I am using a simple TextView in my activity and want to make it appear in a custom font 'Black Chancery'. I have put the blkchcry.ttf file at location app>src>main>assets>fonts>blkchcry.ttf. But, the android studio can't find that font. Here's my AboutusActivity.java code
public class AboutusActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_aboutus);
TextView tx = (TextView)findViewById(R.id.title);
Typeface custom_font = Typeface.createFromAsset(getAssets(), "fonts/blkchcry.ttf");
tx.setTypeface(custom_font);
}
}
and following is the activity_aboutus.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
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=".AboutusActivity">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="About Rathi Classes"
android:textSize="20sp"
android:layout_margin="10dp"
android:gravity="center_horizontal"/>
<TextView
android:layout_below="#+id/title"
android:id="#+id/description"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="#string/about_text"
android:textSize="20sp"
android:layout_margin="10dp" />
</RelativeLayout>
and here is the logcat
Process: net.softglobe.rathiclasses, PID: 8894
java.lang.RuntimeException: Unable to start activity ComponentInfo{net.softglobe.rathiclasses/net.softglobe.rathiclasses.AboutusActivity}: java.lang.RuntimeException: Font asset not found fonts/blkchcry.ttf
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2665)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
Caused by: java.lang.RuntimeException: Font asset not found fonts/blkchcry.ttf
at android.graphics.Typeface.createFromAsset(Typeface.java:206)
at net.softglobe.rathiclasses.AboutusActivity.onCreate(AboutusActivity.java:17)
at android.app.Activity.performCreate(Activity.java:6679)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2618)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
I have tried cleaning the project but it failed to resolve the problem. Please help.
Change the location your blkchcry.tttf
from
app>src>main>assets>fonts>blkchcry.ttf.
to
app>src>main>res>font>blkchry.tff
And here's the fun part,
you need to create a custom font file inside the same folder.
Name it as my_font.xml
That's called Creating a Font Family
If you’re using multiple versions of the same font, then you may want to group them together into a font family. A font family is essentially a dedicated XML file where you define each version of the font, along with its associated style and weight attributes.
Here's a demo font file
[Update] which you can simply paste coz I updated the contents.
<?xml version="1.0" encoding="utf-8"?>
<font-family 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">
<font
android:font="#font/blkchry"
android:fontStyle="normal"
android:fontWeight="400"
app:font="#font/blkchry"
app:fontStyle="normal"
app:fontWeight="400"
tools:ignore="UnusedAttribute" />
</font-family>
Because getAssets() will look for an .xml file, not .tff even though you mentioned .tff file in your code.
Paste Font here like this and also make your font name in small case
:-
app > src > main > assets > fonts > blkchry.tff
set Font in java File like this :-
public class AboutusActivity extends Activity {
Context mContext;
Typeface fontblkchry;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mContext = this;
setContentView(R.layout.activity_about_us);
fontblkchry = Typeface.createFromAsset(mContext.getAssets(), "fonts/blkchry.ttf");
textview1.setTypeface(fontblkchry);
}
}
Change your location:
from
app>src>main>assets>fonts>blkchcry.ttf.
to
app>src>main>res>font>blkchry.tff
then change your typeface:
Typeface typeface = getResources().getFont(R.font.blkchcry); textView.setTypeface(typeface);
See more details: https://developer.android.com/guide/topics/ui/look-and-feel/fonts-in-xml
In my case, I was adding a font with Capital Letters and some symbols like -(hyphen).
Try renaming the fonts.
So, just make all letters small, replace hyphen with underscore _
Related
View Binding got released with v3.6.
https://developer.android.com/topic/libraries/view-binding
I am going to use view binding with included layouts.
So I refer to the following answer that is useful.
How to use View Binding with Included Views?
But it doesn't work well.
