I want to display spinner in action bar(not in activity,in Fragment).for that i did below things
Step-1 (spinnermenu.xml)
`<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="#+id/menuSort"
android:showAsAction="ifRoom"
android:actionLayout="#layout/spinner"/>
</menu>`
Step-2 (spinner.xml)
<Spinner xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="70dp"
android:layout_height="wrap_content" />
step-3 (Code)
public class All extends Fragment{
ArrayList<String> spinnerlist;
ArrayAdapter<String> spinneradapter;
#Override
public void onCreate(Bundle savedInstanceState) {
setHasOptionsMenu(true);
super.onCreate(savedInstanceState);
}
#Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.spinnermenu, menu);
spinnerlist = new ArrayList<String>();
spinnerlist.add("Items1");
spinnerlist.add("Items2");
spinneradapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_spinner_dropdown_item, spinnerlist);
Spinner s = (Spinner) menu.findItem(R.id.menuSort).getActionView();
s.setAdapter(spinneradapter);
super.onCreateOptionsMenu(menu, inflater);
}
}
I am getting error in this line
setHasOptionsMenu(true);
and Null exception in this line
s.setAdapter(spinneradapter);
Could any one tell me how to rectify this error?
*PS : Is there any way to do the same?*
Related
I want to have the following screen:
When I click IMAGE 1 and IMAGE 2 buttons I want in IMAGE ZONE to appear Image1.jpg and Image2.jpg respectively. I want Image1.jpg and Image2.jpg to be in different fragments and replace those fragments on button click rather than changing simply the android:src of the ImageView in IMAGE ZONE on button click. I want Image1.jpg to be the first image to appear when opening the activity. I can't find how to do that with fragments in Xamarin.Android
You can create two Fragment and its xml first.
FragmentOne :
public class Fragment1 : Android.Support.V4.App.Fragment
{
public override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
// Create your fragment here
}
public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
// Use this to return your custom view for this Fragment
return inflater.Inflate(Resource.Layout.layoutFragment1, container, false);
//return base.OnCreateView(inflater, container, savedInstanceState);
}
}
and its 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:id="#+id/fragment1">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="fitXY"
android:src="#drawable/th2"/>
</LinearLayout>
FragementTwo :
public class Fragment2 : Android.Support.V4.App.Fragment
{
public override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
// Create your fragment here
}
public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
// Use this to return your custom view for this Fragment
return inflater.Inflate(Resource.Layout.layoutFragment2, container, false);
//return base.OnCreateView(inflater, container, savedInstanceState);
}
}
and its 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:id="#+id/fragment2">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="fitXY"
android:src="#drawable/th2"/>
</LinearLayout>
Then in MainActivity , you can set its xml as follow :
<?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"
android:orientation="vertical">
<LinearLayout
android:gravity="center_horizontal"
android:layout_width="match_parent"
android:layout_height="80dip"
android:orientation="horizontal">
<Button
android:id="#+id/buttonone"
android:layout_width="150dip"
android:layout_height="80dip"
android:text="FragmentOne"/>
<Button
android:id="#+id/buttontwo"
android:layout_width="150dip"
android:layout_height="80dip"
android:text="FragmentTwo"/>
</LinearLayout>
<RelativeLayout
android:id="#+id/containerView"
android:layout_width="match_parent"
android:layout_height="430dip">
</RelativeLayout>
</LinearLayout>
Finally , in MainActivity.cs implement this function :
public class MainActivity : AppCompatActivity
{
Android.Support.V4.App.Fragment fragmentOne;
Android.Support.V4.App.Fragment fragmentTwo;
Android.Support.V4.App.FragmentTransaction fragmentManager;
[Obsolete]
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
Xamarin.Essentials.Platform.Init(this, savedInstanceState);
// Set our view from the "main" layout resource
SetContentView(Resource.Layout.activity_main);
Button buttonone = FindViewById<Button>(Resource.Id.buttonone);
buttonone.Click += Buttonone_Click;
Button buttontwo = FindViewById<Button>(Resource.Id.buttontwo);
buttontwo.Click += Buttontwo_Click;
fragmentOne = new Fragment1();
fragmentTwo = new Fragment2();
fragmentManager = SupportFragmentManager.BeginTransaction();
fragmentManager.Add(Resource.Id.containerView, fragmentOne);
//adding first fragment when entering activity
fragmentManager.Commit();
}
private void Buttonone_Click(object sender, System.EventArgs e)
{
//throw new System.NotImplementedException();
Console.WriteLine("Buttonone_Click");
fragmentManager = SupportFragmentManager.BeginTransaction();
// replace to be the first fragment
fragmentManager.Replace(Resource.Id.containerView, fragmentOne);
fragmentManager.Commit();
}
private void Buttontwo_Click(object sender, System.EventArgs e)
{
//throw new System.NotImplementedException();
Console.WriteLine("Buttontwo_Click");
fragmentManager = SupportFragmentManager.BeginTransaction();
// replace ro be the second fragment
fragmentManager.Replace(Resource.Id.containerView, fragmentTwo);
fragmentManager.Commit();
}
}
The effect as follow :
i'm new on Android. I'm trying to implent an actionbar im my activity. Everytime i run that, the app crash.
