I am trying to change TextView value in Fragment but it not clearing old value.
Value is overlapping on old value.
Code from Fragment -
public class MainFragment extends Fragment {
TextView t1;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_main, container, false);
t1 = view.findViewById(R.id.textview1);
t1.setText(s1);
return view;
}
}
Code from Activity -
public static String s1;
#Override
public void onOptionClicked(int position, Object objectClicked) {
// Set the toolbar title
setTitle(mTitles.get(position));
// Set the right options selected
mMenuAdapter.setViewSelected(position, true);
s1 = mTitles.get(position);
// Navigate to the right fragment
switch (position) {
default:
goToFragment(new MainFragment(), false);
break;
}
// Close the drawer
mViewHolder.mDuoDrawerLayout.closeDrawer();
}
Fragment xml file -
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout xmlns:ads="http://schemas.android.com/apk/res-auto"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:gravity="center"
android:orientation="vertical">
<TextView
android:id="#+id/textview1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20sp"/>
</LinearLayout>
Tried by using below code but not working....
public void setText(String text){
TextView textView = (TextView) getView().findViewById(R.id.detailsText);
textView.setText(textview1);
}
Please help.... Thanks in Advance...!
If you are using .add in your goToFragment() code, then you should replace with .replace
fragmentTransaction.add(R.id.container,
currentFragment).commit()
to
fragmentTransaction.replace(R.id.fragment_container,
currentFragment).commit()
You can put below code in onCreateView method of your fragment and it will remove this overlapping issue
View view = inflater.inflate(R.layout.your_layout, container, false);
view.setBackgroundColor(Color.WHITE);
fragment.xml add (android:background="#color/white") in your Layout.
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/white"
android:orientation="vertical">
<LinearLayout xmlns:ads="http://schemas.android.com/apk/res-auto"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:gravity="center"
android:orientation="vertical">
<TextView
android:id="#+id/textview1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20sp"/>
</LinearLayout>
As Ranjan said it is not good practice, why do not you create MainFragment mf = new MainFragment(); inside onCreate() and use that in that method. In this way you will have only one instance. I do not use fragments like this so I do not have good idea about your code otherwise.
Related
I've implemented onClickListener but inside onCreateView() it's unable to find the button's id and i.e "myButton"
My Code is:
public class Category extends Fragment implements View.OnClickListener {
View view;Button b;
public Category() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
view=inflater.inflate(R.layout.fragment_category, container,false);
b=(Button)view.findViewById(R.id.myButton);
b.setOnClickListener(this);
return view;
}
My fragment_category.xml is as below it's containing one button and a textView:
<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"
tools:context="layout.Category"
android:id="#+id/constraintLayout">
<TextView
android:layout_width="368dp"
android:layout_height="495dp"
android:text="#string/hello_blank_fragment"
tools:layout_editor_absoluteY="8dp"
tools:layout_editor_absoluteX="8dp" />
<Button
android:id="#+id/myButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_centerVertical="true"
android:elevation="0dp"
android:text="Button"
tools:layout_editor_absoluteX="135dp"
tools:layout_editor_absoluteY="208dp" />
You are inflating "fragment_category", but you said you posted "fragment" xml code.
You're most likely not inflating the correct layout file.
Actually problem was there in IDE after some rectifications the error is sorted out.
I have a viewpager with a fragment that contains a button. Here is the onCreateView of the fragment.
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View v = inflater.inflate(R.layout.fragment, container, false);
refreshButton = (Button) v.findViewById(R.id.refreshButton);
refreshButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
refreshButton_Click();
}
});
return v;
}
I can verify that refreshButton_Click is not being called when I click on the refreshButton (which is clearly visible). I am guessing that the fragment just isn't getting focus or that it isn't allowing child elements to have focus.
Here is the layout for the fragment:
<LinearLayout 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.me.philip.firehydrant.FeedFragment"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#ffededed">
<TextView
android:id="#+id/headerTextView"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:gravity="center"
android:text="header"
android:textAppearance="?android:attr/textAppearanceLarge" />
<Button
android:layout_margin="2dp"
android:text="refresh"
android:id="#+id/refreshButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:focusable="true"/>
</LinearLayout>
<ExpandableListView
android:id="#+id/postList"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"></ExpandableListView>
</LinearLayout>
EDIT: I forgot to mention: the button doesn't do the usual blue lighting up that buttons do when they are clicked, so I'm pretty sure it isn't the setOnClickListener that isn't working, but rather that the button is unable to get focus
Well, I believe I solved it. I had the ViewPager nested inside a DrawerLayout. I guess the similarity of their swiping gestures make them unworkable together.
I am trying to display 6 rows inside a linear layout. I want to do this through fragments as the content will be dynamic and the number of rows will also be dynamic later on. I have the following code but only one row appears on the screen. I have SettingsActivity.java, settings.xml ThemeRowFragment,java and theme_row_layout.xml.
SettingsActivity.java
//imports
public class SettingsActivity extends FragmentActivity {
private int NUM_THEMES = 7;
ThemeRowFragment[] view_themes;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.settings);
view_themes = new ThemeRowFragment[NUM_THEMES];
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager
.beginTransaction();
for (int i = 0; i < view_themes.length; i++) {
view_themes[i] = new ThemeRowFragment(COLOR_MAP[i]);
fragmentTransaction.add(R.id.theme_linear_layout, view_themes[i],
"Row" + i);
}
fragmentTransaction.commit();
}
}
settings.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads"
android:id="#+id/theme_linear_layout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:id="#+id/string_theme"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/string_theme"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="#cde21c" />
</LinearLayout>
ThemeRowFragment.java
public class ThemeRowFragment extends Fragment {
private int[] colors;
public ThemeRowFragment(int colors[]) {
super();
this.colors = colors;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.theme_row_layout, container,
false);
return view;
}
}
theme_row_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"
android:orientation="horizontal" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/pick_colors" >
</TextView>
</LinearLayout>
Fragments will inflate themselves into the View you add them to. So you really can't do it this way. So you need to have X empty containers, one for each fragment you are going to inflate. Add each fragment to the same container will actually layer them all on top of each other, sort of making them really hard to see and use when the screen renders.