MainActivity.java
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ActivityMainBinding binding = ActivityMainBinding.inflate(getLayoutInflater());
setContentView(binding.getRoot());
mainBinding.myHeader.foo.setText("this is a test");
}
}
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<include
android:id="#+id/my_header"
layout="#layout/item_header"
android:layout_width="match_parent"
android:layout_height="100dp" />
</LinearLayout>
However, the following error occurs.
2020-04-21 10:18:25.135 30977-30977/com.example.myapplication E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.myapplication, PID: 16941
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.myapplication/com.example.myapplication.MainActivity}: java.lang.NullPointerException: Missing required view with ID: itemId
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3270)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3409)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7356)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
Caused by: java.lang.NullPointerException: Missing required view with ID: itemId
at com.example.myapplication.databinding.ItemHeaderBinding.bind(ItemHeaderBinding.java:73)
at com.example.myapplication.databinding.ActivityMainBinding.bind(ActivityMainBinding.java:60)
at com.example.myapplication.databinding.ActivityMainBinding.inflate(ActivityMainBinding.java:46)
at com.example.myapplication.databinding.ActivityMainBinding.inflate(ActivityMainBinding.java:36)
at com.example.myapplication.MainActivity.onCreate(MainActivity.java:13)
at android.app.Activity.performCreate(Activity.java:7825)
at android.app.Activity.performCreate(Activity.java:7814)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1306)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3245)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3409)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7356)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
What's wrong?
If I remove id of include layout, there are other errors.
I have resolved the problem.
Original item_header.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/item_id"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clickable="false"
android:background="#android:color/transparent">
<TextView
android:id="#+id/foo"
android:layout_gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</FrameLayout>
I removed id of framelayout and the error was soon gone.
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clickable="false"
android:background="#android:color/transparent">
<TextView
android:id="#+id/foo"
android:layout_gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</FrameLayout>
Be careful about using id while using view binding.
This is how I handled included layouts with view binding.
// When view binding is enabled it will create a binding class for each layout, converting the file name to Pascal case.
ActivityMainBinding binding;
IncludedLayout bindingIncludedLayout;
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Inflate the layout as per google doc instructions
binding = ActivityMainBinding.inflate(getLayoutInflater());
// add the inflated view to the Included view.
bindingIncludedLayout = binding;
setContentView(binding.getRoot());
// binding in the main layout
binding.myView.setText("text");
// binding in the included layout
bindingIncludedLayout.textview_name.("additional text")
}
I would strongly recommend learning data binding over view binding, as data binding has a lot more potential, its like view binding on steroids.
This was the best tutorial I came across for learning data binding.
https://www.androidhive.info/android-working-with-databinding/
Its a few years old now but still very helpful in getting you started.
I am trying to create an Activity that extends AppCompatActivity and has two fragments inside of it (one below another - just by using a LinearLayout). I would like the first fragment to extend the PreferenceFragmentCompat class from the support-v7 library.
I followed Google's short example regarding PreferenceFragmentCompat as shown at https://developer.android.com/reference/android/support/v7/preference/PreferenceFragmentCompat.html.
Here is my current code:
GroupDetailsActivity.java
public class GroupDetailsActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_group_details);
GroupDetailsPrefFragment prefFragment = GroupDetailsPrefFragment.newInstance();
GroupDetailsMembersFragment membersFragment = GroupDetailsMembersFragment.newInstance();
FragmentManager fm = getSupportFragmentManager();
fm.beginTransaction()
.add(R.id.flPrefFragment, prefFragment, GroupDetailsPrefFragment.TAG)
.add(R.id.flMembersFragment, membersFragment, GroupDetailsMembersFragment.TAG)
.commit();
}
}
GroupDetailsPrefFragment .java - The problematic fragment
public class GroupDetailsPrefFragment extends PreferenceFragmentCompat {
public static final String TAG = "GroupDetailsPrefFragment";
#Override
public void onCreatePreferences(Bundle bundle, String s) {
setPreferencesFromResource(R.xml.group_details_preferences, s);
}
public static GroupDetailsPrefFragment newInstance() {
GroupDetailsPrefFragment fragment = new GroupDetailsPrefFragment();
return fragment;
}
}
GroupDetailsMembersFragment.java - Completely empty for now..
