Android fix app crash when kill by system in background; Android项目长时间在后台运行后，再次打开程序崩溃问题完美解决（APP在后台被系统回收后，如何重新启动）

AppStatus.java

public class AppStatus {
    public static final int STATUS_RECYCLE =-1; //被回收
    public static final int STATUS_NORMAL=1;    //正常
}

AppStatusManager.java

public class AppStatusManager {
    public int appStatus = AppStatus.STATUS_RECYCLE;//APP状态 初始值被系统回收
 
    public static AppStatusManager appStatusManager;
 
    private AppStatusManager(){}
 
    //单例模式
    public static AppStatusManager getInstance() {
        if (appStatusManager == null) {
            appStatusManager = new AppStatusManager();
        }
        return appStatusManager;
    }
    //得到状态
    public int getAppStatus() {
        return appStatus;
    }
    //设置状态
    public void setAppStatus(int appStatus) {
        this.appStatus = appStatus;
    }
    
}

BaseActivity.java

public class BaseActivity extends AppCompatActivity {
	@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
 
        //判断app状态
        if (AppStatusManager.getInstance().getAppStatus() == AppStatus.STATUS_RECYCLE){
            //被回收，跳转到启动页面
            Intent intent = new Intent(this, StartActivity.class);
            startActivity(intent);
            finish();
            return;
        }
    }
}

StartActivity.java

public class StartActivity extends AppCompatActivity {
 
   	private ImageView sp;
   	
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.startup);
        
        sp=(ImageView) findViewById(R.id.imageView);
      
        
        sp.postDelayed(new Runnable() {
            @Override
            public void run() {
                //页面跳转  
                Intent intent = new Intent(StartActivity.this, MainActivity.class);
            	//app状态改为正常
            	AppStatusManager.getInstance().setAppStatus(AppStatus.STATUS_NORMAL);
            	startActivity(intent);
            	finish();
            }
        }, 2500);
    }
}

TestActivity.java

public class TestActivity extends BaseActivity {
	@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_test);
    }
}

StartActivity第17行，这里应该不是SplashActivity.this，而是StartActivity.this

@HWilliamgo 谢谢, 已更新

@soolaugust 请问逻辑是：AppStatusManager类被回收了，appStatus默认为STATUS_RECYCLE状态是吧？