为啥显示我的按钮，然后快速隐藏 onResume

Posted 2023-04-14

【中文标题】为啥显示我的按钮，然后快速隐藏 onResume

【英文标题】：Why my button is shown and than quickly hidden onResume为什么显示我的按钮，然后快速隐藏 onResume

【发布时间】：2015-10-01 10:01:52

【问题描述】：

这可能只是一个愚蠢的错误，但我无法修复它。我有一个 Google+ 登录按钮，当用户未登录时会显示。我还有一个退出按钮，当用户登录时它会消失。除了我回到活动时，一切正常（ onResume) 我可以看到红色的 Google+ 按钮大约一秒钟，然后它被隐藏并出现退出按钮。如何删除这一秒，在此期间我仍然可以看到 Google+ 按钮？

这是我的布局：

XML 代码：

<ImageView
    android:layout_
    android:layout_
    android:id="@+id/startGameView"
    android:src="@drawable/play"
    android:layout_alignParentBottom="true"
    android:layout_centerHorizontal="true"/>

<LinearLayout
    android:orientation="horizontal"
    android:layout_
    android:layout_
    android:layout_above="@+id/startGameView"
    android:layout_centerHorizontal="true"
    android:layout_marginBottom="46dp">
    <!-- show achievements -->
    <Button
        android:id="@+id/show_achievements"
        android:layout_
        android:layout_
        android:text="Achievements"/>

    <!-- show leaderboards -->
    <Button
        android:id="@+id/show_leaderboard"
        android:layout_
        android:layout_
        android:text="Leaderboard"/>
</LinearLayout>

活动中的代码：

public class StartActivity extends BaseGameActivity implements View.OnClickListener
private ImageView mPlay;

@Override
protected void onCreate(Bundle savedInstanceState) 
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_start);

    mPlay = (ImageView)findViewById(R.id.startGameView);
    mPlay.setOnClickListener(new View.OnClickListener() 
        @Override
        public void onClick(View v) 
            //play animations
            YoYo.with(Techniques.Pulse)
                    .duration(200)
                    .playOn(findViewById(R.id.startGameView));
            Intent intent = new Intent(StartActivity.this, MainActivity.class);
            startActivity(intent);
        
    );
    findViewById(R.id.sign_in_button).setOnClickListener(this);
    findViewById(R.id.sign_out_button).setOnClickListener(this);
    findViewById(R.id.show_achievements).setOnClickListener(this);
    findViewById(R.id.show_leaderboard).setOnClickListener(this);
    //mSignOutButton = (Button)findViewById(R.id.sign_out_button);


@Override
public boolean onCreateOptionsMenu(Menu menu) 
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_start, menu);
    return true;


@Override
public boolean onOptionsItemSelected(MenuItem item) 
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) 
        return true;
    

    return super.onOptionsItemSelected(item);


@Override
public void onSignInFailed() 
    findViewById(R.id.sign_in_button).setVisibility(View.VISIBLE);
    findViewById(R.id.sign_out_button).setVisibility(View.GONE);


@Override
public void onSignInSucceeded() 
    findViewById(R.id.sign_in_button).setVisibility(View.GONE);
    findViewById(R.id.sign_out_button).setVisibility(View.VISIBLE);


@Override
public void onClick(View view) 
    if (view.getId() == R.id.sign_in_button) 
        beginUserInitiatedSignIn();
    else if (view.getId() == R.id.sign_out_button) 
        signOut();
        findViewById(R.id.sign_in_button).setVisibility(View.VISIBLE);
        findViewById(R.id.sign_out_button).setVisibility(View.GONE);
    else if (view.getId() == R.id.show_achievements)
        Toast.makeText(StartActivity.this,"achivements",Toast.LENGTH_SHORT).show();
        startActivityForResult(Games.Achievements.getAchievementsIntent(getApiClient()), 1);
    else if(view.getId() == R.id.show_leaderboard)
        Toast.makeText(StartActivity.this,"leaderboard",Toast.LENGTH_SHORT).show();
        startActivityForResult(Games.Leaderboards.getLeaderboardIntent(
                getApiClient(), getString(R.string.number_of_solved_math_problems_leaderboard)), 2);
    

BaseActivity 代码：

public abstract class BaseGameActivity extends FragmentActivity implements
    GameHelper.GameHelperListener 

// The game helper object. This class is mainly a wrapper around this object.
protected GameHelper mHelper;

// We expose these constants here because we don't want users of this class
// to have to know about GameHelper at all.
public static final int CLIENT_GAMES = GameHelper.CLIENT_GAMES;
public static final int CLIENT_APPSTATE = GameHelper.CLIENT_APPSTATE;
public static final int CLIENT_PLUS = GameHelper.CLIENT_PLUS;
public static final int CLIENT_ALL = GameHelper.CLIENT_ALL;

