My android studio project works finely on lollipop but crashes while testing on kitkat devices. it has a material view pager and while opening activity that has material view pager the app just force close on kit kat device.
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.production.iedc.helo, PID: 12711
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.production.iedc.helo/com.production.iedc.helo.MainActivity}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2338)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5292)
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:824)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:640)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
at android.support.v7.app.AppCompatDelegateImplV7.createSubDecor(AppCompatDelegateImplV7.java:310)
at android.support.v7.app.AppCompatDelegateImplV7.ensureSubDecor(AppCompatDelegateImplV7.java:279)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:253)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109)
at com.production.iedc.helo.MainActivity.onCreate(MainActivity.java:80)
at android.app.Activity.performCreate(Activity.java:5264)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1088)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2302)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)?
at android.app.ActivityThread.access$800(ActivityThread.java:151)?
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)?
at android.os.Handler.dispatchMessage(Handler.java:110)?
at android.os.Looper.loop(Looper.java:193)?
at android.app.ActivityThread.main(ActivityThread.java:5292)?
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:824)?
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:640)?
at dalvik.system.NativeStart.main(Native Method)?
Build.gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion "23.0.2"
defaultConfig {
applicationId "com.production.iedc.helo"
minSdkVersion 14
targetSdkVersion 23
versionCode 1
versionName "1.0"
multiDexEnabled true
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.1.1'
compile 'com.android.support:design:23.1.1'
compile ('com.github.florent37:materialviewpager:1.0.8@aar'){
transitive=true
}
compile 'com.squareup.picasso:picasso:2.3.3'
compile 'com.github.paolorotolo:appintro:3.4.0'
compile 'com.android.support:multidex:1.0.0'
}
Main activity
package com.production.iedc.helo;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Color;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.GradientDrawable;
import android.media.Image;
import android.preference.PreferenceManager;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentStatePagerAdapter;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.support.v7.app.ActionBarDrawerToggle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.Toolbar;
import com.github.florent37.materialviewpager.MaterialViewPager;
import com.squareup.picasso.Picasso;
public class MainActivity extends ActionBarActivity {
MaterialViewPager materialViewPager;
View headerLogo;
ImageView headerLogoContent;
DrawerLayout mDrawer;
ActionBarDrawerToggle mDrawerToggle;
android.support.v7.widget.Toolbar toolbar;
@Override
protected void onCreate(Bundle savedInstanceState) {
// Declare a new thread to do a preference check
Thread t = new Thread(new Runnable() {
@Override
public void run() {
// Initialize SharedPreferences
SharedPreferences getPrefs = PreferenceManager
.getDefaultSharedPreferences(getBaseContext());
// Create a new boolean and preference and set it to true
boolean isFirstStart = getPrefs.getBoolean("firstStart", true);
// If the activity has never started before...
if (isFirstStart) {
// Launch app intro
Intent i = new Intent(MainActivity.this, DefaultIntro.class);
startActivity(i);
// Make a new preferences editor
SharedPreferences.Editor e = getPrefs.edit();
// Edit preference to make it false because we don't want this to run again
e.putBoolean("firstStart", false);
// Apply changes
e.apply();
}
}
});
// Start the thread
t.start();
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//4 onglets
final int tabCount = 4;
//les vues définies dans @layout/header_logo
headerLogo = findViewById(R.id.headerLogo);
headerLogoContent = (ImageView) findViewById(R.id.headerLogoContent);
//le MaterialViewPager
this.materialViewPager = (MaterialViewPager) findViewById(R.id.materialViewPager);
toolbar = materialViewPager.getToolbar();
mDrawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (toolbar != null) {
setSupportActionBar(toolbar);
final ActionBar actionBar = getSupportActionBar();
if (actionBar != null) {
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setDisplayShowHomeEnabled(true);
actionBar.setDisplayShowTitleEnabled(true);
actionBar.setDisplayUseLogoEnabled(false);
actionBar.setHomeButtonEnabled(true);
}
}
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawer, 0, 0);
mDrawer.setDrawerListener(mDrawerToggle);
materialViewPager.getViewPager().setAdapter(new FragmentStatePagerAdapter(getSupportFragmentManager()) {
@Override
public Fragment getItem(int position) {
//je créé pour chaque onglet un RecyclerViewFragment
return RecyclerViewFragment.newInstance();
}
@Override
public int getCount() {
return 4;
}
//le titre à afficher pour chaque page
@Override
public CharSequence getPageTitle(int position) {
switch (position % 4) {
case 0:
return "ACADEMICS";
case 1:
return "NEWS FEEDS";
case 2:
return "EVENTS";
case 3:
return "MISC";
default:
return "Page " + position;
}
}
int oldItemPosition = -1;
@Override
public void setPrimaryItem(ViewGroup container, int position, Object object) {
super.setPrimaryItem(container, position, object);
//seulement si la page est différente
if (oldItemPosition != p
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