public class GroupDetailsMembersFragment extends Fragment {
public static final String TAG = "GroupDetailsMembersFragment";
public static GroupDetailsMembersFragment newInstance() {
GroupDetailsMembersFragment fragment = new GroupDetailsMembersFragment();
return fragment;
}
}
activity_group_details.xml - Activity's layout
<?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">
<FrameLayout
android:id="#+id/flPrefFragment"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<FrameLayout
android:id="#+id/flMembersFragment"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
group_details_preferences.xml - The preference XML file
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
<Preference
android:title="#string/remove_me"
android:key="#string/pref_key_settings_remove_me"/>
<Preference
android:title="#string/delete_group"
android:key="#string/pref_key_settings_delete_group"/>
</PreferenceScreen>
Trying to compile and run the code above lead me into a few errors, the first one was regarding a preference theme that was not set. I have quickly scanned the internet and found you need to add the following line into your Activity's theme : <item name="preferenceTheme">#style/PreferenceThemeOverlay.v14.Material</item>
To do so, I was needed to add the support-v14 library to gradle!
Trying to run the code again, lead me to another error, which is the reason I am posting this, and so far I didn't find any way to solve this issue. Here is the crash log :
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.cochat.android/com.cochat.android.ui.groups.details.GroupDetailsActivity}: java.lang.RuntimeException: Content has view with id attribute 'android.R.id.list_container' that is not a ViewGroup class
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2305)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2363)
at android.app.ActivityThread.access$900(ActivityThread.java:161)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1265)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5356)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1265)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.RuntimeException: Content has view with id attribute 'android.R.id.list_container' that is not a ViewGroup class
at android.support.v7.preference.PreferenceFragmentCompat.onCreateView(PreferenceFragmentCompat.java:269)
at android.support.v4.app.Fragment.performCreateView(Fragment.java:2184)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1298)
at android.support.v4.app.FragmentManagerImpl.moveFragmentsToInvisible(FragmentManager.java:2323)
at android.support.v4.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2136)
at android.support.v4.app.FragmentManagerImpl.optimizeAndExecuteOps(FragmentManager.java:2092)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1998)
at android.support.v4.app.FragmentController.execPendingActions(FragmentController.java:388)
at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:607)
at android.support.v7.app.AppCompatActivity.onStart(AppCompatActivity.java:181)
at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1189)
at android.app.Activity.performStart(Activity.java:5441)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2363)
at android.app.ActivityThread.access$900(ActivityThread.java:161)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1265)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5356)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1265)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)
at dalvik.system.NativeStart.main(Native Method)
Been stuck on this for a while now, tried looking up different posts on stackoverflow or other websites, seen some solutions, but for some reason none of them managed to solve my problem.
Edit:
My gradle file contains the following:
compileSdkVersion 25
buildToolsVersion '25.0.2'
...
compile 'com.android.support:preference-v7:25.1.0'
compile 'com.android.support:preference-v14:25.1.0'
Update Jan 02 '17
I've been looking into the source code of PreferenceFragmentCompat and seen it is trying to load the following layout: R.layout.preference_list_fragment.
In the onCreateView() method of the class, it is inflating the layout, and trying to look for the id android.R.id.list_container.
The problem is that there is no such id within the layout.
Here is a code snippet from the PreferenceFragmentCompat:
final View view = themedInflater.inflate(mLayoutResId, container, false);
final View rawListContainer = view.findViewById(AndroidResources.ANDROID_R_LIST_CONTAINER);
if (!(rawListContainer instanceof ViewGroup)) {
throw new RuntimeException("Content has view with id attribute "
+ "'android.R.id.list_container' that is not a ViewGroup class");
}
While
private int mLayoutResId = R.layout.preference_list_fragment;
Still looking for a solution, thanks!
