我正在努力弄清楚如何在我的应用中实施Google Play游戏服务。在Google Play开发者控制台上，我使用SHA1键将游戏与相关应用相关联，我知道如何在此处添加排行榜和成就。我还将Google Play服务和Google Repository安装到Android Studio，并将依赖项添加到build.gradle（如此处所述：http://developer.android.com/google/play-services/setup.html）但我不确定如何执行最后2该页面上的步骤（创建Proguard例外并确保设备具有Google Play服务APK）以及是否有必要 - 后者即使是Google Play游戏示例项目似乎也没有。
此外，我不确定实际需要在我的项目中添加哪些代码来启用排行榜和成就，因为根据本指南：https://developers.google.com/games/services/android/achievements，我使用此代码：
Games.Achievements.unlock(mGoogleApiClient, "my_achievement_id");
解锁成就，但没有关于我如何设置mGoogleApiClient的说明。 我看过示例项目，但目前还不清楚我应该做什么。我的意思是将所有代码复制并粘贴到我的项目中吗？我应该复制和粘贴某些部分吗？我是否必须编写自己的代码才能登录Google Play游戏？
答案 0 :(得分：0)
您应该使用getApiClient（）而不是mGoogleApiClient。
假设您的活动布局包含四个按钮：
Leaderboard button - To launch the leaderboards,
Achievement button - To launch achievements
Sign in and Sign out buttons
对于排行榜，我们会推送best minutes, best distance covered and an overall highscore的分数。
为了取得成就，我们会根据某些条件解锁四项成就 - survivor, warrior, lord, pride。
以下是你如何去做的事情：
public class GMSActivity extends BaseGameActivity implements OnClickListener{
Button lead;
Button achv;
final int RC_RESOLVE = 5000, RC_UNUSED = 5001;
//your game score. so we can push to cloud
int hS = 0;
//flags for achievements
boolean survivor;
boolean tribalWarriror;
boolean akonfemLord;
boolean zuluPride;
LinearLayout signInBar;
LinearLayout signOutBar;
Resources r;
private float bestTimeInSeconds;
private int bestTimeInMinutes;
@Override
protected void onCreate(Bundle savedInstanceState) {
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
super.onCreate(savedInstanceState);
setContentView(R.layout.gms_layout);
r = getResources();
lead = (Button)findViewById(R.id.leaderboards);
achv = (Button)findViewById(R.id.achievements);
hS = loadScores();
findViewById(R.id.sign_in_button).setOnClickListener(this);
findViewById(R.id.sign_out_button).setOnClickListener(this);
lead.setOnClickListener(this);
achv.setOnClickListener(this);
signInBar = (LinearLayout)findViewById(R.id.sign_in_bar);
signOutBar = (LinearLayout)findViewById(R.id.sign_out_bar);
checkForAchievements();
if (isSignedIn()) {
onSignInSucceeded();
}else{
onSignInFailed();
}
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(v == lead){
if (isSignedIn()) {
startActivityForResult(Games.Leaderboards.getAllLeaderboardsIntent(getApiClient()), RC_UNUSED);
} else {
showAlert(getString(R.string.leaderboards_not_available));
}
}else if(v ==achv){
if (isSignedIn()) {
startActivityForResult(Games.Achievements.getAchievementsIntent(getApiClient()), RC_UNUSED);
} else {
showAlert(getString(R.string.achievements_not_available));
}
}else if(v.getId() == R.id.sign_in_button){
beginUserInitiatedSignIn();
}else if(v.getId() == R.id.sign_out_button){
signOut();
hello.setText(getString(R.string.signed_out_greeting));
signInBar.setVisibility(View.VISIBLE);
signOutBar.setVisibility(View.GONE);
}
@Override
public void onSignInFailed() {
hello.setText(getString(R.string.signed_out_greeting));
signInBar.setVisibility(View.VISIBLE);
signOutBar.setVisibility(View.GONE);
}
@Override
public void onSignInSucceeded() {
signInBar.setVisibility(View.GONE);
signOutBar.setVisibility(View.VISIBLE);
// Set the greeting appropriately on main menu
Player p = Games.Players.getCurrentPlayer(getApiClient());
String displayName;
if (p == null) {
// Log.w(TAG, "mGamesClient.getCurrentPlayer() is NULL!");
displayName = "";
} else {
displayName = p.getDisplayName();
}
// hello.setText("Hello, " + displayName);
pushAccomplishments();
Toast.makeText(this, getString(R.string.your_progress_will_be_uploaded),
Toast.LENGTH_LONG).show();
}
//check for achievements and unlock the appropriate ones
void checkForAchievements() {
// Check if each condition is met; if so, unlock the corresponding
// achievement.
bestTimeInSeconds = loadGameBestTimeSec();
if(bestTimeInSeconds >= 900){ //15 minutes
survivor = true;
tribalWarriror = true;
}
}
void pushAccomplishments() {
if (survivor)
Games.Achievements.unlock(getApiClient(), getString(R.string.achievement_survivor));
if (tribalWarriror)
Games.Achievements.unlock(getApiClient(), getString(R.string.achievement_tribal_warrior));
if(bestTimeInSeconds >= 60){ //1 minute atleast
bestTimeInMinutes = (int)bestTimeInSeconds/60;
Games.Leaderboards.submitScore(getApiClient(), getString(R.string.leaderboard_best_time_minutes), bestTimeInMinutes);
}
if(bestTimeInSeconds >= 10){ // 1 meter atleast
int bestDistance = (int)bestTimeInSeconds/10;
Games.Leaderboards.submitScore(getApiClient(), getString(R.string.leaderboard_best_distance_meters), bestDistance);
}
Games.Leaderboards.submitScore(getApiClient(), getString(R.string.leaderboard_top_score_points), hS);
}
@Override
//loading scores and achievements
private int loadScores() {
// TODO Auto-generated method stub
int score = 0;
try{
preferences = new SecurePreferences(getApplicationContext(),
"besiPreferences", "1234", true);
score = Integer.parseInt(preferences.getString("highScore"));
}catch(Exception e){}
return score;
}
private float loadGameBestTimeSec() {
float time = 0;
try{
preferences = new SecurePreferences(getApplicationContext(),
"besiPreferences", "1234", true);
time = Float.parseFloat(preferences.getString("gameTimeSec"));
}catch(Exception e){}
return time;
}
private int loadCalabashesCompleted() {
try{
preferences = new SecurePreferences(getApplicationContext(),
"makolaPref", "1234", true);
return Integer.parseInt(preferences.getString("bookCompleted")== null ? "0" : preferences.getString("bookCompleted"));
}catch(Exception e){
return 0;
}
}
private int loadLevelCompleted() {
try{
preferences = new SecurePreferences(getApplicationContext(),
"makolaPref", "1234", true);
return Integer.parseInt(preferences.getString("levelCompleted")== null ? "0" : preferences.getString("levelCompleted"));
}catch(Exception e){
return 0;
}
}
}