更新：感谢大家试图帮助我解决这个bug.我仍然不确定事情,我能够回滚到以前的承诺,并从那里继续发展.这个以前的提交确实显示了同样的错误,但是在我注释掉了button.performClick()之后,它已经消失了.奇怪的是,这并不适用于最近的提交.
我仍然不明白这个错误,并希望能帮助确定根本原因.我最大的恐惧是不经意地重新介绍它.
我曾经见过最疯狂的错误.
OnCreate方法被一再调用,冻结了我的应用程序,并给了我轻微的闪烁.然后,唯一的解决方案是退出到主屏幕,强制从设置菜单退出应用程序.
这是正在发生的细节：
>申请开始(主要活动)
>主要活动调用第二个活动
> Second Activity调用onCreate,设置正常
>第二个活动随机决定退出创建 – 我认为这是发生了什么
> Second Activity的onCreate再次被调用.它不会回到主要活动.
我运行了一个调试器,看来第二个活动成功完成了onComplete / onResume序列,然后决定退出并重启.
有没有人听说过这个行为？
我没有注意到抛出任何异常.此外,在调试过程中,我确实已经进行了检查,您所看到的那些位置是无声的. (这是较早的代码,然后我用print语句)
更新：当尝试停止该过程时,我必须打开飞行模式.这意味着它与这个代码块有关(Second Activity)
else if (Network.haveNetworkConnection(Login.getContext()) && Login.checkClientId())
{...}
没有互联网,它将打到else语句,不显示此行为.
码：
主要活动的onResume(),我称之为第二个活动：
@Override
public void onResume()
{
super.onResume();
//Check If logged in,else go to login page
Login.setContext(getApplicationContext());
//Reset Notification Number
GCMIntentService.cancelNotifications();
/** GO TO LOGIN **/
if(!Login.isLoggedIn())
{
//If user is not logged in,open login page
System.out.println("RESUMING MAIN AND STARTING LOGIN INTENT");
Intent intent = new Intent(ActivityMain.this,ActivityLogin.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK|Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
} else
{
Login.setupStuffOnce();
Event.pullEvents(); //Get New Events
//Update ListView
updateMainFeed();
}
}
这是第二个活动：
public class ActivityLogin extends Activity
{
private String postData;
//private Context c;
//final Timer timer = new Timer();
//Facebook Stuff
private Facebook facebook = new Facebook(Config.FBAPPID);
private AsyncFacebookRunner mAsyncRunner = new AsyncFacebookRunner(facebook);
//Layout Stuff
EditText username,password;
Button loginButton,signupButton;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
// Open Database
Login.setContext(getApplicationContext());
Database.open(getApplicationContext());
}
/*
* @Override public void onPause() { s }
*/
@Override
public void onResume()
{
super.onResume();
// shouldn't put here but oh well
init();
//If coming from ActivitySignup
if(Transfer.username != null)
{
username.setText(Transfer.username);
password.setText(Transfer.password);
Transfer.password = null;
Transfer.username = null;
loginButton.performClick();
}
}
public void init()
{
Login.getUserLoggedIn();
if (Login.isLoggedIn())
{
//Do Any Additional Setup
Login.setupStuffOnce();
// If user is logged in,open main
Intent intent = new Intent(ActivityLogin.this,ActivityMain.class);
//intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
} else if (Network.haveNetworkConnection(Login.getContext()) && Login.checkClientId())
{
// Else,Make User Login
// Inflate Login and Present Website
String clientid = Login.getClientId();
System.out.println("clientid:" + clientid);
//System.exit(0);
postData = "mobile=1&client_id="+Login.getClientId();
// Inflate the view
setContentView(R.layout.activitylogin3);
username = (EditText) findViewById(R.id.username);
password = (EditText) findViewById(R.id.password);
//Inflate the Button
loginButton = (Button) findViewById(R.id.loginButton);
signupButton = (Button) findViewById(R.id.signupButton);
signupButton.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
Intent intent = new Intent(ActivityLogin.this,ActivitySignup.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP|Intent.FLAG_ACTIVITY_SINGLE_TOP);
startActivity(intent);
}
});
loginButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
int res = Login.sendLogin(username.getText().toString(),password.getText().toString());
if(res == 202)
{
//Login Successful
//Check if facebooked.
if(Login.isFacebooked())
{
//Just go to main
Intent intent = new Intent(ActivityLogin.this,ActivityMain.class);
//Are these flags necessary?
//intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
} else
{
//Go to facebook login page
//Intent intent = new Intent(ActivityLogin.this,ActivityFBLogin.class);
//startActivity(intent);
//Login via Facebook
doFacebook();
}
} else
{
System.out.println("Login Failed: "+res);
if(res == 405)
{
Toast.makeText(getApplicationContext(),"Incorrect Username/Password",Toast.LENGTH_SHORT).show();
password.setText("");
}
else
Toast.makeText(getApplicationContext(),"Network Error",Toast.LENGTH_SHORT).show(); //Not entirely true in all cases i think
}
/*Login.getUserLoggedIn();
if(Login.isLoggedIn())
{
Intent intent = new Intent(ActivityLogin.this,ActivityMain.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
} else {
Toast.makeText(getApplicationContext(),"Please Login Above",Toast.LENGTH_SHORT).show();
}*/
}
});
} else
{
// Not Logged In and No Internet Access
setContentView(R.layout.activitylogintext);
EditText text = (EditText) findViewById(R.id.text);
text.setText("No Internet Connection Detected\n requires internet to login");
Button button = (Button) findViewById(R.id.refreshButton);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
//Login.getUserLoggedIn();
if(Network.haveNetworkConnection(Login.getContext()))
{
Intent intent = new Intent(ActivityLogin.this,ActivityLogin.class);
//intent.setFlags();
startActivity(intent);
} else {
Toast.makeText(getApplicationContext(),"No Internet Access Detected",Toast.LENGTH_SHORT).show();
}
}
});
}
}
@Override
public void onActivityResult(int requestCode,int resultCode,Intent data) {
super.onActivityResult(requestCode,resultCode,data);
facebook.authorizeCallback(requestCode,data);
}
public void doFacebook()
{
facebook.authorize(this,Config.facebookPermissions,new DialogListener() {
@Override
public void onComplete(Bundle values) {
/*SharedPreferences.Editor editor = state.edit();
editor.putString("access_token",facebook.getAccessToken());
editor.putLong("access_expires",facebook.getAccessExpires());
editor.commit();
*/
//Input into database
Login.saveAccessToken(facebook.getAccessToken());
Login.setFB(facebook.getAccessToken());
//Login.sendAccessToken(facebook.getAccessToken());
//Intent into Main Activity
Intent intent = new Intent(ActivityLogin.this,ActivityMain.class);
//intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
}
@Override
public void onFacebookError(FacebookError error) {
Toast.makeText(getApplicationContext(),"Error: "+error.getErrorType(),Toast.LENGTH_SHORT).show();
}
@Override
public void onError(DialogError e) {
Toast.makeText(getApplicationContext(),"Error: "+e.getMessage(),Toast.LENGTH_SHORT).show();
}
@Override
public void onCancel() {}
});
}
public boolean checkForUserID(Context c)
{
try{
String res = Network.getUrl("www.website.com/mobile.php?got_user=1&client_id="+Login.getClientId());
JSONObject json = JSON.constructObject(res);
if(JSON.handleCode(json))
{
if(json.getString("type").equals("userid"))
{
Login.setLogin(json.getString("data"));
return true;
}
}
} catch(Exception e)
{
//Silent Fail
}
return false;
}
}
解决方法
我相信如果您在调用SecondActivity之后完成了MainActivity,该问题将得到解决.问题可能是在恢复MainActivity时onResume事件被立即触发.那是因为MainActivity可能在后台被破坏并重新创建.另一个解决方案是使用onSaveInstanceState保存Activity的状态.有关更多信息,请参阅
here.
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