I got past this using the following bugfix:
https://github.com/Gericop/Android-Support-Preference-V7-Fix
Simple 3 step process is to update the app's build.gradle,
Remove:
compile 'com.android.support:preference-v7:25.0.1'
compile 'com.android.support:preference-v14:25.0.1'
Add
compile 'com.takisoft.fix:preference-v7:25.0.1.0'
Then update your app's theme for preferences to use PreferenceFixTheme
(You're already using PreferenceFragmentCompat so good to go).
UPDATE:
On further investigation, with api 25.1.0, AppCompat worked fine once I realized the very strict restrictions on the style for Preferences.
I found this resource very helpful in getting everything set up nicely:
According to this article:
Note that Google changed the needed id from R.id.list_container (in
revision 23.4.0) to android.R.id.list_container (in revision 24.0.0).
Android Studio says the new id requires API 24, but it also works on
older APIs.
ViewGroup in your layout file (activity_group_details.xml) should have id "#android:id/list_container”. to make it work. It can look like this:
<FrameLayout
android:id="#android:id/list_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<FrameLayout
android:id="#+id/flMembersFragment"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
And you have to use this id for your transaction too, note that the other fragment of yours can use any Id for container, only pref is 'special'
So I have found a work around for this, might not be the best, but it is the only thing I have managed to get working! It seems like a problem/bug with the support library..
I have copied the original PreferenceFragmentCompat to a local class, and made minor changed to it. I have replace the following line
private int mLayoutResId = android.support.v7.preference.R.layout.preference_list_fragment;
with
private int mLayoutResId = R.layout.preference_fragment_compat_container;
which is a layout I have made, that it very simple and only contains a container for the list. Here is the layout code:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/list_container"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
Doing the above will allow you to use PreferenceFragmentCompat with the specific gradle settings above (see original post) without any problems.
The down side is that upgrading the support libraries will not upgrade your PreferenceFragmentCompat since it is copied of course. You will need to keep track of the support libraries, and when ever the problem is fixed, you may delete the copied class and use the original one.
If you have any other solutions or ideas please share!
I think you just need to use the support PreferenceScreen and Preferences:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.preference.PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
<android.support.v7.preference.Preference
android:title="#string/remove_me"
android:key="#string/pref_key_settings_remove_me"/>
<android.support.v7.preference.Preference
android:title="#string/delete_group"
android:key="#string/pref_key_settings_delete_group"/>
</android.support.v7.preference.PreferenceScreen>
Checked out my answer here https://stackoverflow.com/a/53560798/1247248
you need a layout resource with that id
Adding this line to your AppTheme in the styles.xml file should do the trick:
<item name="preferenceTheme">#style/PreferenceThemeOverlay</item>
I'm trying to include different layouts in my View depending on the parent Theme.
Following the idea:
attrs.xml
<attr name="themeLayout" format="reference" />
styles.xml
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<item name="themeLayout">#layout/layout_a</item>
</style>
<style name="AppThemeSecond" parent="Theme.AppCompat.Light.DarkActionBar">
<item name="themeLayout">#layout/layout_b</item>
</style>
activity.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"
tools:context=".MainActivity">
<include layout="?attr/themeLayout" />
</RelativeLayout>
When I run the Code above I'll get the following Exception:
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.my.package/com.my.package.MainActivity}: android.view.InflateException: You must specifiy a valid layout reference. The layout ID ?attr/themeLayout is not valid.
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2325)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: android.view.InflateException: You must specifiy a valid layout reference. The layout ID ?attr/themeLayout is not valid.
at android.view.LayoutInflater.parseInclude(LayoutInflater.java:866)
What am I doing wrong? Is it possible to do this at all?
Note #1: I set the Theme of my MainActivity to android:theme="#style/AppTheme"
Note #2: In the Design-View of the Layout Editor everything works as expected. If I switch the Theme, the include gets updated properly.
