问题：
在android应用程序中添加工具栏[重复]
贺君浩
我想在android应用程序中添加工具栏，但我的StudentDashboard活动中出现了此错误。在git上推送我的应用程序后，在运行时使用java。我找不到它背后的问题。
FATAL EXCEPTION: main
Process: com.technerdshub.vusocial, PID: 31319
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.technerdshub.vusocial/com.technerdshub.vusocial.Activities.StudentDashboardActivity}: 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:2693)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2758)
at android.app.ActivityThread.access$900(ActivityThread.java:177)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1448)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:5942)
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:1389)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1184)
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 android.support.v7.app.AppCompatDelegateImplV7.setSupportActionBar(AppCompatDelegateImplV7.java:198)
at android.support.v7.app.AppCompatActivity.setSupportActionBar(AppCompatActivity.java:130)
at com.technerdshub.vusocial.Activities.StudentDashboardActivity.onCreate(StudentDashboardActivity.java:51)
at android.app.Activity.performCreate(Activity.java:6289)
学生仪表板ctivity.java
package com.technerdshub.vusocial.Activities;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.support.design.widget.TabLayout;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.widget.Toolbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import com.google.android.gms.appindexing.Action;
import com.google.android.gms.appindexing.AppIndex;
import com.google.android.gms.common.api.GoogleApiClient;
import com.technerdshub.vusocial.Fragments.TaskFragment;
import com.technerdshub.vusocial.Fragments.dummy.DummyContent;
import com.technerdshub.vusocial.R;
import java.util.ArrayList;
import java.util.List;
public class StudentDashboardActivity extends AppCompatActivity {
private Toolbar toolbar;
private TabLayout tabLayout;
private ViewPager viewPager;
/**
* ATTENTION: This was auto-generated to implement the App Indexing API.
* See https://g.co/AppIndexing/AndroidStudio for more information.
*/
private GoogleApiClient client;
@Override
protected void onCreate(Bundle savedInstanceState) {
displayLoginActivity();
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_student_dashboard);
// Parse.initialize(new Parse.Configuration.Builder(this)
// .applicationId("J5CIV2z6xeSCXDqdOfhE0kPSikvRFPyDyOJxqJNx")
// .clientKey("bEWm4nWtWiBrMczGfOvA7s4Ulr2bAU3W3TtVSLDf")
// .build()
// );
toolbar = (Toolbar) findViewById(R.id.tool_bar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setElevation(2);
viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
// ParseObject testObject = new ParseObject("Task");
// testObject.put("marks", 99);
// testObject.saveInBackground();
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client = new GoogleApiClient.Builder(this).addApi(AppIndex.API).build();
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFragment(new TaskFragment(), "Quiz");
adapter.addFragment(new TaskFragment(), "Assignment");
adapter.addFragment(new TaskFragment(), "GDB");
viewPager.setAdapter(adapter);
}
private void displayLoginActivity() {
Intent i = new Intent(this, Login.class);
startActivity(i);
}
@Override
public void onStart() {
super.onStart();
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client.connect();
Action viewAction = Action.newAction(
Action.TYPE_VIEW, // TODO: choose an action type.
"StudentDashboard Page", // TODO: Define a title for the content shown.
// TODO: If you have web page content that matches this app activity's content,
// make sure this auto-generated web page URL is correct.
// Otherwise, set the URL to null.
Uri.parse("http://host/path"),
// TODO: Make sure this auto-generated app URL is correct.
Uri.parse("android-app://com.technerdshub.vusocial.Activities/http/host/path")
);
AppIndex.AppIndexApi.start(client, viewAction);
}
@Override
public void onStop() {
super.onStop();
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
Action viewAction = Action.newAction(
Action.TYPE_VIEW, // TODO: choose an action type.
"StudentDashboard Page", // TODO: Define a title for the content shown.
// TODO: If you have web page content that matches this app activity's content,
// make sure this auto-generated web page URL is correct.
// Otherwise, set the URL to null.
Uri.parse("http://host/path"),
// TODO: Make sure this auto-generated app URL is correct.
Uri.parse("android-app://com.technerdshub.vusocial.Activities/http/host/path")
);
AppIndex.AppIndexApi.end(client, viewAction);
client.disconnect();
}
class ViewPagerAdapter extends FragmentPagerAdapter {
private final List<TaskFragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager manager) {
super(manager);
}
@Override
public TaskFragment getItem(int position) {
return mFragmentList.get(position);
}
@Override
public int getCount() {
return mFragmentList.size();
}
public void addFragment(TaskFragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
@Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
}
风格xml
<resources xmlns:tools="http://schemas.android.com/tools">
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/ColorPrimary</item>
<item name="colorPrimaryDark">@color/ColorPrimaryDark</item>
<item name="colorAccent">@color/colorAccent</item>
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
</style>
<!--<style name="AppTheme.NoActionBar" parent="Theme.AppCompat.NoActionBar">-->
<!--<item name="windowActionBar">false</item>-->
<!--<item name="windowNoTitle">true</item>-->
<!--</style>-->
<style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" >
</style>
<style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
<style name="TEST" parent="AppTheme" >
<item name="colorPrimary">@color/com_facebook_blue</item>
<item name="colorAccent">@color/colorAccent</item>
<item name="android:colorBackground">@color/cardview_light_background</item>
<item name="colorPrimaryDark">@color/com_facebook_button_background_color_selected</item>
</style>
<!--<!– new design fai–>-->
<!--<style name="MyMaterialTheme" parent="MyMaterialTheme.Base">-->
<!--</style>-->
<!--<style name="MyMaterialTheme.Base" parent="Theme.AppCompat.Light.NoActionBar">-->
<!--<item name="windowNoTitle">true</item>-->
<!--<item name="windowActionBar">false</item>-->
<!--<item name="colorPrimary">@color/colorPrimary</item>-->
<!--<item name="colorPrimaryDark">@color/colorPrimaryDark</item>-->
<!--<item name="colorAccent">@color/colorAccent</item>-->
<!--</style>-->
</resources>
请告诉我，我如何解决这个错误？
共有2个答案
齐驰
声明应用程序主题与windows ActionBar为false在style.xml
<item name="windowActionBar">false</item>
如果你使用过任何应用程序支持库的主题，需要包括以下行也
<item name="windowNoTitle">true</item>
苏宾鸿
尝试将style.xml更改为低于给定代码
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
<!-- Customize your theme here. -->
<item name="android:windowActionBar">false</item>
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="colorAccent">@color/colorAccent</item>
</style>
<style name="AppTheme.NoActionBar">
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
</style>
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