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_percorsodisabili);
//Option Bar
getSupportActionBar().setTitle("Percorso Bici");
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
Resources res = getResources();
myVist3 = (ListView) findViewById(R.id.myVist3);
items = res.getStringArray(R.array.nomi_percorsi3);
descriptions = res.getStringArray(R.array.desc_percorsi3);
content = res.getStringArray(R.array.desc_percorsi3);
ItemAdapter itemAdapter = new ItemAdapter(percorsodisabili.this, items,foto,descriptions,content);
myVist3.setAdapter(itemAdapter);
}
}
Add the toolbar to your activity layout:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="wrap_content"
android:layout_height="56dp" />
<RelativeLayout
android:id="#+id/content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/toolbar">
<!--YOUR LAYOUT CODE-->
</RelativeLayout>
Then initialize java code for activity:
Use android.support.v7.widget.Toolbar in case you are using AppCompactActivity
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_third);
Toolbar toolbar=findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
}
This is my MainActivity
public class ProjectDetailsActivity extends AppCompatActivity {
private static final String TAG = ProjectDetailsActivity.class.getSimpleName();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_container);
if (savedInstanceState == null) {
addFragment(new ProjectDetailsFragment(), false);
}
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar_detail);
toolbar.setNavigationIcon(R.drawable.ic_action_back);
setSupportActionBar(toolbar);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Snackbar.make(view, "Button Clicked", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
}
public void addFragment(Fragment f, boolean isAddToBack) {
FragmentTransaction mFragmentTransaction = getSupportFragmentManager().beginTransaction();
mFragmentTransaction.replace(R.id.fragment_container, f);
if (isAddToBack) {
mFragmentTransaction.addToBackStack(null);
}
mFragmentTransaction.commit();
}
#Override
public void onBackPressed() {
super.onBackPressed();
overridePendingTransition(R.anim.abc_fade_in, R.anim.abc_fade_out);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
if(item.getItemId()==android.R.id.home){
onBackPressed();
}
return super.onOptionsItemSelected(item);
}
This my xml file
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout 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:fitsSystemWindows="true"
tools:context="com.example.abcd.scrollappdemo.ScrollingActivity">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar"
android:layout_width="match_parent"
android:layout_height="#dimen/toolbar_scrollable_image_height"
android:fitsSystemWindows="true"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/toolbar_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
>
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#drawable/title_bg" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom|start"
android:text="Garden Residency II"
android:textColor="#ffffffff" />
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar_detail"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<include
android:id="#+id/include_layout"
layout="#layout/project_detail_content" />
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="#dimen/fab_margin"
app:layout_anchor="#id/app_bar"
app:layout_anchorGravity="bottom|end" />
</android.support.design.widget.CoordinatorLayout>
This is my fragment class`
public class ProjectDetailsFragment extends BaseFragment implements View.OnClickListener {
private static final String TAG = ProjectDetailsFragment.class.getSimpleName();
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View mView = inflater.inflate(R.layout.fragment_details, container, false);
mappingWidgets(mView);
return mView;
}
private void mappingWidgets(View v) {
}
#Override
public void onClick(View v) {
}
}
Error Log :
FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to start activity ComponentInfo{}:
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.widget.Toolbar.setNavigationIcon(int)' on a null object reference at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.widget.Toolbar.setNavigationIcon(int)' on a null object reference
at com.abc.xyz.abcActivity.onCreate(ProjectDetailsActivity.java:32)
