这是Logcat。请求帮助:(
07-19 09:39:48.815 9001-9001/pens.pensnews E/AndroidRuntime: FATAL EXCEPTION: main
Process: pens.pensnews, PID: 9001
java.lang.RuntimeException: Unable to start activity ComponentInfo{pens.pensnews/pens.pensnews.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:3319)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3415)
at android.app.ActivityThread.access$1100(ActivityThread.java:229)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1821)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:7325)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
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.AppCompatDelegateImplV9.setSupportActionBar(AppCompatDelegateImplV9.java:204)
at android.support.v7.app.AppCompatActivity.setSupportActionBar(AppCompatActivity.java:129)
at pens.pensnews.MainActivity.onCreate(MainActivity.java:25)
at android.app.Activity.performCreate(Activity.java:6904)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1136)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3266)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3415)
at android.app.ActivityThread.access$1100(ActivityThread.java:229)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1821)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:7325)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
我实施了一个启动画面，以便在我的主要活动之前启动。在我使用Splash Screen之前，它确实有效。我不确定我错在哪里或错过了什么。
这是我的代码
Splashscreen.java :
package pens.pensnews;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.os.Handler;import android.view.Window;import android.view.WindowManager;
public class Splashscreen extends Activity {
//Set waktu lama splashscreen
private static int splashInterval = 2000;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_splashscreen);
new Handler().postDelayed(new Runnable(){
@Override
public void run() {
// TODO Auto-generated method stub
Intent i = new Intent(getApplicationContext(), MainActivity.class);
startActivity(i); // menghubungkan activity splashscreen ke main activity dengan intent
//jeda selesai Splashscreen
finish();
}
}, splashInterval);
}}
MainActivity.java
package pens.pensnews;import android.os.Bundle;import android.support.design.widget.FloatingActionButton;import android.support.design.widget.Snackbar;import android.support.v4.app.FragmentManager;import android.support.design.widget.NavigationView;import android.support.v4.view.GravityCompat;import android.support.v4.widget.DrawerLayout;import android.support.v7.app.ActionBarDrawerToggle;import android.support.v7.app.AppCompatActivity;import android.support.v7.widget.Toolbar;import android.view.Menu;import android.view.MenuItem;import android.view.View;
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
FragmentManager manager = getSupportFragmentManager();
Kampus kampus = new Kampus();
manager.beginTransaction().replace(R.id.MainLayout, kampus).commit();
Akademik akademik = new Akademik();
manager.beginTransaction().replace(R.id.MainLayout, akademik).commit();
Nonak nonak = new Nonak();
manager.beginTransaction().replace(R.id.MainLayout, nonak).commit();
Beranda beranda = new Beranda();
manager.beginTransaction().replace(R.id.MainLayout, beranda).commit();
}
@Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.nav_help) {
return true;
}
return super.onOptionsItemSelected(item);}
@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_beranda) {
Beranda beranda = new Beranda();
FragmentManager manager = getSupportFragmentManager();
manager.beginTransaction().replace(R.id.MainLayout, beranda).commit();
} else if (id == R.id.nav_kampus) {
Kampus kampus = new Kampus();
FragmentManager manager = getSupportFragmentManager();
manager.beginTransaction().replace(R.id.MainLayout, kampus).commit();
} else if (id == R.id.nav_akademik) {
Akademik akademik = new Akademik();
FragmentManager manager = getSupportFragmentManager();
manager.beginTransaction().replace(R.id.MainLayout, akademik).commit();
}else if (id == R.id.nav_non) {
Nonak nonak = new Nonak();
FragmentManager manager = getSupportFragmentManager();
manager.beginTransaction().replace(R.id.MainLayout, nonak).commit();
} else if (id == R.id.nav_about) {
About about = new About();
FragmentManager manager = getSupportFragmentManager();
