cannot setup tool bar with text title?

Question

I have a page inside Android studio , i'm trying to do a site show inside. But the problem is that I try to put a custom address in the address bar from the top but I have an error in the code with a note I think the same code works within other classes , and everything's right in other classes. But in this code, there's a mistake.

public class teamsnews extends AppCompatActivity {

    private Toolbar toolbar;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_teamsnews);
        WebView htmlWebView = (WebView)findViewById(R.id.webView);
        //  htmlWebView.setWebViewClient(new CustomWebViewClient());
        WebSettings webSetting = htmlWebView.getSettings();
        webSetting.setJavaScriptEnabled(true);
        webSetting.setDisplayZoomControls(true);
        htmlWebView.loadUrl("https://www.yallakora.com/Match-Center/%D9%85%D8%B1%D9%83%D8%B2-%D8%A7%D9%84%D9%85%D8%A8%D8%A7%D8%B1%D9%8A%D8%A7%D8%AA#nav-burgermenu");
        SetupToolBar();
    }

    private void SetupToolBar() {
        toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setTitle("");
        TextView textView = findViewById(R.id.toolbar_title);
        textView.setText("الدورى والبطولات");
    }

}


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

    <uses-permission android:name="android.permission.CALL_PHONE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

    <application
        android:name=".utility.FirebaseOffline"
        android:allowBackup="true"
        android:icon="@drawable/logoy"
        android:label="@string/app_name"
        android:supportsRtl="false"
        android:theme="@style/AppTheme"
        tools:replace="android:supportsRtl">

        <activity android:name=".teamsnews"
            android:parentActivityName=".DetailsActivity"
            android:screenOrientation="portrait"
            android:theme="@style/AppTheme.NoActionBar" />

        <activity
            android:name=".Act_tutoriial"
            android:screenOrientation="portrait"
            android:theme="@style/AppTheme.NoActionBar"/>

        <activity
            android:name=".DawraElramadnia"
            android:launchMode="singleTop"
            android:parentActivityName=".DetailsActivity"
            android:screenOrientation="portrait"
            android:theme="@style/AppTheme.NoActionBar"/>


        <activity
            android:name=".SplashScreen"
            android:launchMode="singleTop"
            android:theme="@style/AppTheme.NoActionBar">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <meta-data
            android:name="com.google.android.gms.version"
            android:value="@integer/google_play_services_version" /> <!-- > for notification handler<! -->
        <meta-data
            android:name="com.onesignal.NotificationOpened.DEFAULT"
            android:value="DISABLE" />

        <activity android:name="com.soundcloud.android.crop.CropImageActivity" />
        <activity
            android:name=".utility.TutorialActivity"
            android:screenOrientation="portrait"
            android:theme="@style/AppTheme.NoActionBar" />

        <activity
            android:name=".MainActivity"
            android:launchMode="singleTop"
            android:screenOrientation="portrait"
            android:theme="@style/AppTheme.NoActionBar" />

        <activity
            android:name=".DetailsActivity"
            android:launchMode="singleTop"
            android:parentActivityName=".MainActivity"
            android:screenOrientation="portrait"
            android:theme="@style/AppTheme.NoActionBar" />

        <activity
            android:name=".CommentActivity"
            android:parentActivityName=".DetailsActivity"
            android:screenOrientation="portrait"
            android:theme="@style/AppTheme.NoActionBar" />
        <activity
            android:name=".ReservationActivity"
            android:parentActivityName=".DetailsActivity"
            android:screenOrientation="portrait"
            android:theme="@style/AppTheme.NoActionBar" />
        <activity
            android:name=".utility.AddStudiam"
            android:screenOrientation="portrait"
            android:theme="@style/AppTheme.NoActionBar" />
        <activity
            android:name=".CombineTeam"
            android:parentActivityName=".DetailsActivity"
            android:screenOrientation="portrait"
            android:theme="@style/AppTheme.NoActionBar" />
        <activity
            android:name=".GiftsAcivity"
            android:launchMode="singleTop"
            android:parentActivityName=".DetailsActivity"
            android:screenOrientation="portrait"
            android:theme="@style/AppTheme.NoActionBar" />
    </application>

</manifest>

/// style 
<resources>
    <!-- Base application theme. -->
    <style name="AppTheme"
        parent="Theme.AppCompat.Light.DarkActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>