See the following Screenshots as well:
Unfortunately this is not possible but I really like the idea. I have tracked the flow of LayoutInflater and it requieres the layout attribute to be TypedValue.TYPE_REFERENCE which means ?attr is not allowed. They even left a comment in the method to explain.
public int getAttributeResourceValue(int idx, int defaultValue) {
int t = nativeGetAttributeDataType(mParseState, idx);
// Note: don't attempt to convert any other types, because
// we want to count on aapt doing the conversion for us.
if (t == TypedValue.TYPE_REFERENCE) {
return nativeGetAttributeData(mParseState, idx);
}
return defaultValue;
}
android.content.res.XmlBlock.java:385
Basically you have done nothing wrong -- the inflation in Preview works differently which caused the confusion.
Since Lamorak explained everything in detail in his "in-depth" answer I guess it's save to say that there isn't any solution with the <include /> tag for your problem.
So following a different approach that worked in my test project:
#1 - Replace <include /> with <ViewStub />
<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=".MainActivity">
<ViewStub
android:id="#+id/myStub"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inflatedId="#+id/myInflatedStub"
android:layout="?attr/themeLayout" />
</RelativeLayout>
#2 - Inflate the ViewStub
ViewStub myStub = (ViewStub) findViewById(R.id.myStub);
myStub.inflate();
Any drawbacks with this method? Well you won't see the ViewStub-Layout in your Design-Tab and using the <merge /> tag won't work.
After some research, I found this problem-"has been fixed in Android23. But bellows, exception will be thrown.
I have an app that is about a year old, is on the Play store in beta, has gone through dozens of revisions. All of a sudden I'm getting an error:
Could not find a method onClick_Foo(View) in the activity class
android.view.ContextThemeWrapper for onClick handler on view class
android.widget.Button with id 'Foo_Button'
I'm getting this error on every one of the 7 buttons defined in my XML. Since yesterday I've updating appcompat-v7 from 21.0.3 to 22.0.0 but also upgraded my testing device from KitKat to Lollipop for the first time.
I've double-checked spellings, capitalizations, none of the usual suspects explains this. Here's a sample of the relevant code. Let me know if you feel more would be helpful. (The activity has 915 lines of code and the xml 186, so don't ask for the whole thing). Testing on a Verizon Note 4 running Lollipop 5.0.1
activity_pick.xml:
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:theme="#style/AppTheme"
tools:context="com.myapp.Pick"
android:layout_height="match_parent"
android:layout_width="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin"
android:orientation="vertical">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/Ratings_Button"
android:textSize="16dp"
android:text="#string/Pick_Ratings_Button"
android:onClick="onClick_Ratings"
android:background="#android:drawable/btn_default"/>
</LinearLayout>
</ScrollView>
Pick.java:
public class Pick_Restaurant extends ActionBarActivity {
public void onClick_Ratings (View v) {
Intent intent = new Intent(mContext, Ratings.class);
startActivityForResult(intent,RATINGS);
}
}
build.gradle:
apply plugin: 'com.android.application'
android {
compileSdkVersion 22
buildToolsVersion "22.0.1"
defaultConfig {
minSdkVersion 15
targetSdkVersion 22
versionCode 59
versionName "0.6.4"
}
...
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
compile 'com.android.support:appcompat-v7:22.0.0'
compile 'com.google.android.gms:play-services:7.0.0'
compile files('libs/mobileservices-1.1.5.jar')
}
Full Error on Log:
04-08 17:06:40.578 3508-3508/com.myapp.debug E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.myapp.debug, PID: 3508
java.lang.IllegalStateException: Could not find a method onClick_Ratings(View) in the activity class android.view.ContextThemeWrapper for onClick handler on view class android.widget.Button with id 'Ratings_Button'
at android.view.View$1.onClick(View.java:4234)
at android.view.View.performClick(View.java:5191)
at android.view.View$PerformClick.run(View.java:20916)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:5974)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1388)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1183)
Caused by: java.lang.NoSuchMethodException: onClick_Ratings [class android.view.View]
at java.lang.Class.getMethod(Class.java:665)
at android.view.View$1.onClick(View.java:4227)
at android.view.View.performClick(View.java:5191)
at android.view.View$PerformClick.run(View.java:20916)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:5974)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1388)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1183)
It looks like this is a new issue with Android 5.0.
