Add fragment as Subview in android

Add fragment as Subview in android - android

I have a fragment which has a horizontal scrollview. I want to add another fragment to this scrollview. How can I do that?
Here is my first fragment
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="wrap_content"
android:layout_height="220dp"
android:background="#drawable/arrow_bg">
<HorizontalScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/horizontalScrollView"
android:layout_marginTop="15dp" >
<LinearLayout
android:id="#+id/offerLayout"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent"></LinearLayout>
</HorizontalScrollView>
</LinearLayout>
I am trying to add the below fragment to the scrollview
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="174dp"
android:layout_height="214dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="HEALTH"
android:id="#+id/offerTitle"
android:capitalize="characters" />
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/offer_image_text_bg">
<ImageView
android:layout_width="wrap_content"
android:layout_height="135dp"
android:id="#+id/offerIcon"
android:src="#drawable/health_img"/>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:id="#+id/favLayout"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<RatingBar
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/ratingBar"
android:numStars="5"
android:rating="4"
android:isIndicator="true"
android:layout_marginTop="5dp"
android:layout_marginLeft="5dp"
style="#style/ratingBarStyle"/>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:layout_marginRight="5dp"
android:id="#+id/favIcon"
android:src="#drawable/like_icon"
android:layout_alignParentRight="true"/>
</RelativeLayout>
</LinearLayout>
<LinearLayout
android:layout_below="#+id/favLayout"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Medium Text"
android:id="#+id/txt_OfferTitle2" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Small Text"
android:id="#+id/txt_OfferDesc" />
</LinearLayout>
</RelativeLayout>
</LinearLayout>
</LinearLayout>
This is the code I am using for the same
private void loadSelectedOffers() {
for(int i=0;i<3;i++)
{
OfferItemFragment offerItem = new OfferItemFragment();
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
ViewGroup.LayoutParams.WRAP_CONTENT);
offerItem.getView().setLayoutParams(params);
offerLayout.addView(offerItem.getView());
}
}
But I am getting a null pointer exception at line
offerItem.getView()
How can I do this properly?

Add a FrameLayout to your first fragment and then add the fragment to that framelayout.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/parent"
android:orientation="vertical" android:layout_width="wrap_content"
android:layout_height="220dp"
android:background="#468494">
<HorizontalScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/horizontalScrollView"
android:background="#BB099D"
android:layout_marginTop="15dp" >
<LinearLayout
android:id="#+id/child"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/black">
</LinearLayout>
</HorizontalScrollView>
</LinearLayout>
Then in your code add the fragment to the view using FragmentManager and FragmentTransaction
public class MainActivity extends Activity {
Fragment f;
EditText send;
LinearLayout parent;
LinearLayout child;
HorizontalScrollView scroll;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
LayoutInflater inflater = (LayoutInflater) this.getSystemService(LAYOUT_INFLATER_SERVICE);
ViewGroup vg = (LinearLayout) inflater.inflate(R.layout.activity_main, null );
child = (LinearLayout) vg.findViewById(R.id.child);
loadSelectedOffers();
setContentView(vg);
}
private void loadSelectedOffers() {
for(int i=0;i<3;i++)
{
FrameLayout frame = new FrameLayout(this);
child.addView(frame);
frame.setId(i);
frame.setBackgroundColor(getResources().getColor(R.color.black));
frame.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
FragmentManager manager = getFragmentManager();
FragmentTransaction transaction = manager.beginTransaction();
SenderFragment offerItem = new SenderFragment();
transaction.add(i, offerItem, "offer_item_" );
transaction.commit();
}
}
I believe something like this should work now.

You are getting view null because its onCreateView() has not been executed yet, that in turn is because you have merely instantiated the fragment and not attached it to your activity.
Try adding FrameLayouts in your HSV and replacing them by the fragments.

Related

Reverse layouts inside RelativeLayout programmatically

I have one relativeLayout and three view's inside RelativeLayout. There views are place on each other.
<RelativeLayout
android:id="#+id/includelayoutgroup"
android:layout_width="match_parent"
android:layout_height="match_parent">
<View xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/transparentColorView"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:clickable="true"
android:visibility="visible" />
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/keyboard_main_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:visibility="visible">
<include
layout="#layout/transfer_keyboard_fragment"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/finalRequestView"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:clickable="true"
android:visibility="visible">
<include
layout="#layout/fragment_transfer_new_version_container_child"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
</RelativeLayout>
Is it a possible to reverse position my view's? I mean,in my code last Layout is finalRequestView and in button click i would to my last view in first position,and other view's place on my view,
How i can solve this problem?

