我正在尝试使用此java和xml代码实现Splash Screen。我从我的主要活动创建了一个单独的java类,并将java代码放在里面。我在布局文件中创建了一个xml布局,并将xml代码放在里面。但是,我的应用程序通常没有启动画面。它从未显示,但应用程序没有任何错误。 Eclipse也没有显示任何错误。这可能是什么原因?先感谢您。这是代码。
爪哇:
package com.carouseldemo.main;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.view.Menu;
public class Splash extends Activity {
private final int SPLASH_DISPLAY_LENGHT = 1000;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.splash);
/* New Handler to start the Menu-Activity
* and close this Splash-Screen after some seconds.*/
new Handler().postDelayed(new Runnable(){
@Override
public void run() {
/* Create an Intent that will start the Menu-Activity. */
Intent mainIntent = new Intent(Splash.this,Menu.class);
Splash.this.startActivity(mainIntent);
Splash.this.finish();
}
}, SPLASH_DISPLAY_LENGHT);
}
}
XML:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ImageView android:id="@+id/splashscreen" android:layout_width="wrap_content"
android:layout_height="fill_parent" android:src="@drawable/cat"
android:layout_gravity="center"/>
<TextView android:layout_width="fill_parent"
android:layout_height="wrap_content" android:text="Hello World, splash"/>
</LinearLayout>
清单:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.carouseldemo.main"
android:versionCode="1"
android:versionName="1.0"
>
<uses-sdk android:minSdkVersion="8" android:targetSdkVersion="17" android:screenOrientation="portrait"/>
<application android:icon="@drawable/buttonone" android:label="@string/app_name">
<activity android:name=".MainActivity" android:label="@string/app_name" android:screenOrientation="portrait" android:configChanges="orientation|keyboardHidden" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
答案 0 :(得分:1)
用此处替换处理程序部分:
Thread splashThread = new Thread() {
public void run() {
try {
Thread.sleep(SPLASH_DISPLAY_LENGHT);
} catch (Exception e) {
} finally {
Intent i = new Intent(Splash.this,Menu.class);
startActivity(i);
finish();
}
}
};
splashThread.start();
答案 1 :(得分:1)
试试如下:
public class Splash extends Activity { private final int SPLASH_DISPLAY_LENGHT = 1000; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.splash); new Thread(){ public void run() { try { sleep(SPLASH_DISPLAY_LENGHT); Intent mainIntent = new Intent(Splash.this,Menu.class); Splash.this.startActivity(mainIntent); Splash.this.finish(); } catch (InterruptedException e) { e.printStackTrace(); } }; }.start(); }
<强>编辑:强>
<activity android:name=".Splash" android:label="@string/app_name" android:screenOrientation="portrait" android:configChanges="orientation|keyboardHidden" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity>
答案 2 :(得分:1)
private static final int STOPSPLASH = 0;
private static final long SPLASHTIME =3000;
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.splash);
context = getApplicationContext();
if(savedInstanceState == null){
Message msg = new Message();
msg.what = STOPSPLASH;
spHandler.sendMessageDelayed(msg, SPLASHTIME);
}
}
private Handler spHandler = new Handler() {
@Override
public void handleMessage(Message msg)
{
switch (msg.what)
{
case STOPSPLASH:
gotoHomeScreen();
break;
default:
break;
}
super.handleMessage(msg);
}
};
public void gotoHomeScreen(){
Intent i = new Intent();
i.setClass(Splash.this,Home.class);
startActivity(i);
finish();
spHandler = null;
}
试试这个。
你的清单中的
<activity android:name="Splash" android:configChanges="keyboardHidden" android:theme="@android:style/Theme.NoTitleBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
答案 3 :(得分:1)
MainActivity是清单文件中的启动器活动。因此,没有显示启动。
将启动器活动MainActivity更改为Splash,并为MainActivity编写另一个。
<application android:icon="@drawable/buttonone" android:label="@string/app_name">
<activity android:name=".Splash" android:label="@string/app_name" android:screenOrientation="portrait" android:configChanges="orientation|keyboardHidden" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".MainActivity" />
</application>
答案 4 :(得分:0)
实现使用CountDownTimer
public class MyCounter extends CountDownTimer {
public MyCounter(long millisInFuture, long countDownInterval) {
super(millisInFuture, countDownInterval);
}
@Override
public void onFinish() {
startActivity(new Intent(SplashScreen.this,
TabSample.class));
finish();
MCObject.cancel();
}
@Override
public void onTick(long millisUntilFinished) {
}
}
OnCreate
MyCounter MCObject;
MCObject = new MyCounter(3000, 100);
MCObject.start();
答案 5 :(得分:0)
替换你的处理程序
new Thread(new Runnable() {
public void run() {
try {
Thread.sleep(SPLASH_TIME);
startActivity(intent);
finish();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}).start();
答案 6 :(得分:0)
使用此代码,它可能会对您有所帮助。
public class SplashScreenActivity extends Activity {
protected int _splashTime = 2000;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash_screen);
Thread splashTread = new Thread() {
@Override
public void run() {
try {
sleep(_splashTime);
}
} catch (InterruptedException e) {
// do nothing
} finally {
startActivity(new Intent(SplashScreenActivity.this,
MainActivity.class));
SplashScreenActivity.this.finish();
}
}
};
splashTread.start();
}
希望它会对你有所帮助。