我正在尝试创建一个登录页面，并使用android的服务类在后台运行。但我看不到我在代码末尾创建的菜单。当我在模拟器中运行它时，应用程序完全正常。但是在调试模式下，它会出现 anr error ，这意味着应用程序没有响应。我认为我的应用程序崩溃是因为在完成oncreate方法之前服务响应时间非常长。我该如何解决这个问题？这是我的代码。
private ServiceConnection mConnection = new ServiceConnection() {
public void onServiceConnected(ComponentName className, IBinder service) {
imService = ((IMService.IMBinder)service).getService();
if (imService.isUserAuthenticated() == true)
{
Intent i = new Intent(Login.this, FriendList.class);
startActivity(i);
Login.this.finish();
}
}
public void onServiceDisconnected(ComponentName className) {
imService = null;
Toast.makeText(Login.this, R.string.local_service_stopped,
Toast.LENGTH_SHORT).show();
}
};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
startService(new Intent(Login.this, IMService.class));
setContentView(R.layout.login_screen);
setTitle("Login");
Button loginButton = (Button) findViewById(R.id.login);
cancelButton = (Button) findViewById(R.id.cancel_login);
usernameText = (EditText) findViewById(R.id.userName);
passwordText = (EditText) findViewById(R.id.password);
loginButton.setOnClickListener(new OnClickListener(){
public void onClick(View arg0)
{
if (imService == null) {
Toast.makeText(getApplicationContext(),R.string.not_connected_to_service, Toast.LENGTH_LONG).show();
//showDialog(NOT_CONNECTED_TO_SERVICE);
return;
}
else if (imService.isNetworkConnected() == false)
{
Toast.makeText(getApplicationContext(),R.string.not_connected_to_network, Toast.LENGTH_LONG).show();
//showDialog(NOT_CONNECTED_TO_NETWORK);
}
else if (usernameText.length() > 0 &&
passwordText.length() > 0)
{
Thread loginThread = new Thread(){
private Handler handler = new Handler();
@Override
public void run() {
String result = null;
try {
result = imService.authenticateUser(usernameText.getText().toString(), passwordText.getText().toString());
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
if (result == null || result.equals(AUTHENTICATION_FAILED))
{
handler.post(new Runnable(){
public void run() {
Toast.makeText(getApplicationContext(),R.string.make_sure_username_and_password_correct, Toast.LENGTH_LONG).show();
}
});
}
else {
handler.post(new Runnable(){
public void run() {
Intent i = new Intent(Login.this, FriendList.class);
//i.putExtra(FRIEND_LIST, result);
startActivity(i);
Login.this.finish();
}
});
}
}
};
loginThread.start();
}
}
});
cancelButton.setOnClickListener(new OnClickListener(){
public void onClick(View arg0)
{
imService.exit();
finish();
}
});
}
@Override
protected Dialog onCreateDialog(int id)
{
int message = -1;
switch (id)
{
case NOT_CONNECTED_TO_SERVICE:
message = R.string.not_connected_to_service;
break;
case FILL_BOTH_USERNAME_AND_PASSWORD:
message = R.string.fill_both_username_and_password;
break;
case MAKE_SURE_USERNAME_AND_PASSWORD_CORRECT:
message = R.string.make_sure_username_and_password_correct;
break;
case NOT_CONNECTED_TO_NETWORK:
message = R.string.not_connected_to_network;
break;
default:
break;
}
if (message == -1)
{
return null;
}
else
{
return new AlertDialog.Builder(Login.this)
.setMessage(message)
.setPositiveButton(R.string.OK, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
}
})
.create();
}
}
@Override
protected void onPause()
{
unbindService(mConnection);
super.onPause();
}
@Override
protected void onResume()
{
bindService(new Intent(Login.this, IMService.class), mConnection , Context.BIND_AUTO_CREATE);
super.onResume();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
boolean result = super.onCreateOptionsMenu(menu);
menu.add(0, SIGN_UP_ID, 0, R.string.sign_up);
menu.add(0, EXIT_APP_ID, 0, R.string.exit_application);
return result;
}
@Override
public boolean onMenuItemSelected(int featureId, MenuItem item) {
switch(item.getItemId())
{
case SIGN_UP_ID:
Intent i = new Intent(Login.this, SignUp.class);
startActivity(i);
return true;
case EXIT_APP_ID:
cancelButton.performClick();
return true;
}
return super.onMenuItemSelected(featureId, item);
}
}
10-11 16:06:39.196: E/ActivityManager(58): ANR in at.vcity.androidim
10-11 16:06:39.196: E/ActivityManager(58): Reason: Executing service at.vcity.androidim/.services.IMService
10-11 16:06:39.196: E/ActivityManager(58): Load: 0.27 / 0.16 / 0.11
10-11 16:06:39.196: E/ActivityManager(58): CPU usage from 39193ms to 16ms ago:
10-11 16:06:39.196: E/ActivityManager(58): adbd: 2% = 0% user + 2% kernel
10-11 16:06:39.196: E/ActivityManager(58): vcity.androidim: 1% = 1% user + 0% kernel / faults: 3237 minor 1 major
10-11 16:06:39.196: E/ActivityManager(58): system_server: 0% = 0% user + 0% kernel / faults: 66 minor
10-11 16:06:39.196: E/ActivityManager(58): logcat: 0% = 0% user + 0% kernel
10-11 16:06:39.196: E/ActivityManager(58): m.android.phone: 0% = 0% user + 0% kernel / faults: 40 minor
10-11 16:06:39.196: E/ActivityManager(58): m.android.email: 0% = 0% user + 0% kernel / faults: 33 minor
10-11 16:06:39.196: E/ActivityManager(58): ndroid.settings: 0% = 0% user + 0% kernel / faults: 51 minor
10-11 16:06:39.196: E/ActivityManager(58): zygote: 0% = 0% user + 0% kernel / faults: 24 minor
10-11 16:06:39.196: E/ActivityManager(58): d.process.acore: 0% = 0% user + 0% kernel / faults: 31 minor
10-11 16:06:39.196: E/ActivityManager(58): .quicksearchbox: 0% = 0% user + 0% kernel / faults: 29 minor
10-11 16:06:39.196: E/ActivityManager(58): com.android.mms: 0% = 0% user + 0% kernel / faults: 26 minor
10-11 16:06:39.196: E/ActivityManager(58): TOTAL: 4% = 1% user + 2% kernel + 0% irq + 0% softirq
答案 0 :(得分：0)
尝试：
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu, menu);
menu.add(0, SIGN_UP_ID, 0, R.string.sign_up);
menu.add(0, EXIT_APP_ID, 0, R.string.exit_application);
return true;
}