Android 为什么可以';我不能查看启动屏幕吗?
我有下面的代码,它创建了一个启动屏幕。启动应用程序时,我不会查看启动屏幕,而是直接看到第一个活动:Android 为什么可以';我不能查看启动屏幕吗?,android,android-layout,android-intent,Android,Android Layout,Android Intent,我有下面的代码,它创建了一个启动屏幕。启动应用程序时,我不会查看启动屏幕,而是直接看到第一个活动: public class splash extends Activity { private static final int STOPSPLASH = 0; //time in milliseconds private static final long SPLASHTIME = 13000; private ImageView splash; //handler for splash scre
public class splash extends Activity {
private static final int STOPSPLASH = 0;
//time in milliseconds
private static final long SPLASHTIME = 13000;
private ImageView splash;
//handler for splash screen
private Handler splashHandler = new Handler() {
/* (non-Javadoc)
* @see android.os.Handler#handleMessage(android.os.Message)
*/
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case STOPSPLASH:
//remove SplashScreen from view
splash.setVisibility(View.GONE);
break;
}
super.handleMessage(msg);
}
};
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
Intent intent = new Intent(this, prima.class);
splash = (ImageView) findViewById(R.id.imageView1);
Message msg = new Message();
msg.what = STOPSPLASH;
splashHandler.sendMessageDelayed(msg, SPLASHTIME);
startActivity(intent);
}
}
您必须从处理程序执行
startActivity()
。如果您直接这样做,您将直接切换到下一个活动
public class splash extends Activity {
private static final int STOPSPLASH = 0;
// time in milliseconds
private static final long SPLASHTIME = 13000;
private Intent nextActivity;
// handler for splash screen
private Handler splashHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case STOPSPLASH:
// start next Activity
startActivity(nextActivity);
break;
}
}
};
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
nextActivity = new Intent(this, prima.class);
splashHandler.sendEmptyMessageDelayed(STOPSPLASH, SPLASHTIME);
}
}