Fragment in android, app not installing

Question

Android studio is not able to run the code in my phone by building apk. When i run the code, apk does not get install on my phone but instead a blank white screen flashes and goes in the background. If i manually create the apk and put in my phone, then it is not able to intall. I dont get any install failure error but the installation process is not able to complete. I dont find such problem for any other applications which i made with android studio.

I want create two dynamic fragments in a single activity. I have a single container as relative layout. I have 2 buttons in my main activity as Red and Blue. When i click on Red button, Red fragment should be loaded. And when i click on Blue button, Blue fragment should be loaded in the container.

Code for the same is -

mainactivity.java

import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);    
        FragmentManager fragmentManager = getSupportFragmentManager();
        FragmentTransaction transaction =
                fragmentManager.beginTransaction();   
        Red r = new Red(); 
        transaction.add(R.id.relativeLayout, r);
        transaction.commit();
    }  
    public void redclick(View v)
    {
        FragmentManager fragmentManager = getSupportFragmentManager();
        FragmentTransaction transaction =
                fragmentManager.beginTransaction();

        Red r = new Red();

        transaction.replace(R.id.relativeLayout, r);
        transaction.commit();
    }   
    public void blueclick(View v)
    {
        FragmentManager fragmentManager = getSupportFragmentManager();
        FragmentTransaction transaction =
                fragmentManager.beginTransaction();

        Blue b = new Blue(); 
        transaction.replace(R.id.relativeLayout, b);
        transaction.commit();
    }
}

red.java

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;


public class Red extends Fragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.red_layout, container, false);
    }

}

blue.java

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;


public class Blue extends Fragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.blue_layout, container, false);
    }

}

activity_main.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="com.example.deva.fragment.MainActivity">

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:onClick="redclick"
        android:text="Red"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.236"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.12" />

    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Blue"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.773"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.12"
        android:onClick="blueclick"/>

    <FrameLayout
        android:id="@+id/relativeLayout"
        android:layout_width="244dp"
        android:layout_height="301dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.69">

    </FrameLayout>
</android.support.constraint.ConstraintLayout>

i m getting following exception in logcat -

02-21 10:31:58.454 25675-25675/? E/AndroidRuntime: FATAL EXCEPTION: main
                                                   Process: com.example.deva.fragment, PID: 25675
                                                   java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.deva.fragment/com.example.deva.fragment.MainActivity}: android.view.InflateException: Binary XML file line #0: Error inflating class fragment
                                                       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2200)
                                                       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2249)
                                                       at android.app.ActivityThread.access$800(ActivityThread.java:141)
                                                       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1212)
                                                       at android.os.Handler.dispatchMessage(Handler.java:102)
                                                       at android.os.Looper.loop(Looper.java:136)
                                                       at android.app.ActivityThread.main(ActivityThread.java:5113)
                                                       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:796)
                                                       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:612)
                                                       at dalvik.system.NativeStart.main(Native Method)
                                                    Caused by: android.view.InflateException: Binary XML file line #0: Error inflating class fragment
                                                       at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:716)
                                                       at android.view.LayoutInflater.rInflate(LayoutInflater.java:758)
                                                       at android.view.LayoutInflater.inflate(LayoutInflater.java:495)
                                                       at android.view.LayoutInflater.inflate(LayoutInflater.java:400)
                                                       at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
                                                       at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:287)
                                                       at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139)
                                                       at com.example.deva.fragment.MainActivity.onCreate(MainActivity.java:14)
                                                       at android.app.Activity.performCreate(Activity.java:5242)
                                                       at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
                                                       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2164)
                                                       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2249) 
                                                       at android.app.ActivityThread.access$800(ActivityThread.java:141) 
                                                       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1212) 
                                                       at android.os.Handler.dispatchMessage(Handler.java:102) 
                                                       at android.os.Looper.loop(Looper.java:136) 
                                                       at android.app.ActivityThread.main(ActivityThread.java:5113) 
                                                       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:796) 
                                                       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:612) 
                                                       at dalvik.system.NativeStart.main(Native Method) 
                                                    Caused by: java.lang.RuntimeException: com.example.deva.fragment.MainActivity@42965778 must implement OnFragmentInteractionListener
                                                       at com.example.deva.fragment.Barcelona.onAttach(Barcelona.java:66)
                                                       at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1363)
                                                       at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1640)
                                                       at android.support.v4.app.FragmentManagerImpl.addFragment(FragmentManager.java:1896)
                                                       at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:3673)
                                                       at android.support.v4.app.FragmentController.onCreateView(FragmentController.java:111)
                                                       at android.support.v4.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:338)
                                                       at android.support.v4.app.BaseFragmentActivityApi14.onCreateView(BaseFragmentActivityApi14.java:39)
                                                       at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:67)
                                                       at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:692)
                                                       at android.view.LayoutInflater.rInflate(LayoutInflater.java:758) 
                                                       at android.view.LayoutInflater.inflate(LayoutInflater.java:495) 
                                                       at android.view.LayoutInflater.inflate(LayoutInflater.java:400) 
                                                       at android.view.LayoutInflater.inflate(LayoutInflater.java:353) 
                                                       at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:287) 
                                                       at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139) 
                                                       at com.example.deva.fragment.MainActivity.onCreate(MainActivity.java:14) 
                                                       at android.app.Activity.performCreate(Activity.java:5242) 
                                                       at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) 
                                                       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2164) 
                                                       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2249) 
                                                       at android.app.ActivityThread.access$800(ActivityThread.java:141) 
                                                       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1212) 
                                                       at android.os.Handler.dispatchMessage(Handler.java:102) 
                                                       at android.os.Looper.loop(Looper.java:136) 
                                                       at android.app.ActivityThread.main(ActivityThread.java:5113) 
                                                       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:796) 
                                                       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:612) 
                                                       at dalvik.system.NativeStart.main(Native Method)

