AccountAuthenticatorActivity for AppCompat

问题

I'm making an authenticator following the tutorial: http://blog.udinic.com/2013/04/24/write-your-own-android-authenticator/

The login Activity requires to extend AccountAuthenticatorActivity, the issue starts here: AccountAuthenticatorActivity extends the regular Activity and not AppCompatActivity.

Using the regular Activity in AppCompat results in a Activity without ActionBar. I want to use AccountAuthenticatorActivity AND having an ActionBar.

回答1:

The key is AppCompatDelegate, my code is based on the AppCompatPreferenceActivity class generated by Android Studio:

@SuppressWarnings("unused")
public class AppCompatAuthActivity extends AccountAuthenticatorActivity {

    private AppCompatDelegate mDelegate;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        getDelegate().installViewFactory();
        getDelegate().onCreate(savedInstanceState);
        super.onCreate(savedInstanceState);
    }

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        getDelegate().onPostCreate(savedInstanceState);
    }

    public ActionBar getSupportActionBar() {
        return getDelegate().getSupportActionBar();
    }

    public void setSupportActionBar(@Nullable Toolbar toolbar) {
        getDelegate().setSupportActionBar(toolbar);
    }

    @Override
    @NonNull
    public MenuInflater getMenuInflater() {
        return getDelegate().getMenuInflater();
    }

    @Override
    public void setContentView(@LayoutRes int layoutResID) {
        getDelegate().setContentView(layoutResID);
    }

    @Override
    public void setContentView(View view) {
        getDelegate().setContentView(view);
    }

    @Override
    public void setContentView(View view, ViewGroup.LayoutParams params) {
        getDelegate().setContentView(view, params);
    }

    @Override
    public void addContentView(View view, ViewGroup.LayoutParams params) {
        getDelegate().addContentView(view, params);
    }

    @Override
    protected void onPostResume() {
        super.onPostResume();
        getDelegate().onPostResume();
    }

    @Override
    protected void onTitleChanged(CharSequence title, int color) {
        super.onTitleChanged(title, color);
        getDelegate().setTitle(title);
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        getDelegate().onConfigurationChanged(newConfig);
    }

    @Override
    protected void onStop() {
        super.onStop();
        getDelegate().onStop();
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        getDelegate().onDestroy();
    }

    public void invalidateOptionsMenu() {
        getDelegate().invalidateOptionsMenu();
    }

    private AppCompatDelegate getDelegate() {
        if (mDelegate == null) {
            mDelegate = AppCompatDelegate.create(this, null);
        }
        return mDelegate;
    }

}

The AppCompatDelegate is the key to add ActionBar to ANY regular Activity (for example PreferenceActivity).

Don't forget your activity must extend AppCompatAuthActivity.

回答2:

I think that is not the real solution. If you are doing an app with support libraries, mixing AppCompatActivities, Fragments &c with the standard ones is not a good idea.

I´ve created an AccountAuthenticatorAppCompatActivity extending AppCompatActivity and then copy/paste the code from API AccountAuthenticatorActivity and it seems to work properly.

public class AccountAuthenticatorAppCompatActivity extends AppCompatActivity {
private AccountAuthenticatorResponse mAccountAuthenticatorResponse = null;
private Bundle mResultBundle = null;

public final void setAccountAuthenticatorResult(Bundle result) {
    mResultBundle = result;
}

protected void onCreate(Bundle icicle) {
    super.onCreate(icicle);

    mAccountAuthenticatorResponse =
            getIntent().getParcelableExtra(AccountManager.KEY_ACCOUNT_AUTHENTICATOR_RESPONSE);

    if (mAccountAuthenticatorResponse != null) {
        mAccountAuthenticatorResponse.onRequestContinued();
    }
}

public void finish() {
    if (mAccountAuthenticatorResponse != null) {
        // send the result bundle back if set, otherwise send an error.
        if (mResultBundle != null) {
            mAccountAuthenticatorResponse.onResult(mResultBundle);
        } else {
            mAccountAuthenticatorResponse.onError(AccountManager.ERROR_CODE_CANCELED,
                    "canceled");
        }
        mAccountAuthenticatorResponse = null;
    }
    super.finish();
}

}

Hope it helps to someone.

来源：https://stackoverflow.com/questions/44764800/accountauthenticatoractivity-for-appcompat