mainactivity.xml
<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"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin"
tools:context=".MainActivity"
android:background="#ff0"
android:id="#+id/myframe"
>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="left|top"
android:background="#00f"
/>
</FrameLayout>
sublayout.xml
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#f0f"
>
</TextView>
MainActivity
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
LayoutInflater layoutInflater = getLayoutInflater();
View view = layoutInflater.inflate(R.layout.sublayout, null);
FrameLayout frameLayout = (FrameLayout)findViewById(R.id.myframe);
setContentView(R.layout.activity_main);
frameLayout.addView(view);
}
}
I got the error as "A resource was acquired at attached stack trace but never released. See java.io.Closeable for information on avoiding resource leaks.
java.lang.Throwable: Explicit termination method 'close' not called"
the problem is you tried to access the view before setting the content view try this..
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
FrameLayout frameLayout = (FrameLayout)findViewById(R.id.myframe);
LayoutInflater layoutInflater = getLayoutInflater();
View view = layoutInflater.inflate(R.layout.sublayout, null);
frameLayout.addView(view);
}
Related
I am trying to have dynamic number of cardviews in my layout.For test i am trying to insert 3 cardviews in my layout,but instead of three only one card is added with "hello 3" written on it.
Here's my code for activity.
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
int i;
LinearLayout layout=(LinearLayout)findViewById(R.id.mainl);
for(i=1;i<=3;i++)
{
setContentView(R.layout.card);
LayoutInflater layoutInflater=(LayoutInflater) getBaseContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
final View addView=layoutInflater.inflate(R.layout.card,null);
TextView t=(TextView)findViewById(R.id.text1);
t.setText("hello "+String.valueOf(i));
layout.addView(addView);
}
}
}
`
code for cardlayout
<android.support.v7.widget.CardView
android:id="#+id/cardv"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_height="50dp"
android:layout_width="match_parent"
android:layout_margin="10dp"
card_view:cardCornerRadius="10dp">
<TextView
android:id="#+id/text1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="25dp"
android:text="Hello"
android:layout_gravity="center"/>
</android.support.v7.widget.CardView>
For contentmain
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context=".MainActivity"
tools:showIn="#layout/activity_main"
android:orientation="vertical"
android:id="#+id/mainl">
</LinearLayout>
Because in loop cycle, you set content view each loop.
Please just remove this line setContentView(R.layout.card);
So your onCreate() method will look like this:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
int i;
LinearLayout layout=(LinearLayout)findViewById(R.id.mainl);
for(i=1;i<=3;i++)
{
LayoutInflater layoutInflater=(LayoutInflater) getBaseContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
final View addView=layoutInflater.inflate(R.layout.card,null);
TextView t=(TextView) addView.findViewById(R.id.text1);
t.setText("hello "+String.valueOf(i));
layout.addView(addView);
}
}
I'm facing an issue regarding intro screen in android.
I create button in one fragment but i'm trying to call this button in welcomeActivity through layoutinflate in activity but it doesn't perform any functionality.
XML Fragment(custom_intro):
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<Button
android:id ="#+id/explore"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:text="Explore"
android:background="#drawable/round_button"
android:padding="15dp"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="114dp" />
</RelativeLayout>
WelcomeActivityLayout
<?xml version="1.0" encoding="utf-8"?>
<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"
android:background="#color/colorPrimaryDark">
<!--tools:showIn="#layout/welcome_activity"-->
<android.support.v4.view.ViewPager
android:id="#+id/view_pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true" />
</RelativeLayout>
WelcomeActivityJava:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.welcome_activity);
LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
customView = inflater.inflate(R.layout.custom_intro, null);
Button button=(Button)customView.findViewById(R.id.explore);
button.setText("Test");
Int[] layouts = new int[]{
R.layout.custom_intro,
R.layout.custom_intro1,
R.layout.custom_intro2,
R.layout.custom_intro3,
R.layout.custom_intro4};
myViewPagerAdapter = new MyViewPagerAdapter();
viewPager.setAdapter(myViewPagerAdapter);
viewPager.addOnPageChangeListener(viewPagerPageChangeListener);
viewPagerIndicator.setupWithViewPager(viewPager);
viewPagerIndicator.addOnPageChangeListener(viewPagerPageChangeListener);
}
If you want to access the Button of Fragment inside its parent Activity then you should define a method inside your Fragment class like this:
public class MyFragment extends Fragment {
TextView mTextView;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.activity_main, container, false);
mButton = (Button) view.findViewById(R.id.textView1);
return view;
}
public void setButtonText(String value){
mTextView.setText(value);
}
}
Then you can use this inside your Activity like this:
myFragment.setButtonText("Test");
I noticed that onCreateView() of one of my fragments is never called and i dont know why.I need to be able to make changes in onResume() but thats is also never called.
