Java Android Studio应用程序崩溃

我在Android Studio上制作的应用程序有问题。我不知道为什么，但是在启动屏幕之后，应用程序崩溃了。我希望活动“Accueil”在启动屏幕后打开。上周它工作得很好，现在不再是了。我什么也没碰。我向您展示清单和

.java

文件

Splashscreen.java：

import android.app.Activity;
import android.content.Intent;
import android.graphics.PixelFormat;
import android.os.Bundle;
import android.view.Window;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.ImageView;
import android.widget.LinearLayout;

public class Splashscreen extends Activity {
    public void onAttachedToWindow() {
        super.onAttachedToWindow();
        Window window = getWindow();
        window.setFormat(PixelFormat.RGBA_8888);
    }

    Thread splashTread;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_splashscreen);
        StartAnimations();
        Thread loading = new Thread() {
            public void run() {
                try {
                    sleep(5000);
                    Intent main = new Intent(Splashscreen.this,Menu.class);
                    startActivity(main);
                    finish();
                } catch (Exception e) {
                    e.printStackTrace();
                } finally {
                    finish();
                }
            }
        };

        loading.start();
    }

    private void StartAnimations() {
        Animation anim = AnimationUtils.loadAnimation(this, R.anim.alpha);
        anim.reset();
        LinearLayout l = (LinearLayout) findViewById(R.id.lin_lay);
        l.clearAnimation();
        l.startAnimation(anim);
        anim = AnimationUtils.loadAnimation(this, R.anim.rotate);
        anim.reset();
        ImageView iv = (ImageView) findViewById(R.id.splash);
        iv.clearAnimation();
        iv.startAnimation(anim);
        splashTread = new Thread() {
            @Override
            public void run() {
                try {
                    int waited = 0;

                    while (waited < 3500) {
                        sleep(100);
                        waited += 100;
                    }

                    Intent intent = new Intent(Splashscreen.this,Menu.class);
                    startActivity(intent);
                    finish();
                } catch (InterruptedException e) {

                }
            }
        };
    }
}

这样做

Intent main = new Intent(Splashscreen.this, Accueil.class);
                    startActivity(main);
                     finish();

而不是

Intent main = new Intent(Splashscreen.this, Menu.class);
                startActivity(main);
                finish();

您甚至没有在清单中提到菜单活动。

这是您的错误：

Intent main = new   Intent(Splashscreen.this,Menu.class); 

应该是：

Intent main = new   Intent(Splashscreen.this, Accueil.class);

---

我认为你的应用程序崩溃可能是因为两个原因

没有名为“菜单”的活动

清单文件中未提及菜单活动

如果你想打开“Accueil”活动，那么用下面的方式写下你的意图

Intent openAccueil = new   Intent(Splashscreen.this,Menu.class);
startActivity(openAccueil);

---

请把你的崩溃日志。也不要把UI线程放在睡眠状态。

Intent main = new   Intent(Splashscreen.this, Accueil.class);

Intent openAccueil = new   Intent(Splashscreen.this,Menu.class);
startActivity(openAccueil);