问题
I'm trying to figure out how is it possible to hide the action bar for a splash screen activity. I did something which hide my action bar on my splash screen, but there is one problem: before my splash screen appears, there is like an activity with an action bar who appears briefly... and I don't know how to hide it!
My splash screen only appears when we touch the application for the first time like an introduction of the application.
Code :
package com.example.basicmaponline;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Window;
public class Intro extends Activity{
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
getWindow().requestFeature(Window.FEATURE_ACTION_BAR);
getActionBar().hide();
setContentView(R.layout.intro);
Thread timer = new Thread(){
public void run(){
try{
sleep(3000);
}catch (InterruptedException e) {
e.printStackTrace();
}finally{
Intent openMenu = new Intent("com.example.basicmaponline.MENU");
startActivity(openMenu);
}
}
};
timer.start();
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
finish();
}
}
Manifest :
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.basicmaponline"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="11"
android:targetSdkVersion="17" />
<uses-permission android:name="android.permission.CALL_PHONE"></uses-permission>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<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.ACCESS_GPS"></uses-permission>
<application
android:allowBackup="true"
android:icon="@drawable/lojacidadao"
android:label="@string/app_name"
android:theme="@style/AppTheme">
<activity
android:name="com.example.basicmaponline.Intro"
android:screenOrientation="portrait"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.example.basicmaponline.Menu"
android:screenOrientation="portrait"
android:label="@string/app_name">
<intent-filter>
<action android:name="com.example.basicmaponline.MENU" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name="com.example.basicmaponline.Mapa"
android:screenOrientation="portrait"
android:label="@string/map_name">
<intent-filter>
<action android:name="com.example.basicmaponline.MAPA" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name="com.example.basicmaponline.Lojas"
android:screenOrientation="portrait"
android:label="@string/lojas_name">
<intent-filter>
<action android:name="com.example.basicmaponline.LOJAS" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name="com.example.basicmaponline.InfoLoja"
android:screenOrientation="portrait"
android:label="@string/loja_name">
<intent-filter>
<action android:name="com.example.basicmaponline.INFOLOJA" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name="com.example.basicmaponline.Balcoes"
android:screenOrientation="portrait"
android:label="@string/balcoes_name" >
<intent-filter>
<action android:name="com.example.basicmaponline.BALCOES" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name="com.example.basicmaponline.Entidade"
android:screenOrientation="portrait"
android:label="@string/balcao_name">
<intent-filter>
<action android:name="com.example.basicmaponline.ENTIDADE" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name="com.example.basicmaponline.Servicos"
android:screenOrientation="portrait"
android:label="@string/servicos_name">
<intent-filter>
<action android:name="com.example.basicmaponline.SERVICOS" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name="com.example.basicmaponline.InfoServico"
android:screenOrientation="portrait"
android:label="@string/servico_name">
<intent-filter>
<action android:name="com.example.basicmaponline.INFOSERVICO" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name="com.example.basicmaponline.Pesquisar"
android:screenOrientation="portrait"
android:label="@string/pesquisa_name" >
<intent-filter>
<action android:name="com.example.basicmaponline.PESQUISAR" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
</manifest>
回答1:
why not add to the manifest the theme of the first activity to exclude the action bar, and maybe even the notification bar?
something like:
<application
android:allowBackup="true"
android:icon="@drawable/lojacidadao"
android:label="@string/app_name"
android:theme="@style/AppTheme">
<activity
android:name="com.example.basicmaponline.Intro"
android:screenOrientation="portrait"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar.Fullscreen">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
...
This should work if you extend the normal Activity class.
If your Activity extends AppCompatActivity instead, use this theme for example:
<style name="AppTheme.Splash" parent="@style/Theme.AppCompat.NoActionBar">
<item name="android:windowFullscreen">true</item>
<item name="android:windowContentOverlay">@null</item>
</style>
meaning :
<activity ...
android:theme="@style/AppTheme.Splash" >
...
BTW, the reason you have the action bar is because you have set the default theme to have it, in the application tag, so it's not an activity before yours, it's really your own splash activity.
回答2:
if your build target sdk 5.0 or over (AppTheme style is Theme.AppCompat.Light.DarkActionBar.)
<activity
android:name=".Splash"
android:label="@string/app_name"
android:theme="@style/Theme.AppCompat.Light.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
回答3:
You're problem are these lines
getWindow().requestFeature(Window.FEATURE_ACTION_BAR);
getActionBar().hide();
They are not needed as there should be no ActionBar to call at all, the splash screen does not use one and should be a completely separate Activity than your others.
You need two Activities. One for the Splash Screen with it's own layout. The 2nd is for the main Activity, which can be a login screen or welcome screen etc.
The splash screen class should look like this
public class SplashScreen extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.yourlayoutfile);
Thread loading = new Thread() {
public void run() {
try {
sleep(5000);
Intent main = new Intent(SplashScreen.this, Main.class);
startActivity(main);
}
catch (Exception e) {
e.printStackTrace();
}
finally {
finish();
}
}
};
loading.start();
}
}
XML File
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical"
tools:context=".SplashScreen" >
// if not using an image replace with whatever is to be shown on the splash screen
<ImageView
android:id="@+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/logo" />
</LinearLayout>
Now the 2nd Activity has the layout with the ActionBar etc.
回答4:
//add to AndroidManifest for SplashScreen
<activity
android:name="<YOUR_PACKAGENAME.ACTIVITY>"
android:theme="@style/AppTheme.NoActionBar"
.........../>
//add this styles to styles.xml
<style name="AppTheme.NoActionBar">
<item name="android:background">@android:color/transparent</item>
<item name="android:windowDisablePreview">true</item>
<item name="android:windowIsTranslucent">true</item>
<item name="android:windowBackground">@null</item>
<item name="android:windowFullscreen">true</item>
<item name="android:windowContentOverlay">@null</item>
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
</style>
//add this code to Activity
public class SplashScreen extends AppCompatActivity {
.
.
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
.
.
.
}
}
回答5:
Small And Sweet, eazy
Do on In OnCreate
View decorView = getWindow().getDecorView();
int uiOptions = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_FULLSCREEN;
decorView.setSystemUiVisibility(uiOptions);
来源：https://stackoverflow.com/questions/16823049/splash-screen-application-and-hide-action-bar