From this anwer, removing the Theme from the layout xml fixed this issue for them.
So in your case, remove the theme from your layout:
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools">
<!--android:theme="#style/AppTheme"--> <!-- Remove this -->
<!--................-->
</ScrollView>
And add the theme in the AndroidManifest.xml instead:
android:theme="#android:style/AppTheme"
I have just answered a similar question here
Basically, since Android 5.0 individual views can be themed.
To facilitate this, a ContextThemeWrapper is used to modify the underlying theme assigned to the Activity and assigned as the Context of the View. Since this Context is not your Activity anymore (the Activity has to be separate because it still has to return the original theme) the callbacks don't exist and you get the error you see.
If you don't really want to theme individual views the obvious solution is to not do so and theme the activity instead, as already suggested.
If you do indeed want to theme individual views, it appears that the android:onClick attribute cannot be used and you will have to fall back to manually assign an OnClickListener.
The question is, why did this work pre Lollipop? I can only speculate that because the functionality to theme individual views didn't exist, applying a theme attribute to a view would just change the default theme on the Activity as well.
Such things usually happens when you declare onClick in xml like you did:
android:onClick="onClick_Ratings"
Just make sure you are using this layout in that activity. Because the exception is clearly saying that your activity don't have the corresponding method which you did show you have:
public void onClick_Ratings (View v) {
Intent intent = new Intent(mContext, Ratings.class);
startActivityForResult(intent,RATINGS);
}
Also I guess you should declare the activity in your xml like:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".SendMessageActivity">
And actually log says:
Could not find a method onClick_Ratings(View) in the activity class
android.view.ContextThemeWrapper
there is something wrong since android.view.ContextThemeWrapper is not an Activity and not the activity from your xml com.myapp.Pick (I assume Pick is an activity and not the fragment). Maybe try to clean up the project, ivalidate caches and restart.
If nothing helps I suggest you to return back to previuos version of support lib you'd mentioned OR to set onClickListener in code instead of xml.
Removing android:theme works. But this is caused because using android:onclick in xml. If you use onClick in Java file, you can still use android:theme.
According to your code,
activity_pick.xml [Remove onclick here]
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/Ratings_Button"
android:textSize="16dp"
android:text="#string/Pick_Ratings_Button"
android:background="#android:drawable/btn_default" />
Go to your Java File, that is, pick.java in your case:
final Button button = (Button) findViewById(R.id.Ratings_Button);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent activityChangeIntent = new Intent(CurrentActivity.this, SecondActivity.class);
SplashScreen.this.startActivity(activityChangeIntent);
}
});
Experienced the same error, app has stopped working, when material button was clicked programmatically helped me. Check it out :)
I have got an idea to get rid of some coding when we do initializion of views.
When we create an xml layout in android. At that movement same name class is created with UpperCase Letters with a dialogue with permission. And as i created views with ids. It should create Views and initialize them automatically.
for e.g
close.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<Button
android:id="#+id/closeBtn"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/close_img" />
<TextView
android:id="#+id/closeText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Testing Text" />
</LinearLayout>
And automatically generated java code should be.
public class Close extends Activity
{
TextView CloseText;
Button CloseBtn;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
CloseText = (TextView)findViewById(R.id.closeText);
CloseBtn = (Button)findViewById(R.id.closeBtn);
}
}
I can read xml and do the other stuff as I explained. But how could i add this module to eclipse and How could i create a service which work in Background all the time in eclipse.
Suggest me how to add this module(Plugin) to eclipse and i am going to use JAXB to generate Java Objects from XML document. Is there any better option.
Here in this website i find that just paste the xml and you will get your java code ready for activity class.
i had attached the link