My android app runs on a sdk 23 emulator just perfectly, but when I tried to run it on a tablet with sdk version 21, I got this exception:
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.detactapp.detactapp/com.example.detactapp.detactapp.Home}: java.lang.RuntimeException: Failed to resolve attribute at index 13
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2298)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
at android.app.ActivityThread.access$800(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
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:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
Caused by: java.lang.RuntimeException: Failed to resolve attribute at index 13
at android.content.res.TypedArray.getDrawable(TypedArray.java:747)
at android.view.View.<init>(View.java:3730)
at android.widget.ImageView.<init>(ImageView.java:139)
at android.widget.ImageButton.<init>(ImageButton.java:86)
at android.widget.ImageButton.<init>(ImageButton.java:82)
at android.support.v7.widget.Toolbar.ensureNavButtonView(Toolbar.java:1036)
at android.support.v7.widget.Toolbar.setNavigationOnClickListener(Toolbar.java:826)
at android.support.v7.widget.ToolbarWidgetWrapper.<init>(ToolbarWidgetWrapper.java:188)
at android.support.v7.widget.ToolbarWidgetWrapper.<init>(ToolbarWidgetWrapper.java:91)
at android.support.v7.app.ToolbarActionBar.<init>(ToolbarActionBar.java:73)
at android.support.v7.app.AppCompatDelegateImplV7.setSupportActionBar(AppCompatDelegateImplV7.java:205)
at android.support.v7.app.AppCompatActivity.setSupportActionBar(AppCompatActivity.java:99)
at com.example.detactapp.detactapp.Home.onCreate(Home.java:32)
at android.app.Activity.performCreate(Activity.java:5937)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2251)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
at android.app.ActivityThread.access$800(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
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:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
This is my build.gradle:
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:1.2.3'
}
}
apply plugin: 'com.android.application'
repositories {
jcenter()
}
android {
compileSdkVersion 23
buildToolsVersion "23.0.2"
defaultConfig {
applicationId "com.example.detactapp.detactapp"
minSdkVersion 21
targetSdkVersion 23
versionCode 1
versionName "0.1"
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_6
targetCompatibility JavaVersion.VERSION_1_6
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:recyclerview-v7:23.1.1'
compile 'com.android.support:appcompat-v7:23.1.1'
compile 'com.android.support:support-v4:23.1.1'
compile 'com.jjoe64:graphview:4.0.1'
}
And this my Home.java:
public class Home extends AppCompatActivity {
...
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar); //Exception throws here
}
And the layout files for the activity: At first the navigation drawer activity_home.xml:
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Home">
<include layout="@layout/home"/>
<android.support.v7.widget.RecyclerView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/views_list"
android:layout_width="280dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:choiceMode="singleChoice"
android:scrollbars="vertical"
android:background="@android:color/white">
</android.support.v7.widget.RecyclerView>
</android.support.v4.widget.DrawerLayout>
home.xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<include layout="@layout/toolbar"/>
<ScrollView android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/toolbar">
<LinearLayout android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/container_frame"
android:orientation="vertical"
android:clipToPadding="false"/>
</ScrollView >
</RelativeLayout>
And toolbar.xml:
<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="@color/colorPrimary"
android:elevation="4dp"
android:theme="@style/DetactTheme">
</android.support.v7.widget.Toolbar>
If anyone knows the solution to this problem, I'd love to hear about it :) Thank you!