manager.beginTransaction().replace(R.id.MainLayout, about).commit();
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="pens.pensnews">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:theme="@style/AppTheme">
<activity
android:name="pens.pensnews.Splashscreen"
android:label="@string/app_name"
android:theme="@style/Splashscreen"
android:noHistory="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="pens.pensnews.MainActivity"
android:label="@string/app_name" >
</activity>
<activity android:name=".Mawapres" />
<activity android:name=".Akademik1" />
<activity android:name=".Akademik2" />
<activity android:name=".Kampus1" />
<activity android:name=".Kampus2" />
<activity android:name=".Kampus3" />
<activity android:name=".Nonak1" />
<activity android:name=".Nonak2" />
<activity android:name=".Nonak3" />
<activity android:name=".Nonak4"></activity>
</application>
</manifest>
MainActivity.java
package pens.pensnews;import android.os.Bundle;import android.support.design.widget.FloatingActionButton;import android.support.design.widget.Snackbar;import android.support.v4.app.FragmentManager;import android.support.design.widget.NavigationView;import android.support.v4.view.GravityCompat;import android.support.v4.widget.DrawerLayout;import android.support.v7.app.ActionBarDrawerToggle;import android.support.v7.app.AppCompatActivity;import android.support.v7.widget.Toolbar;import android.view.Menu;import android.view.MenuItem;import android.view.View;
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
FragmentManager manager = getSupportFragmentManager();
Kampus kampus = new Kampus();
manager.beginTransaction().replace(R.id.MainLayout, kampus).commit();
Akademik akademik = new Akademik();
manager.beginTransaction().replace(R.id.MainLayout, akademik).commit();
Nonak nonak = new Nonak();
manager.beginTransaction().replace(R.id.MainLayout, nonak).commit();
Beranda beranda = new Beranda();
manager.beginTransaction().replace(R.id.MainLayout, beranda).commit();
}
@Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.nav_help) {
return true;
}
return super.onOptionsItemSelected(item);}
@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_beranda) {
Beranda beranda = new Beranda();
FragmentManager manager = getSupportFragmentManager();
manager.beginTransaction().replace(R.id.MainLayout, beranda).commit();
} else if (id == R.id.nav_kampus) {
Kampus kampus = new Kampus();
FragmentManager manager = getSupportFragmentManager();
manager.beginTransaction().replace(R.id.MainLayout, kampus).commit();
} else if (id == R.id.nav_akademik) {
Akademik akademik = new Akademik();
FragmentManager manager = getSupportFragmentManager();
manager.beginTransaction().replace(R.id.MainLayout, akademik).commit();
}else if (id == R.id.nav_non) {
Nonak nonak = new Nonak();
FragmentManager manager = getSupportFragmentManager();
manager.beginTransaction().replace(R.id.MainLayout, nonak).commit();
} else if (id == R.id.nav_about) {
About about = new About();
FragmentManager manager = getSupportFragmentManager();
manager.beginTransaction().replace(R.id.MainLayout, about).commit();
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="pens.pensnews">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:theme="@style/AppTheme">
<activity
android:name="pens.pensnews.Splashscreen"
android:label="@string/app_name"
android:theme="@style/Splashscreen"
android:noHistory="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="pens.pensnews.MainActivity"
android:label="@string/app_name" >
</activity>
<activity android:name=".Mawapres" />
<activity android:name=".Akademik1" />
<activity android:name=".Akademik2" />
<activity android:name=".Kampus1" />
<activity android:name=".Kampus2" />
<activity android:name=".Kampus3" />
<activity android:name=".Nonak1" />
<activity android:name=".Nonak2" />
<activity android:name=".Nonak3" />
<activity android:name=".Nonak4"></activity>
</application>
</manifest>
答案 0 :(得分：0)
在AndroidManifest.xml中添加此行
机器人：主题= “@风格/ AppTheme.NoActionBar”
添加此行后，您的文件将如下所示..
<activity
android:name="pens.pensnews.Splashscreen"
android:label="@string/app_name"
android:theme="@style/Splashscreen"
android:theme="@style/AppTheme.NoActionBar"
android:noHistory="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
Shiena如果此代码适用于您，请将此问题标记为您的答案。