CODEWITHSUNDEEP
javaandroidandroid-studio
Matthew
Matthew

Reputation: 35

startActivity(intent); seems to always crash the app

When the app opens up, it successfully opens and runs our 'MenuActivity.java'. But when we click a button to launch a separate activity, "MainActivity.java', the app just crashes no errors or trace stack or anything. Here is MenuActivity


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_menu);

        Button button = findViewById(R.id.buttonDiceRoller);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent = new Intent(MenuActivity.this, MainActivity.class);
                startActivity(intent);
                finish();
            }
        });
    }
}

Here is the beginning of MainActivity 


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

and here is our android manifest file

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.cs125final">

    <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=".MenuActivity"
            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>
        <activity
            android:name=".MainActivity"
            android:label="CS125Final" >
        </activity>
    </application>

</manifest>

This is what the app looks like when you run it. If you want to view it not really necesarry

And when you click the diceRoller button the app closes and the screen says "Your app keeps stopping".

Why is this happening? massive logcat:

2019-12-09 17:37:53.628 12050-12050/com.example.cs125final E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.cs125final, PID: 12050
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.cs125final/com.example.cs125final.MainActivity}: java.lang.IllegalStateException: This Activity already has an action bar supplied by the window decor. Do not request Window.FEATURE_SUPPORT_ACTION_BAR and set windowActionBar to false in your theme to use a Toolbar instead.
        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.IllegalStateException: This Activity already has an action bar supplied by the window decor. Do not request Window.FEATURE_SUPPORT_ACTION_BAR and set windowActionBar to false in your theme to use a Toolbar instead.
        at androidx.appcompat.app.AppCompatDelegateImpl.setSupportActionBar(AppCompatDelegateImpl.java:345)
        at androidx.appcompat.app.AppCompatActivity.setSupportActionBar(AppCompatActivity.java:130)
        at com.example.cs125final.MainActivity.onCreate(MainActivity.java:25)
        at android.app.Activity.performCreate(Activity.java:7802)
        at android.app.Activity.performCreate(Activity.java:7791)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1299)
        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) 
2019-12-09 17:37:53.636 12050-12050/com.example.cs125final I/Process: Sending signal. PID: 12050 SIG: 9

Upvotes: 0

Views: 82

Answers (2)

ismail alaoui
ismail alaoui

Reputation: 6073

in your style , define the parent this way 

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">

Upvotes: 1

Matthew
Matthew

Reputation: 35

Both themes need to be set to

android:theme="@style/AppTheme.NoActionBar"

Upvotes: 2

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