I try to reverse layout by following demo & it works as you want, please take a look
ReverseLayout.java
public class ReverseLayout extends AppCompatActivity {
LinearLayout llRoot;
Button btReverseLayout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.reverse_layout);
llRoot = (LinearLayout) findViewById(R.id.llRoot);
btReverseLayout = (Button) findViewById(R.id.btReverseLayout);
btReverseLayout.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
ArrayList<View> alViews = new ArrayList<View>();
for (int i = llRoot.getChildCount() - 1; i >= 0; i--) {
View view = llRoot.getChildAt(i);
llRoot.removeViewAt(i);
alViews.add(view);
}
for (int j = 0; j < alViews.size(); j++) {
llRoot.addView(alViews.get(j));
}
}
});
}
}
reverse_layout.xml layout file
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_6"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.tosc185.testproject.Activity6">
<LinearLayout
android:id="#+id/llRoot"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#FF0000"
android:gravity="center"
android:orientation="vertical"
android:padding="15dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="1"
android:textSize="16dp" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#00FF00"
android:gravity="center"
android:orientation="vertical"
android:padding="15dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="2"
android:textSize="16dp" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#0000FF"
android:gravity="center"
android:orientation="vertical"
android:padding="15dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="3"
android:textSize="16dp" />
</LinearLayout>
</LinearLayout>
<Button
android:id="#+id/btReverseLayout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="Reverse Layout" />
</RelativeLayout>

Adding Views dynamically in Linear Layout in Fragment

I am trying to add TextView to the nested linearLayout in fragmentin onCreateView, I don't know if this is the correct approach or not, new to android!
Thanks in advance
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
ViewGroup rootView = (ViewGroup) inflater.inflate(R.layout.fragment_screen_slide_page, container, false);
List<LifeBerrysXmlParser.Item> items = (ArrayList<LifeBerrysXmlParser.Item>) getArguments().getSerializable("List");
TextView mainHeading = (TextView) rootView.findViewById(R.id.mainHeading);
ImageView mainImage = (ImageView) rootView.findViewById(R.id.articleMainImage);
LinearLayout articleLayout = (LinearLayout) rootView.findViewById(R.id.articleLayout);
TextView tev = new TextView(getActivity());
tev.setText("Hello..............");
articleLayout.addView(tev);
LifeBerrysXmlParser.Item item = items.get(getArguments().getInt("position"));
String articleMainHeading = item.mainHeading;
String articlemainImage = item.mainImage;
mainHeading.setText(articleMainHeading);
if (!articlemainImage.isEmpty()) {
Picasso.with(getContext()).load(articlemainImage).into(mainImage);
}
return rootView;
}
can anyone please help me what I am doing wrong?
here is my xml for the fragment
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
android:id="#+id/content"
android:padding="1dp"
android:layout_weight="1"
android:background="#000000"
android:layout_gravity="center">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#ffffff"
android:scrollIndicators="right">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/articleMainImage"
android:maxHeight="300dp"/>
<TextView
style="?android:textAppearanceMedium"
android:layout_width="match_parent"
android:layout_height="?android:attr/listPreferredItemHeightLarge"
android:layout_weight="1"
android:lineSpacingMultiplier="1.2"
android:id="#+id/mainHeading"
android:textColor="#ff6435"
android:clickable="false"
android:layout_gravity="center"
android:layout_centerInParent="true"/>
</RelativeLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/articleLayout"
android:orientation="horizontal">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Read More"
android:textSize="15dp"
android:textStyle="bold"
android:layout_gravity="center"
android:clickable="true"
android:focusable="false"
android:gravity="center"
android:onClick="readMore"
android:padding="1dp"
android:textColor="#android:color/holo_green_light" />
</LinearLayout>
</LinearLayout>
</LinearLayout>

You have mistake in your article layout. Your article layout has horizontal orientation, and it's child TextView has match_parent width, so when you add new child, it'll be outside the screen. Change orientation to vertical:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/articleLayout"
android:orientation="vertical"> <---- Change this line
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Read More"
android:textSize="15dp"
android:textStyle="bold"
android:layout_gravity="center"
android:clickable="true"
android:focusable="false"
android:gravity="center"
android:onClick="readMore"
android:padding="1dp"
android:textColor="#android:color/holo_green_light" />
</LinearLayout>