// Requested clients. By default, that's just the games client.
protected int mRequestedClients = CLIENT_GAMES;

private final static String TAG = "BaseGameActivity";
protected boolean mDebugLog = false;

/** Constructs a BaseGameActivity with default client (GamesClient). */
protected BaseGameActivity() 
    super();


/**
 * Constructs a BaseGameActivity with the requested clients.
 * @param requestedClients The requested clients (a combination of CLIENT_GAMES,
 *         CLIENT_PLUS and CLIENT_APPSTATE).
 */
protected BaseGameActivity(int requestedClients) 
    super();
    setRequestedClients(requestedClients);


/**
 * Sets the requested clients. The preferred way to set the requested clients is
 * via the constructor, but this method is available if for some reason your code
 * cannot do this in the constructor. This must be called before onCreate or getGameHelper()
 * in order to have any effect. If called after onCreate()/getGameHelper(), this method
 * is a no-op.
 *
 * @param requestedClients A combination of the flags CLIENT_GAMES, CLIENT_PLUS
 *         and CLIENT_APPSTATE, or CLIENT_ALL to request all available clients.
 */
protected void setRequestedClients(int requestedClients) 
    mRequestedClients = requestedClients;


public GameHelper getGameHelper() 
    if (mHelper == null) 
        mHelper = new GameHelper(this, mRequestedClients);
        mHelper.enableDebugLog(mDebugLog);
    
    return mHelper;


@Override
protected void onCreate(Bundle b) 
    super.onCreate(b);
    if (mHelper == null) 
        getGameHelper();
    
    mHelper.setup(this);


@Override
protected void onStart() 
    super.onStart();
    mHelper.onStart(this);


@Override
protected void onStop() 
    super.onStop();
    mHelper.onStop();


@Override
protected void onActivityResult(int request, int response, Intent data) 
    super.onActivityResult(request, response, data);
    mHelper.onActivityResult(request, response, data);


protected GoogleApiClient getApiClient() 
    return mHelper.getApiClient();


protected boolean isSignedIn() 
    return mHelper.isSignedIn();


protected void beginUserInitiatedSignIn() 
    mHelper.beginUserInitiatedSignIn();


protected void signOut() 
    mHelper.signOut();


protected void showAlert(String message) 
    mHelper.makeSimpleDialog(message).show();


protected void showAlert(String title, String message) 
    mHelper.makeSimpleDialog(title, message).show();


protected void enableDebugLog(boolean enabled) 
    mDebugLog = true;
    if (mHelper != null) 
        mHelper.enableDebugLog(enabled);
    


@Deprecated
protected void enableDebugLog(boolean enabled, String tag) 
    Log.w(TAG, "BaseGameActivity.enabledDebugLog(bool,String) is " +
            "deprecated. Use enableDebugLog(boolean)");
    enableDebugLog(enabled);


protected String getInvitationId() 
    return mHelper.getInvitationId();


protected void reconnectClient() 
    mHelper.reconnectClient();


protected boolean hasSignInError() 
    return mHelper.hasSignInError();


protected GameHelper.SignInFailureReason getSignInError() 
    return mHelper.getSignInError();

【问题讨论】：

您能添加您的 BaseGameActivity 代码吗？

我确实为 BaseActivity 添加了代码。如果您正在寻找覆盖 onResume 方法，则此活动不会执行此操作。我已经检查过了：/

在布局中默认隐藏按钮。在 onResume 中，您只需切换可见性。体验会以这种方式得到改善。

谢谢，我试试这个。

@sushantkunal 谢谢，效果很好！我添加了这个：protected void onResume() super.onResume(); if(findViewById(R.id.sign_in_button).getVisibility() == View.VISIBLE) findViewById(R.id.sign_out_button).setVisibility(View.INVISIBLE); else //findViewById(R.id.sign_in_button).setVisibility(View.VISIBLE); findViewById(R.id.sign_out_button).setVisibility(View.VISIBLE);如果您想添加您的建议作为答案，我可以接受！谢谢！

【参考方案1】：

如果您最近克隆（或刷新）示例，您会注意到不再使用 GameHelper 和 BaseGameActivity。有一个有关此更改的信息视频：Game On! - The death of BaseGameActivity。如果您只是实现接口以获取状态回调：GoogleApiClient.ConnectionCallbacks 和 GoogleApiClient.OnConnectionFailedListener，您的问题应该会消失。

关于如何使用这些接口的更多具体细节在https://developers.google.com/games/services/training/signin

【讨论】：

感谢您的回答。我不知道这两个类已被弃用。我会尝试这种方法:)

【参考方案2】：

正如我在GameHelper class 中看到的，它在onStop() 上与googleApiClient 断开连接并在onStart() 上连接。这是导致按钮闪烁的原因。

如果您不想更改 GameHelper 的实现，请进行一些 UI 改进以使其不那么烦人。

【讨论】：

感谢您的建议。但是，我已经应用了@sushant 的建议，并且效果很好。