Here is how I add the fragments.
public class LiveGameStats extends FragmentActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_live_game_stats);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction().add(R.id.tab1, new Tab1Fragment()).commit();
}
FragmentTabHost mTabHost = (FragmentTabHost) findViewById(R.id.liveGameTabhost);
mTabHost.setup(LiveGameStats.this, getSupportFragmentManager(), R.id.liverealtabcontent);
mTabHost.addTab(mTabHost.newTabSpec("tab1").setIndicator("You"),
LiveGameTab1Fragment.class, null);
mTabHost.addTab(mTabHost.newTabSpec("tab2").setIndicator("Your Team"),
LiveGameTab2Fragment.class, null);
mTabHost.addTab(mTabHost.newTabSpec("tab3").setIndicator("Your Enemies"),
LiveGameTab3Fragment.class, null);
}
Tab1Fragment
public class Tab1Fragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View V = inflater.inflate(R.layout.tab1, container, false);
Log.v("FRAGMENT","FragmentActivityCreateView");
return V;
}
And finnaly the xml passed under R.layout.tab1
<?xml version="1.0" encoding="utf-8"?>
<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"
android:orientation="vertical"
tools:context=".DeviceFragment" >
<ImageButton
android:id="#+id/searchBtn"
android:src="#drawable/waves"
android:background="#drawable/search_selector"
android:padding="40dp"
android:layout_height="200dp"
android:layout_width="200dp"
android:onClick="liveMatch"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true" />
</RelativeLayout>
I think I might have created the fragments the wrong way. As you see it now they are created as the xml says but when I changed tabs, the content is "reseted".Any changed I placed in onCreateView() or onResume() is not called.
EDIT
I have tried to implement the method described in the 1st comment. After the implementation the tabs have the same content. Is like all the tabs have the same content. This time I posted all my classes and their associated XML.
public class LiveGameStats extends FragmentActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_live_game_stats);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction().add(R.id.liverealtabcontent, new LiveGameTab1Fragment()).commit();
getSupportFragmentManager().beginTransaction().add(R.id.liverealtabcontent, new LiveGameTab2Fragment()).commit();
getSupportFragmentManager().beginTransaction().add(R.id.liverealtabcontent, new LiveGameTab3Fragment()).commit();
}
FragmentTabHost mTabHost = (FragmentTabHost) findViewById(R.id.liveGameTabhost);
mTabHost.setup(LiveGameStats.this, getSupportFragmentManager(), R.id.liverealtabcontent);
mTabHost.addTab(mTabHost.newTabSpec("tab1").setIndicator("You"),
LiveGameTab1Fragment.class, null);
mTabHost.addTab(mTabHost.newTabSpec("tab2").setIndicator("Your Team"),
LiveGameTab2Fragment.class, null);
mTabHost.addTab(mTabHost.newTabSpec("tab3").setIndicator("Your Enemies"),
LiveGameTab3Fragment.class, null);
}
activity_live_game_stats.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_live_game_stats"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/holo_blue_light"
tools:context="lucian.leagueassistant.activity.LiveGameStats">
<android.support.v4.app.FragmentTabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/liveGameTabhost"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TabWidget
android:id="#android:id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0"
android:orientation="horizontal" />
<FrameLayout
android:id="#android:id/tabcontent"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="0" />
<FrameLayout
android:id="#+id/liverealtabcontent"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />
</LinearLayout>
</android.support.v4.app.FragmentTabHost>
</LinearLayout>
I wont post the code from LiveGameTab2 and LiveGameTab3 since they are almost the same. I have also another activity that
Edit2
Seems its solved when i changed from getSupportFragmentManager().beginTransaction().add(R.id.liverealtabcontent, new LiveGameTab1Fragment()).commit(); to getSupportFragmentManager().beginTransaction().add(android.R.id.tabcontent, new LiveGameTab1Fragment()).commit();
The problem is this:
getSupportFragmentManager().beginTransaction().add(R.id.tab1, new Tab1Fragment()).commit();
In the first argument you have to pass a id to a container in the Activity layout where your fragment will be attached.