Alternatives:
You could do something like the following:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads"
android:id="#+id/theme_linear_layout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:id="#+id/string_theme"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/string_theme"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="#cde21c" />
<FrameLayout android:id="#+id/fragment_container1"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<FrameLayout android:id="#+id/fragment_container2"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<FrameLayout android:id="#+id/fragment_container3"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<FrameLayout android:id="#+id/fragment_container4"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<FrameLayout android:id="#+id/fragment_container5"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<!-- etc. -->
</LinearLayout>
Or just add each FrameLayout programatically via the LinearLayout's addView() with a unique ID for each FrameLayout.
LinearLayout layout = (LinearLayout)findViewById(R.id.linear);
FragmentTxn txn = getFragmentManager.beginTransaction();
int i = 1; // This seems really fragile though
for (Fragment f : fragments) {
FrameLayout frame = new FrameLayout(this);
frame.setId(i);
layout.addView(frame);
txn.add(i, f);
i++;
}
txn.commit();
Or the other way would be to just use a listView and add each row that way. Not using Fragments at all.
<TextView
android:id="#+id/string_theme"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="#string/string_theme"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="#cde21c" />
<ListView android:id="#+id/listview"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</LinearLayout>
then later on do something like this:
ListView view = (ListView)findViewById(R.id.listview);
view.setAdapter(new ArrayAdapter(items) { // items is a collection of objects you are representing
public View getView(int position, View view, ViewGroup parent) {
view = LayoutInflator.from(parent.getContext()).inflate(R.layout.theme_row_layout, parent, false);
// manipulate the view
return view;
});
You are creating a instance of ThemeRowFragment n number of times. The problem is you are creating this as an fragment and trying to add it dynamically. Since you instantiate the same Fragment i suggest you to use ListView and use a custom adapter and set CustomView and override the getView method of your adapter to adjust your views
I'm trying to transit between 2 fragment from games.xml to levels.xml
its like angry bird game menu:
games: http://i.stack.imgur.com/9S7Ar.png
levels:http://i.stack.imgur.com/uB8rP.jpg
games.java:
public class Games extends Fragment implements OnClickListener{
public Games(){}
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.games, container, false);
return rootView;
}
#Override
public void onClick(View v) {
Fragment f = null;
switch (v.getId()) {
case R.id.s4:{
f = new Levels();
break;
default:
break;
}
if (f != null) {
FragmentTransaction transaction = getFragmentManager().beginTransaction();
transaction.replace(R.id.lvl_container, f);
transaction.addToBackStack(null);
transaction.commit();
}
}
level.java:
public class Levels extends Fragment {
public Levels(){}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.levels, container, false);
return rootView;
}
}
levels.xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/lvl_container"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="#+id/txtLabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:textSize="16dp"
android:text="#string/s4"/>
<ImageButton android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/txtLabel"
android:src="#drawable/lvlgray_1"
android:layout_centerHorizontal="true"
android:layout_marginTop="10dp"/>
games.xml
<?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">
<TextView
android:id="#+id/lastgame"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:textSize="16dp"
android:text="#string/games"/>
<ImageButton
android:id="#+id/s4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/lastgame"
android:layout_centerHorizontal="true"
android:layout_marginTop="10dp"
android:src="#drawable/s4" />
the problem is when I click on imagebotton nothing happens (should go to levels), I think there is problem with these line
transaction.replace(R.id.lvl_container, f);
but I don't know what is it. Any ideas?
I've already seen this (developer.android.com/guide/components/fragments) but no help! What did I miss?
Is there any other way to transition between 2 fragments?
Thank you
Add this line in onCreateView at Games.java:
ImageButton im = (ImageButton) rootView.findViewById(R.id.s4);
im.setOnClickListener(this);
This make refrence to your imagebutton and set onClickListener on it to call your onClick method.
I'm very new in Android and I'm bulding a MasterDetailFlow application the problem is that I can't change the layout file (there is only the default TextView).
I want to add an ImageView and a MapView.
Please don't forget that I'm a beginner :D !
Thanks.
public static final String ARG_ITEM_ID = "item_id";
DummyContent.DummyItem mItem;
public StationDetailFragment() {
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments().containsKey(ARG_ITEM_ID)) {
mItem = DummyContent.ITEM_MAP.get(getArguments().getString(ARG_ITEM_ID));
}
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_station_detail, container, false);
if (mItem != null) {
((TextView) rootView.findViewById(R.id.station_detail)).setText(mItem.title);
}
return rootView;
}
The auto generated layout files will only contain a textview and you are therefor not able to add any new stull from the palette.
e.g
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
style="?android:attr/textAppearanceLarge"
android:id="#+id/game_detail"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="16dp"
tools:context=".GameDetailFragment" />
If you add any other Layout around the generated stub, you will be able to modify and add new stuff within that layout.xml
example:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher" />
<TextView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/game_detail"
style="?android:attr/textAppearanceLarge"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="16dp"
app:context=".GameDetailFragment" />
</LinearLayout>