How can I display the layout containing the buttons down on the screen

With the layout below the buttons are being shown on top of the page. How can I make them appear below, after the container, down on the page?
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:id="#+id/container"
xmlns:android="http://schemas.android.com/apk/res/android">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_gravity="center_vertical|center_horizontal">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:id="#+id/Main"
android:onClick="ClickHomePage"
android:text= "#string/Home"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:id="#+id/map"
android:onClick="ClickClients"
android:text= "#string/Clients"
>
</Button>
</LinearLayout>
</LinearLayout>
The MainActivity looks as follows and the HomePage.xml is also below
public class MainActivity extends ActionBarActivity
{
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
GetButtonClicked(5);
setContentView(R.layout.activity_main);
}
public void GetButtonClicked(int position)
{
// update the main content by replacing fragments
Fragment fragment = null;
switch (position){
case 0:
fragment= new FirstPageFragment();
break;
default:
fragment = new FirstPageFragment();
break;
}
FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.container, fragment)
.commit();
}
public void ClickHomePage(View view){
GetButtonClicked(0);
}
public void ClickClients(View view){
GetButtonClicked();
}
}
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" tools:context="com.test.FirstPageFragment" android:background="#drawable/theme">
</FrameLayout>
This is the FirstPage
public class FirstPageFragment extends Fragment {
public FirstPageFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_first_page, container, false);
}
}

Use ralative layout insted of linear.

Make a different layout for bottom buttons, and then at the last of your container layout use this:
<include android:id="#+id/bottomLayout"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
layout="#layout/bottom_buttons"/>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_alignParentBottom="true"
android:orientation="horizontal" >
<Button
android:id="#+id/Main"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:onClick="ClickHomePage"
android:text="#string/Home" />
<Button
android:id="#+id/map"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:onClick="ClickClients"
android:text="#string/Clients" >
</Button>
</LinearLayout>
Try this

Use RelativeLayout with android:layout_alignParentBottom="true" step by step guide is available here.
Your skeleton for layout should look like this
<RelativeLayout
<LinearLayout android:layout_alignParentBottom="true">
<Button
<Button
</LinearLayout>
</RelativeLayout>
Final Layout
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:gravity="center"
android:orientation="horizontal" >
<Button
android:id="#+id/Main"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:onClick="ClickHomePage"
android:text="Home" />
<Button
android:layout_marginLeft="30dp"
android:id="#+id/map"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:onClick="ClickClients"
android:text="Clients" >
</Button>
</LinearLayout>

The issue was that I did not include the container in another layout...
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.test.MainPageActivityActivity">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal"
android:id="#+id/container">
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal"
android:layout_alignParentTop="#+id/container">
and insert buttons layout here....
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:id="#+id/Main"
android:onClick="ClickHomePage"
android:text= "#string/Home"
/>

Can not open fragment in FrameLayout

Helo every one, i try to open fragment in FrameLayout, but the screen is white. My code is:
public class ProfileActivity extends FragmentActivity {
Database db;
TextView tvName, tvCity;
ImageView imageView;
private FragmentTabHost mTabHost;
FrameLayout frameLayout;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_profile);
frameLayout = (FrameLayout) findViewById(R.id.frame_layout);
initialize();
}
private void initialize() {
tvName = (TextView) findViewById(R.id.tv_name);
tvCity = (TextView) findViewById(R.id.tv_city);
db = Database.getInstance(this);
imageView = (ImageView) findViewById(R.id.iv_profile);
Fragment fragment = new StatisticFragment();
FragmentTransaction transaction = getSupportFragmentManager()
.beginTransaction();
transaction.replace(R.id.frame_layout, fragment);
transaction.addToBackStack(null);
transaction.commit();
}
}
activity_profile.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent" android:background="#ffffff">
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="0dp" android:layout_weight="1">
<LinearLayout
android:orientation="vertical"
android:layout_width="0dp"
android:layout_height="fill_parent" android:layout_weight="1">
<ImageView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="#+id/iv_profile" android:src="#drawable/background_profile_first_part"
android:scaleType="fitXY"/>
</LinearLayout>
<LinearLayout
android:orientation="vertical"
android:layout_width="0dp"
android:layout_height="fill_parent" android:layout_weight="1.4"
android:background="#drawable/background_profile_second_part">
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="New Text"
android:id="#+id/tv_name" android:layout_gravity="right|center_vertical"
android:textColor="#ffffff"/>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="New Text"
android:id="#+id/tv_city" android:layout_gravity="center"/>
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<android.support.v4.app.FragmentTabHost
android:id="#android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
>
<FrameLayout
android:id="#android:id/tabcontent"
android:visibility="invisible"
android:layout_width="0dp"
android:layout_height="0dp"
/>
</android.support.v4.app.FragmentTabHost>
</LinearLayout>
</LinearLayout>
</LinearLayout>
<FrameLayout
android:id="#+id/frame_layout"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="2">
</FrameLayout>
</LinearLayout>
StaticFragment.class
public class StatisticFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_statistic, null);
return v;
}
}
fragment_statistic.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Statistic"
android:id="#+id/textView" android:layout_gravity="left|center_vertical" android:textColor="#fff555"/>
</LinearLayout>