        <item name="android:windowNoTitle">true</item>
        <item name="android:windowActionBar">false</item>
        <item name="android:windowFullscreen">true</item>
        <item name="android:windowContentOverlay">@null</item>
    </style>





    <style name="NoActionBarTheme"
        parent="Theme.AppCompat.Light.NoActionBar"


        />

    <style name="myRatingBar"
        parent="@style/Base.Widget.AppCompat.RatingBar.Small">
    </style>

    <style name="CustomRatingBar"
        parent="@android:style/Widget.Holo.RatingBar.Indicator">
        <item name="android:progressDrawable">@drawable/ratingbar</item>
        <item name="android:maxHeight">32dp</item>
    </style>
    <style name="CustomRatingBar2"
        parent="@android:style/Widget.Holo.RatingBar.Indicator">
        <item name="android:progressDrawable">@drawable/ratingbar_yellow</item>
        <item name="android:maxHeight">32dp</item>
    </style>
    <!-->
    !-->
    <style name="AppTheme.NoActionBar">
        <item name="windowActionBar">false</item>
        <item name="windowNoTitle">true</item>
        <item name="android:windowFullscreen">true</item>
    </style>

    <style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />

    <style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />

    <style name="CustomRatingBarsmall"
        parent="@android:style/Widget.Holo.RatingBar.Small">
        <item name="android:progressDrawable">@drawable/ratingbarsmall</item>
    </style>


    <style name="ToolbarTheme" parent="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
        <!-- android:textColorPrimary is the color of the title text in the Toolbar  -->
        <item name="android:textColorPrimary">@android:color/holo_blue_light</item>
        <!-- actionMenuTextColor is the color of the text of action (menu) items  -->
        <item name="actionMenuTextColor">@android:color/holo_green_light</item>
        <!-- Tints the input fields like checkboxes and text fields -->


        <!-- Enable these below if you want clicking icons to trigger a ripple effect -->
        <!--
        <item name="selectableItemBackground">?android:selectableItemBackground</item>
        <item name="selectableItemBackgroundBorderless">?android:selectableItemBackground</item>
        -->
    </style>

    <!-- This configures the styles for the title within the Toolbar  -->
    <style name="Toolbar.TitleText" parent="TextAppearance.Widget.AppCompat.Toolbar.Title">
    <item name="android:textSize">21sp</item>
    <item name="android:textStyle">italic</item>
    </style>
</resources>


// -------- Logecat error: 

    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.otherHand.mal3abak/com.otherHand.teamsnews}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.app.ActionBar.setDisplayHomeAsUpEnabled(boolean)' on a null object reference
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2695)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2769)
        at android.app.ActivityThread.access$900(ActivityThread.java:177)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1430)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:135)
        at android.app.ActivityThread.main(ActivityThread.java:5910)
        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:1405)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1200)
     Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.app.ActionBar.setDisplayHomeAsUpEnabled(boolean)' on a null object reference
        at com.otherHand.teamsnews.SetupToolBar(teamsnews.java:33)
        at com.otherHand.teamsnews.onCreate(teamsnews.java:27)
        at android.app.Activity.performCreate(Activity.java:6178)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)

score 0 · Answer 1 · answered May 01 '19 at 23:09

0

What I think you need to do is use the TextView text you're setting as the text you want into the getSupportActionBar().setTitle() function. Why set it empty if not use it? Look at this and The docs for setTitle.

answered May 01 '19 at 23:09

Mon

3
1
4

kamyar haqqani · Answer 2 · 2019-05-01T23:41:43.570

0

getsupportactionbar returns null when there is no action bar; set your Activity's theme to something with an ActionBar.

<activity android:name=".Your_activity_name"
        android:parentActivityName=".DetailsActivity"
        android:screenOrientation="portrait"
        android:theme="@style/some_theme_with_an_action_bar" />

edited May 01 '19 at 23:41

answered May 01 '19 at 23:33

kamyar haqqani

748
6
19

what theme did you set it to? does it have an actionbar? – kamyar haqqani May 02 '19 at 07:44
Please , look at my code on the up , you will all things – ahmed hassn May 02 '19 at 14:27

cannot setup tool bar with text title?

2 Answers2