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我想檢查用戶是否已經在Facebook上或在沒有啓動屏幕上。 我嘗試這個,但它不工作...Facebook已經登錄android
public class SplashScreen extends Activity {
// Splash screen timer
AccessTokenTracker accessTokenTracker;
private static int SPLASH_TIME_OUT = 3000;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
FacebookSdk.sdkInitialize(getApplicationContext());
accessTokenTracker = new AccessTokenTracker() {
@Override
protected void onCurrentAccessTokenChanged(AccessToken oldAccessToken, AccessToken newAccessToken) {
updateWithToken(newAccessToken);
}
};
setContentView(R.layout.splash_screen);
updateWithToken(AccessToken.getCurrentAccessToken());
}
private void updateWithToken(AccessToken currentAccessToken) {
if (currentAccessToken != null) {
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
Intent i = new Intent(SplashScreen.this, Home_Page.class);
startActivity(i);
finish();
}
}, SPLASH_TIME_OUT);
} else {
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
Intent i = new Intent(SplashScreen.this, MainActivity.class);
startActivity(i);
finish();
}
}, SPLASH_TIME_OUT);
}
}
}
任何人都可以幫助我嗎?