You are passing a entire layout R.id.tab1.
Add a container view in activity_live_game_stats xml file,
<?xml version="1.0" encoding="utf-8"?>
<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"
android:orientation="vertical"
tools:context=".DeviceFragment" >
<FrameLayout
android:id="#+id/myContainer"
...(Other attrs)>
</FrameLayout>
</RelativeLayout>
and then
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction().add(R.id.myContainer, new Tab1Fragment()).commit();
}
Why listView can't addHeaderView to itself?
I have added the params into the header rather than WRAP_CONTENT,MATCH_PARETN.
MainActivity:
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ListView list = (ListView) findViewById(R.id.lv);
LinearLayout head = (LinearLayout) getLayoutInflater().inflate(R.layout.layout, null);
AbsListView.LayoutParams params = new AbsListView.LayoutParams(
200,200
);
head.setLayoutParams(params);
list.addHeaderView(head);
}
}
activity_main.xml:
<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"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".MainActivity">
<ListView
android:id="#+id/lv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</RelativeLayout>
layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="#+id/iv"
android:layout_width="200dp"
android:layout_height="200dp"
android:src="#mipmap/ic_launcher" />
</LinearLayout>
What should i do?
Try to imprort LayoutParams from RelativeLayout class instead of AbsListView. I think it may be problem of Class casting.
This app contains activity_main.xml, mainactivit.java and one Fragment class.
activity_main.xml has one Button and FrameLayout inside RelativeLayout.
When the Button is clicked, FrameLayout should be replaced by fragments, but it doesn't get replaced.
activity_main.xml
<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"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<Button
android:id="#+id/button2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:onClick="loadd"
android:text="Fragment No.2" />
<FrameLayout
android:id="#+id/maincontainer"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
</RelativeLayout>
mainactivity.java
public class MainActivity extends FragmentActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void loadd(View v) {
try {
Fragment fragment = new fr();
FragmentManager frgManager = getSupportFragmentManager();
FragmentTransaction trans = frgManager.beginTransaction();
trans.replace(R.id.maincontainer, fragment);
trans.commit();
} catch (Exception e) {
Toast.makeText(MainActivity.this, "error " + e.getMessage(), Toast.LENGTH_LONG).show();
}
}
}
Fragment class
public class fr extends Fragment{
public View OnCreateView(LayoutInflater inf,ViewGroup parent,Bundle save){
return inf.inflate(R.layout.send,parent, false);
}
}
send.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/container3"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="#+id/textmsg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Fragment 3" />
</LinearLayout>
There is no compile time or run time error, but when I click that Button the FrameLayout is not replaced by the Fragment.
Everything that you posted looks good, except you aren't overriding Fragment.onCreateView, instead you've made a typo.
What you have
public View OnCreateView(LayoutInflater inf, ViewGroup parent, Bundle save) {
return inf.inflate(R.layout.test, parent, false);
}
What you should have
#Override
public View onCreateView(LayoutInflater inf, ViewGroup parent, Bundle save) {
return inf.inflate(R.layout.test, parent, false);
}
Pay close attention to the name of the method. It should begin with a lowercase "o".