at android.app.Activity.performCreate(Activity.java:6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Activity theme in Mainfest is -
#style/Apptheme.Noactionbar
Just by putting these code in fragment I am able to access the actionbar from fragment
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View mView = inflater.inflate(R.layout.activity_detail, container, false);
final Toolbar toolbar = (Toolbar) mView.findViewById(R.id.toolbar);
AppCompatActivity activity = (AppCompatActivity) getActivity();
activity.setSupportActionBar(toolbar);
activity.setTitle("Project Details");
activity.getSupportActionBar().setDisplayHomeAsUpEnabled(true);
CollapsingToolbarLayout collapsingToolbar =
(CollapsingToolbarLayout)mView.findViewById(R.id.collapsing_toolbar);
I am new to android, I want to display actionbar icons in actionbar. Simple task, but I am not able to get this. I have uploaded my Mainactivity.java file.
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.action_bar_icons, 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.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
And this is my Custom Menu.XML file
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="#+id/action_search"
android:icon="#drawable/ic_favorite_border_white_48dp"
android:title="action_search"
android:showAsAction="ifRoom"/>
<!-- Location Found -->
<item android:id="#+id/action_location_found"
android:icon="#drawable/ic_star_rate_white_18dp"
android:title="action_location_found"
android:showAsAction="ifRoom" />
</menu>
I have also added my Mainfest file for reference.
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.user.actionbaricons">
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity
android:name=".MainActivity"
android:label="#string/app_name"
android:theme="#style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
And I am running the application in my Android Mobile (Nexus 5 Android 6.0.0)
Thanks in adavance.
In your main activity you can set actionbar icon
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ActionBar actionBar = getSupportActionBar();
actionBar.setIcon(R.drawable.ic_button); /* setting icon */
}
How to add action bar to a DialogFragment? I found a way to style an activity to the way we require and then display it as a dialog as in the following link ActionBar in a DialogFragment I need to set an action bar on a proper DialogFragment. Is it possible?
As Up ActionBar action on DialogFragment
indicates: There is no way to attach an ActionBar to the DialogFragment even though you can set the theme of the DialogFragment it will not register as a ActionBar to it, Dialog.getActionBar() will always return null.
But there's always the cases that I really want to use DialogFragment(which contain ActionBar like style) instead of Activity. Just add a Layout that will look like an ActionBar into the DialogFragment's Layout
the following is the steps:
1) DialogFragment layout: about_dialog.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#color/white" >
<include android:id="#+id/fake_action_bar"
layout="#layout/fake_action_bar_with_backbotton" />
2) Implement a ActionBar like layout: fake_action_bar_with_backbotton.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/fake_action_bar"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:minHeight="?attr/actionBarSize"
app:navigationIcon="#drawable/ic_menu_back"
android:background="#color/background_material_dark"
app:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light" />
Note: the #drawable/ic_menu_back is copied from sdk\platforms\android-21\data\res\drawable-hdpi
3) Update the DialogFragment code
public class AboutDialogFragment extends DialogFragment {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// use Theme_Holo_Light for full screen
// use Theme_Holo_Dialog for not full screen
// first parameter: DialogFragment.STYLE_NO_TITLE no title
setStyle(DialogFragment.STYLE_NO_FRAME, android.R.style.Theme_Holo_Light_DarkActionBar);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.about_dialog, container, false);
// set the listener for Navigation
Toolbar actionBar = (Toolbar) v.findViewById(R.id.fake_action_bar);
if (actionBar!=null) {
final AboutDialogFragment window = this;
actionBar.setTitle(R.string.about_title);
actionBar.setNavigationOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
window.dismiss();
}
});
}
return v;
}
}
Wish it can help!