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我正在開發一個應用程序，我在其中使用啓動畫面。但在飛濺消失後，然後
在切換到我的主要活動之前，下一個屏幕變黑，我不想黑屏。任何人都可以請建議我如何做到這一點？ 這是我的代碼。在Android中的啓動畫面後出現的黑色屏幕
發射活動
public class MainActivity extends Activity{
public static final String TAG = "MainActivity";
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
Intent in = new Intent(getApplicationContext(), SplashScreenActivity.class);
synchronized (this) {
try {
wait(50);
} catch (InterruptedException e) {
String str = e.toString();
Log.d(TAG, str);
}//catch
}//synchronized block
startActivity(in);
}//onCreate
}//class
SplashScreenAcitvity
public class SplashScreenActivity extends Activity {
private Thread splashThread;
public static final String TAG = "SplashScreenActivity";
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
final SplashScreenActivity splashScreen = this;
splashThread = new Thread(){
public void run(){
try {
synchronized (this) {
wait(3000);
}
} catch (Exception e) {
String str = e.toString();
Log.d(TAG, str);
}
finish();
Intent in = new Intent();
in.setClass(splashScreen, ProjectActivity.class);
startActivity(in);
stop();
}//run
};
splashThread.start();
}//onCreate
}//class
項目活動 這是從哪兒主營業務將啓動類。
public class ProjectActivity extends TabActivity {
static int x=0;
static int color;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.tabxml);
if(x==1)
{
Dor.c=1;
color = getIntent().getExtras().getInt("color");
//Intent in=new Intent();
//in.putExtra("color",color);
}
Resources res = getResources(); // Resource object to get Drawables
TabHost tabHost = getTabHost(); // The activity TabHost
TabHost.TabSpec spec; // Resusable TabSpec for each tab
Intent intent; // Reusable Intent for each tab
// Create an Intent to launch an Activity for the tab (to be reused)
intent = new Intent().setClass(this, Dor.class);
// Initialize a TabSpec for each tab and add it to the TabHost
spec = tabHost.newTabSpec("dor").setIndicator("Dor",
res.getDrawable(R.drawable.ic_tab_artists))
.setContent(intent);
tabHost.addTab(spec);
// Do the same for the other tabs
intent = new Intent().setClass(this, Album.class);
spec = tabHost.newTabSpec("albums").setIndicator("Albums",
res.getDrawable(R.drawable.ic_tab_album)
.setContent(intent);
tabHost.addTab(spec);
intent = new Intent().setClass(this, Forhandler.class);
spec = tabHost.newTabSpec("forhandler").setIndicator("Forhandler",
res.getDrawable(R.drawable.ic_tab_forhandler))
.setContent(intent);
tabHost.addTab(spec);
intent = new Intent().setClass(this, Diplomat.class);
spec = tabHost.newTabSpec("diplomat").setIndicator("Diplomat",
res.getDrawable(R.drawable.ic_tab_diplomat))
.setContent(intent);
tabHost.addTab(spec);
tabHost.setCurrentTab(0);
}
}
我嘗試了異步任務，但它沒有奏效。這裏是我修改後的代碼：
ProjectStart
public class ProjectStart extends AsyncTask<Context, Void, Void>{
public static final String TAG = "ProjectStart";
/*public ProjectStart() {
super("ProjectStart");
// TODO Auto-generated constructor stub
}*/
Context ctx;
public ProjectStart(Context context){
this.ctx = context;
}//constructor
@Override
protected Void doInBackground(Context... params) {
// TODO Auto-generated method stub
Intent in = new Intent();
in.setClass(ctx, ProjectActivity.class);
Log.d(TAG, "doInBackground called");
return null;
}//doInBackground
/*@Override
protected void onHandleIntent(Intent intent) {
// TODO Auto-generated method stub
Intent in = new Intent();
in.setClass(getApplicationContext(), ProjectActivity.class);
startActivity(in);
Log.d("Project Start", "onHandleIntentCalled");
}*/
} //類
在SplashScreen.java我如下修改
splashThread = new Thread() {
public void run(){
try {
synchronized (this) {
wait(3000);
}//synchronized
}//try
catch(InterruptedException e) {}
finally {
finish();
new ProjectStart(sPlashScreen).execute();
/*Intent in = new Intent(getApplicationContext(), ProjectStart.class);
startService(in);*/
stop();
}//finally
Log.d(TAG, "run method called");
}//run
};
而且，這裏是堆棧跟蹤：
04-19 11:29:02.181: E/AndroidRuntime(341): FATAL EXCEPTION: Thread-8
04-19 11:29:02.181: E/AndroidRuntime(341): java.lang.ExceptionInInitializerError
04-19 11:29:02.181: E/AndroidRuntime(341): at abc.com.camera.SplashScreen$1.run(SplashScreen.java:32)
04-19 11:29:02.181: E/AndroidRuntime(341): Caused by: java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
04-19 11:29:02.181: E/AndroidRuntime(341): at android.os.Handler.<init>(Handler.java:121)
04-19 11:29:02.181: E/AndroidRuntime(341): at android.os.AsyncTask$InternalHandler.<init>(AsyncTask.java:421)
04-19 11:29:02.181: E/AndroidRuntime(341): at android.os.AsyncTask$InternalHandler.<init>(AsyncTask.java:421)
04-19 11:29:02.181: E/AndroidRuntime(341): at android.os.AsyncTask.<clinit>(AsyncTask.java:152)
04-19 11:29:02.181: E/AndroidRuntime(341): ... 1 more
04-19 11:29:02.181: E/AndroidRuntime(341): Caused by: java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
我沒有得到什麼問題。
您的代碼在哪裏？ – 2012-04-18 05:10:08
嗨，你能告訴我你在啓動畫面中做了什麼，主要活動 – 2012-04-18 05:10:28
試圖在MainActivity的onCreate（）中儘可能多地減少代碼。 – Richa 2012-04-18 05:17:05