一次闪屏

Question

我希望我的启动画面仅在首次启动时显示。我知道我必须通过共享偏好，但如何？这是我的想法：

public class Splash extends Activity {

    @Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        setContentView(R.layout.splash);

        //animation
        ImageView imageView = (ImageView) findViewById(R.id.imageView);
        Animation alpha = AnimationUtils.loadAnimation(getApplicationContext(),
                R.anim.fade_in);
        imageView.startAnimation(alpha);
        alpha.setAnimationListener((new AnimationListener() {
            @Override
            public void onAnimationStart(Animation animation) {
                // TODO Auto-generated method stub
            }

            @Override
            public void onAnimationRepeat(Animation animation) {
                // TODO Auto-generated method stub
            }

            @Override
            public void onAnimationEnd(Animation animation) {
                // TODO Start your activity here.
                Intent mainIntent = new Intent(Splash.this, MainActivity.class);
                Splash.this.startActivity(mainIntent);
                Splash.this.finish();
            }
        }));
    }
}

Answer 1

试试这个：

SharedPreferences mPrefs;
final boolean mLoginSession;
 public static final String PREFER_NAME = "MyPrefsFile";

//Inside onCreate
   mPrefs = getSharedPreferences(PREFER_NAME, MODE_PRIVATE);
  mLoginSession = mPrefs.getBoolean(PREFER_NAME, false);



if (mLoginSession) {
    Intent gotoMain = new Intent(Splash.this, MainActivity.class);
     startActivity(gotoMain);
     finish();
     } else {
      //Show Splash Data here and Change the shared value of "PREFER_NAME"

      SharedPreferences.Editor editor = mPrefs.edit();
            editor.putBoolean(PREFER_NAME, true);
            editor.commit();
      }

Answer 2

请尝试这样做。

<button (click)="toggle(1)" class="someclass">
<button (click)="toggle(2)" class="someclass">