问题
I want to write a code that uses the splash screen .I have written this so far, but Can anyone tell me what is the missing here!?
here is my main code:
package com.example.splash;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.util.Log;
import android.view.Menu;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
and here is my splash activity code:
package com.example.splash;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
public class splashscreen extends Activity {
protected int _splashTime = 5000;
private Thread splashTread;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.splashh);
final splashscreen sPlashScreen = this;
splashTread = new Thread() {
@Override
public void run() {
try {
synchronized(this){
wait(_splashTime);
}
} catch(InterruptedException e) {}
finally {
finish();
Intent i = new Intent();
i.setClass(sPlashScreen,MainActivity.class);
startActivity(i);
//stop();
}
}
};
splashTread.start();
}
The problem is I do not know how to tell my main to go splash activity , if I use an intent I would stuck on infinite loop.
回答1:
You can simply use this:
Handler handler=new Handler();
handler.postDelayed(new Runnable()
{
@Override
public void run()
{
Intent intent = new Intent(SplashViewController.this,HomeViewController.class);
startActivity(intent);
SplashViewController.this.finish();
}
}, 3000);
回答2:
try this instead :
public class splashscreen extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_splash);
Thread t = new Thread(Splash_Runnable);
t.start();
}
Runnable Splash_Runnable = new Runnable() {
@Override
public void run() {
try {
Thread.sleep(3000);
startActivity(new Intent(splashscreen.this,
MainActivity.class));
splashscreen.this.finish();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
};
}
回答3:
The problem (i guess) is that your app is starting with your MainActivity as your launcher Activity. Make splashscreen your laucher Activity in your Application Manifest XML and you will avoid the infinite loop.
回答4:
Try this code:
private boolean _active = true;
private int _splashTime = 5000;
Thread splashTread = new Thread()
{
@Override
public void run()
{
try
{
int waited = 0;
while(_active && (waited < _splashTime))
{
sleep(100);
if(_active)
{
waited += 100;
}
}
}
catch(InterruptedException e)
{
e.printStackTrace();
}
finally
{
Intent intent = new Intent(SplashScreenActivity.this,MainActivity.class);
startActivity(intent);
finish();
}
};
splashTread.start();
in AndroidManifest mention your activity as Main Activity.
回答5:
Try to change your SplashActivity code from here.
Splash and main activity error
Also make your splashactivtiy as your launcher activity and then redirect to the MainActivity from the SplashScreen
<activity
android:name="com.app.wablogic.SplashActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
</intent-filter>
</activity>
回答6:
Full detail of creating a splash Activity
Create a layout for Splash
splash.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="@drawable/splash" >
</LinearLayout>
Now create a class Under package . Name it Splash
public class Splash extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
Intent openMainActivity = new Intent(Splash.this, MainActivity.class);
startActivity(openMainActivity);
finish();
}
}, 5000); //it will call the MainActivity after 5 seconds
}
Go to manifest and add the Activity to it.
and cut the intent-filter where main and Launcher are child and paste it in Splash Activity like
<activity
android:name="com.example.yourpackage.Splash"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
回答7:
You can create a Thread for doing something or just sleep for a few seconds to do, such as
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Thread background = new Thread() {
public void run() {
try {
// Thread will sleep for 3 seconds
sleep(3*1000);
// After 3 seconds redirect to another intent
Intent i=new Intent(getBaseContext(),MenuActivity.class);
startActivity(i);
//Remove activity
finish();
} catch (Exception e) {
}
}
};
background.start();
}
@Override
protected void onDestroy() {
super.onDestroy();
}
You can get more example here.
来源：https://stackoverflow.com/questions/18356783/start-splash-screen-activity