manifest file -

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.deva.fragment">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

build.gradle (app) -

apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    defaultConfig {
        applicationId "com.example.deva.fragment"
        minSdkVersion 14
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:26.1.0'
    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
    implementation 'com.android.support:support-v4:26.1.0'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:0.5'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:2.2.2'
}

`R.id.relativeLayout` is it your framelayout id of something else? — Hemant Parmar, Feb 21 '18 at 04:48
fragment loads in container that should be in framelayout. try to change this. — Hemant Parmar, Feb 21 '18 at 04:50
changed it to frame layout, but still same results... @Hemant Parmar — Devashish Prasad, Feb 21 '18 at 04:52
Second, you should use supportFragmentManager instead of fragmentManager to work with support fragments, so implement the following way: have look [this](https://stackoverflow.com/a/44293887/5110595) — Hemant Parmar, Feb 21 '18 at 04:53
i am using support fragment manager all over in the code.... Where m i missing it??@Hemant Parmar — Devashish Prasad, Feb 21 '18 at 04:56
@HemantParmar I don't think you read the question. The issue isn't the loading of the fragments. It's installing the app — OneCricketeer, Feb 21 '18 at 04:58
@trex1999 i know but i read the code first, found something wrong thats why i told him first to correct this. — Hemant Parmar, Feb 21 '18 at 05:00
@HemantParmar Ok, well, if the app isn't running (because it isn't installing) there is also no logcat — OneCricketeer, Feb 21 '18 at 05:03
guyz i have shared main_activity.xml and logcat..... i am getting an exception in logcat.... why is that so??? — Devashish Prasad, Feb 21 '18 at 05:07
`com.example.deva.fragment.MainActivity` does your main activity exist in this package ? — Hemant Parmar, Feb 21 '18 at 05:11
Nothing wrong with these files. I just copy-pasted files to my local project. Maybe we should check for red_layout file? — Emre Aktürk, Feb 21 '18 at 05:34

OneCricketeer · Accepted Answer · 2018-02-21T05:30:07.033

1

The error came from the Barcelona Fragment, not Red/Blue

MainActivity@42965778 must implement OnFragmentInteractionListener
   at com.example.deva.fragment.Barcelona.onAttach

I think the code you posted should work fine, but you either need to

Not use the Barcelona Fragment
Do what it says, and implement that interface
Remove the throw new RuntimeException part of that Fragment's onAttach method.

edited Feb 21 '18 at 05:30

answered Feb 21 '18 at 05:19

OneCricketeer

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Well, your logcat says otherwise, so I'm not sure what to tell you – OneCricketeer Feb 21 '18 at 05:24
@trex1999 You could still create and implement that interface. It might just make the app work. If not, then you should definitely try to clean the project. – OneCricketeer Feb 21 '18 at 05:29

Fragment in android, app not installing

1 Answers1