderAsCluster(Cluster cluster) {
// Always render clusters.
return cluster.getSize() > 1;
}
}
@Override
public void onResume() {
super.onResume();
mapView.onResume();
}
@Override
public void onDestroy() {
super.onDestroy();
mapView.onDestroy();
}
@Override
public void onPause() {
super.onPause();
mapView.onPause();
}
@Override
public void onLowMemory() {
super.onLowMemory();
mapView.onLowMemory();
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
mapView.onSaveInstanceState(outState);
}
}
public类MainActivity扩展了AppCompatActivity
实现NavigationView.OnNavigationItemSelectedListener{
NavigationView NavigationView=null;
工具栏=空;
谷歌地图;
鲷鱼;
杰索纳雷·贾雷;
私有静态最终整数错误对话框请求=9001;
海滩的公共静态最终内部ID=5;
//initBeach测试=新的initBeach();
//JSONArray JSONArray=test.ExcuteLoad();
/**
*注意:这是自动生成的,用于实现应用程序索引API。
*看https://g.co/AppIndexing/AndroidStudio 了解更多信息。
*/
私人谷歌客户;
片段;
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
myFragments=新SparseArray();
//片名(“”);
setContentView(R.layout.activity_main);
if(servicesOK()){
试一试{
jArray=newloadjson().execute().get();
}捕获(例外e){
e、 printStackTrace();
}
}否则{
setContentView(R.layout.activity_main);
}
//首先设置片段
碎片事务碎片事务=
getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.fragment_容器,新的MainFragment(jArray));
fragmentTransaction.addToBackStack(“1”);
fragmentTransaction.commit();
toolbar=(toolbar)findviewbyd(R.id.toolbar);
设置支持操作栏(工具栏);
//无检测恒定条件
getSupportActionBar().setDisplayShowTitleEnabled(false);
抽屉布局抽屉=(抽屉布局)findViewById(R.id.抽屉布局);
ActionBarDrawerToggle切换=新建ActionBarDrawerToggle(
这,抽屉,工具栏,R.string.navigation\u drawer\u open,R.string.navigation\u drawer\u close);
抽屉。设置抽屉定位器(开关);
toggle.syncState();
navigationView=(navigationView)findViewById(R.id.nav_视图);
//如何以编程方式更改标题中的元素
navigationView.setNavigationItemSelectedListener(此);
//注意:这是自动生成的,用于实现应用程序索引API。
//看https://g.co/AppIndexing/AndroidStudio 了解更多信息。
client=new GoogleApiClient.Builder(this.addApi(AppIndex.API).build();
navigationView.SetItemIContentList(空);
}
@凌驾
public void onBackPressed(){
抽屉布局抽屉=(抽屉布局)findViewById(R.id.抽屉布局);
if(抽屉isDrawerOpen(重力压缩机启动)){
抽屉。关闭抽屉(重力压缩机启动);
}否则{
super.onBackPressed();
}
}
@凌驾
公共布尔onCreateOptions菜单(菜单){
//为菜单充气;这会将项目添加到操作栏(如果存在)。
getMenuInflater().充气(R.menu.main,menu);
返回true;
}
@凌驾
公共布尔值onOptionsItemSelected(菜单项项){
//处理操作栏项目单击此处。操作栏将
//自动处理Home/Up按钮上的点击,只要
//在AndroidManifest.xml中指定父活动时。
//noinspection SimplifiableIf语句
返回super.onOptionsItemSelected(项目);
}
@凌驾
公共布尔值onNavigationItemSelected(MenuItem项){
//处理导航视图项单击此处。
int id=item.getItemId();
如果(id==R.id.nav_camara){
fragment=myFragments.get(1);
//如果myFragments中不存在片段,请创建一个片段并添加到其中
if(片段==null){
片段=新的主片段(jArray);
myFragments.put(1,fragments);
}
碎片事务碎片事务=
getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.fragment\u容器,fragment);
fragmentTransaction.commit();
//处理照相机的动作
}否则如果(id==R.id.nav_画廊){
//首先设置片段
fragment=myFragments.get(2);
//如果myFragments中不存在片段,请创建一个片段并添加到其中
if(片段==null){
片段=新的GalleryFragment();
myFragments.put(2,fragments);
}
碎片事务碎片事务=
getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.fragment\u容器,fragment);
fragmentTransaction.commit();
}else if(id==R.id.nav_search){
//首先设置片段
//处理相机的动作
}else if(id==R.id.nav_manage){
//处理相机的动作
}else if(id==R.id.nav_共享){
}else if(id==R.id.nav_send){
}
抽屉布局抽屉=(抽屉布局)findViewById(R.id.抽屉布局);
抽屉。关闭抽屉(重力压缩机启动);
返回true;
}
公共布尔服务sok(){
int isAvailable=GooglePlayS
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.add(android.R.id.content, testFragment);
fragmentTransaction.addToBackStack(TAG);
fragmentTranscation.commit();
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
mapView.onSaveInstanceState(outState);
}
Fragment fragment = new MainFragment(jArray);
myFragments.put(1, fragment);
//Set the fragment initially
FragmentTransaction fragmentTransaction =
getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.fragment_container, fragment);
fragmentTransaction.addToBackStack("1");
fragmentTransaction.commit();
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
mapView.onSaveInstanceState(outState);
outState.putString("jsonArr", jsonArray.toString());
// TODO put more things which you need to.
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
if (savedInstanceState != null) {
String jsonArrString = savedInstanceState.getString("jsonArr");
try {
jsonArray = new JSONArray(jsonArrString);
}
catch (Exception e) {
e.printStackTrace()
}
}
// TODO your old code goes after this line.
}