Apply a background to the linear layout in the statistic fragment xml

I think you have set visibility to invisible inside frame layout so please edit your layout file
from
<android.support.v4.app.FragmentTabHost
android:id="#android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
>
<FrameLayout
android:id="#android:id/tabcontent"
android:visibility="invisible"
android:layout_width="0dp"
android:layout_height="0dp"
/>
</android.support.v4.app.FragmentTabHost>
remove this line and try again.
android:visibility="invisible"

It show the java.lang.NullPointerException when set the framelayout to VISIBLE in android

I detect the WIFI connect , when WIFI connect is break.
It will show the framelayout on the top of all widgets.
public class MjpegPlayerFragment extends Fragment {
public static FrameLayout reconnect_layout;
private class GetTimeStamp extends AsyncTask<URL, Integer, String> {
protected void onPostExecute(String result) {
Activity activity = getActivity() ;
if (activity != null) {
reconnect_fragment();
}
super.onPostExecute(result) ;
}
}
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.preview_player, container, false) ;
reconnect_layout = (FrameLayout) getActivity().findViewById(R.id.reconnect_layout);
return view ;
}
public static void reconnect_fragment() {
reconnect_layout.setVisibility(View.VISIBLE);
}
And the code of xml is like the following:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:baselineAligned="false"
android:orientation="vertical" >
<FrameLayout
android:id="#+id/reconnect_layout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:visibility="gone"
android:background="#454749">
<RelativeLayout
android:id="#+id/layout_imgbtn"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_centerVertical="true"
android:layout_above="#+id/bottom_buttonlayout"
android:layout_below="#+id/top_buttonlayout"
android:orientation="horizontal" >
<ImageView
android:id="#+id/phone"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toLeftOf="#+id/connect"
android:layout_centerVertical="true"
android:background="#drawable/phone"/>
<ImageView
android:id="#+id/connect"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:background="#drawable/break1"/>
<ImageView
android:id="#+id/break_image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="#+id/connect"
android:layout_centerVertical="true"
android:background="#drawable/camera_break"
/>
</RelativeLayout>
<LinearLayout
android:id="#+id/Reconnect_button_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_below="#+id/layout_break_text"
android:layout_centerInParent="true"
android:orientation="horizontal" >
<ImageButton
android:id="#+id/Imgbtn_reconnect"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_weight="1"
android:background="#00000000"
android:src="#drawable/reconnect" />
</LinearLayout>
<FrameLayout
android:id="#+id/player_frame"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<FrameLayout
android:id="#+id/player_surface_frame"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="center" >
<SurfaceView
android:id="#+id/player_surface"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="center" />
</FrameLayout>
</FrameLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:orientation="vertical" >
<RelativeLayout
android:id="#+id/top_buttonlayout"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#444444" >
<ImageView
android:id="#+id/imageBackground"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:background="#drawable/logo"
/>
<ImageButton
android:id="#+id/SettingButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:scaleType="fitXY"
android:background="#drawable/parmeter_setting" />
<ImageButton
android:id="#+id/FileSavebutton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:scaleType="fitXY"
android:background="#drawable/save_in_camera" />
</LinearLayout>
</RelativeLayout>
When it call the reconnect_fragment(); it show the java.lang.NullPointerException at reconnect_layout.setVisibility(View.VISIBLE);
Does there has any wrong ?
How to solve this problem ?

As you said in your comment framelayout is in fragment layout
So Change to
reconnect_layout = (FrameLayout) view.findViewById(R.id.reconnect_layout);
If it is in activity xml you use getActivity().findViewById

replace
reconnect_layout = (FrameLayout) getActivity().findViewById(R.id.reconnect_layout);
with
reconnect_layout = (FrameLayout) view.findViewById(R.id.reconnect_layout);

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

Add fragment as Subview in android - android

You are getting view null because its onCreateView() has not been executed yet, that in turn is because you have merely instantiated the fragment and not attached it to your activity. Try adding FrameLayouts in your HSV and replacing them by the fragments.

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It show the java.lang.NullPointerException when set the framelayout to VISIBLE in android

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