import com.amazon.identity.auth.device.authorization.api.AmazonAuthorizationManager; //导入依赖的package包/类
/**
 * Check if we have a pre-existing access token, and whether that token is expired. If it is not, return that token, otherwise get a refresh token and then
 * use that to get a new token.
 * @param authorizationManager our AuthManager
 * @param context local/application context
 * @param callback the TokenCallback where we return our tokens when successful
 */
public static void getAccessToken(@NotNull AmazonAuthorizationManager authorizationManager, @NotNull Context context, @NotNull TokenCallback callback) {
    SharedPreferences preferences = Util.getPreferences(context.getApplicationContext());
    //if we have an access token
    if(preferences.contains(PREF_ACCESS_TOKEN)){

        if(preferences.getLong(PREF_TOKEN_EXPIRES, 0) > System.currentTimeMillis()){
            //if it's not expired, return the existing token
            callback.onSuccess(preferences.getString(PREF_ACCESS_TOKEN, null));
            return;
        }else{
            //if it is expired but we have a refresh token, get a new token
            if(preferences.contains(PREF_REFRESH_TOKEN)){
                getRefreshToken(authorizationManager, context, callback, preferences.getString(PREF_REFRESH_TOKEN, ""));
                return;
            }
        }
    }

    //uh oh, the user isn't logged in, we have an IllegalStateException going on!
    callback.onFailure(new IllegalStateException("User is not logged in and no refresh token found."));
}
 

import com.amazon.identity.auth.device.authorization.api.AmazonAuthorizationManager; //导入依赖的package包/类
/**
 * Create a new Auth Manager based on the supplied product id
 *
 * This will throw an error if our assets/api_key.txt file, our package name, and our signing key don't match the product ID, this is
 * a common sticking point for the application not working
 * @param context
 * @param productId
 */
public AuthorizationManager(@NotNull Context context, @NotNull String productId){
    mContext = context;
    mProductId = productId;

    try {
        mAuthManager = new AmazonAuthorizationManager(mContext, Bundle.EMPTY);
    }catch(IllegalArgumentException e){
        //This error will be thrown if the main project doesn't have the assets/api_key.txt file in it--this contains the security credentials from Amazon
        Util.showAuthToast(mContext, "APIKey is incorrect or does not exist.");
        Log.e(TAG, "Unable to Use Amazon Authorization Manager. APIKey is incorrect or does not exist. Does assets/api_key.txt exist in the main application?", e);
    }
}
 

import com.amazon.identity.auth.device.authorization.api.AmazonAuthorizationManager; //导入依赖的package包/类
private void logoutAndUnlink() {

		// logout/unlink and wipe local dataset
		// new CognitoUnlinkTask().execute();

		Session session = Session
				.openActiveSessionFromCache(SnakeGameActivity.this);
		if (session != null) {
			session.closeAndClearTokenInformation();
		}

		// if (googleApiClient != null) {
		// googleApiClient.clearDefaultAccount();
		// }

		AmazonAuthorizationManager mAuthManager = new AmazonAuthorizationManager(
				this, Bundle.EMPTY);
		if (mAuthManager != null) {
			mAuthManager.clearAuthorizationState(null);
		}

		AWSClientManager.getCognitoSync().wipeData();

		Toast.makeText(gameView.getContext(), "Logout Successful",
				Toast.LENGTH_SHORT).show();

	}
 

import com.amazon.identity.auth.device.authorization.api.AmazonAuthorizationManager; //导入依赖的package包/类
private void initData() {
    hasSentEvents = false;
    hasGotProfile = false;
    hasGotToken = false;
    /*
     * Initializes CognitoSyncClientManager and DynamoDBManager,
     * initialization must be called before you can use them.
     */
    CognitoSyncClientManager.init(this);
    DynamoDBManager.init();
    mNumberOfGuesses = getIntent().getIntExtra(
            GuessActivity.TIMES_OF_GUESSES, 0);
    mSecondsUsed = getIntent().getIntExtra(GuessActivity.TIME_TO_COMPLETE,
            0);
    mBestScore = getIntent().getIntExtra(GuessActivity.BEST_SCORE, 0);
    mCurrentScore = calculateScore(mNumberOfGuesses, mSecondsUsed);
    Log.i(TAG, "Best score = " + mBestScore + ", Current score = "
            + mCurrentScore);
    if (mCurrentScore > mBestScore) {
        mBestScore = mCurrentScore;
        new InsertRecordTask().execute();
    }
    /*
     * Initializes MobileAnalyticsClientManager, it must be called before
     * you can use it.
     */
    MobileAnalyticsClientManager.init(ResultActivity.this);

    try {
        mAuthManager = new AmazonAuthorizationManager(this, Bundle.EMPTY);
    } catch (IllegalArgumentException e) {
        Toast.makeText(this, "Login with Amazon is disabled.",
                Toast.LENGTH_LONG).show();
        Log.w(TAG, "Login with Amazon isn't configured correctly. "
                + "Thus it's disabled in this demo.", e);
    }
}
 

import com.amazon.identity.auth.device.authorization.api.AmazonAuthorizationManager; //导入依赖的package包/类
public AmazonAuthorizationManager getAmazonAuthorizationManager(){
    return mAuthManager;
}
 

import com.amazon.identity.auth.device.authorization.api.AmazonAuthorizationManager; //导入依赖的package包/类
private void logoutAndUnlink() {
	
	//logout/unlink and wipe local dataset
	//new CognitoUnlinkTask().execute();	

	Session session = Session.openActiveSessionFromCache(SnakeGameActivity.this);
       if (session != null) {
           session.closeAndClearTokenInformation();
       }
       
       AmazonAuthorizationManager mAuthManager = new AmazonAuthorizationManager(this, Bundle.EMPTY);
       if (mAuthManager != null) {
           mAuthManager.clearAuthorizationState(null);
       }
       
       AWSClientManager.getCognitoSync().wipeData();


	Toast.makeText(gameView.getContext(), "Logout Successful",
			Toast.LENGTH_SHORT).show();
	
	
}