每次點擊按鈕時應用程序崩潰？

對於我開始構建的應用程序有問題。每當我按下屏幕上的按鈕，整個事情就會崩潰。我不確定自己做錯了什麼，因爲代碼與另一個應用程序相同，我正在測試相同的功能，並且在那裏可以正常工作。代碼：每次點擊按鈕時應用程序崩潰？

import android.app.Activity; 
import android.content.Intent; 
import android.os.Bundle; 
import android.support.annotation.NonNull; 
import android.support.v7.app.AppCompatActivity; 
import android.util.Log; 
import android.view.View; 
import android.view.WindowManager; 

import com.google.android.gms.common.ConnectionResult; 
import com.google.android.gms.common.api.GoogleApiClient; 
import com.google.android.gms.games.Games; 
import com.google.android.gms.games.GamesActivityResultCodes; 
import com.google.android.gms.games.GamesStatusCodes; 
import com.google.android.gms.games.multiplayer.Invitation; 
import com.google.android.gms.games.multiplayer.Multiplayer; 
import com.google.android.gms.games.multiplayer.OnInvitationReceivedListener; 
import com.google.android.gms.games.multiplayer.Participant; 
import com.google.android.gms.games.multiplayer.realtime.RealTimeMessage; 
import com.google.android.gms.games.multiplayer.realtime.RealTimeMessageReceivedListener; 
import com.google.android.gms.games.multiplayer.realtime.Room; 
import com.google.android.gms.games.multiplayer.realtime.RoomConfig; 
import com.google.android.gms.games.multiplayer.realtime.RoomStatusUpdateListener; 
import com.google.android.gms.games.multiplayer.realtime.RoomUpdateListener; 

import java.util.ArrayList; 
import java.util.List; 

public class Menu extends AppCompatActivity implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, RoomUpdateListener, RealTimeMessageReceivedListener, RoomStatusUpdateListener { 

public GoogleApiClient mGoogleApiClient; 
final static int RC_SELECT_PLAYERS = 10000; 
final static int RC_WAITING_ROOM = 10002; 
boolean mPlaying = false; 
private String mRoomId; 
private Room mRoom; 
private OnInvitationReceivedListener mListener; 
private String TAG = "Chip In"; 
private int MIN_PLAYERS = 2; 

public void onStartMatchClicked(View view) { 
    Intent intent = Games.RealTimeMultiplayer.getSelectOpponentsIntent(mGoogleApiClient, 1, 1); 
    startActivityForResult(intent, RC_SELECT_PLAYERS); 
} 

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

} 

// returns whether there are enough players to start the game - in this case 2 
boolean shouldStartGame(Room room) { 
    int connectedPlayers = 0; 
    for (Participant p : room.getParticipants()) { 
     if (p.isConnectedToRoom()) ++connectedPlayers; 
    } 
    return connectedPlayers >= MIN_PLAYERS; 
} 

// Returns whether the room is in a state where the game should be cancelled. 
boolean shouldCancelGame(Room room) { 
    mRoomId = room.getRoomId(); 
    mRoom = room; 
    // TODO: Your game-specific cancellation logic here. For example, you might decide to 
    // cancel the game if enough people have declined the invitation or left the room. 
    // You can check a participant's status with Participant.getStatus(). 
    // (Also, your UI should have a Cancel button that cancels the game too) 
    return false; 
} 

public void testMethod(View view) { 
    Intent quickGameIntent = new Intent(this, Help.class); 
    startActivity(quickGameIntent); 
} 

public void quickGame() { 

    // auto-matches specified range of players 
    Bundle am = RoomConfig.createAutoMatchCriteria(1, 1, 0); 

    // Room configuration 
    RoomConfig.Builder roomConfigBuilder = makeBasicRoomConfigBuilder(); 
    roomConfigBuilder.setAutoMatchCriteria(am); 
    RoomConfig roomConfig = roomConfigBuilder.build(); 

    // Create RTM room 
    Games.RealTimeMultiplayer.create(mGoogleApiClient, roomConfig); 

    // Screen stays on during handshake! 
    getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 

    // go to game screen 
} 

@Override 
public void onActivityResult(int request, int response, Intent data) { 
    if (request == RC_SELECT_PLAYERS) { 
     if (response == Activity.RESULT_OK) { 
      // get the invitee list 
      Bundle extras = data.getExtras(); 
      final ArrayList<String> invitees = 
        data.getStringArrayListExtra(Games.EXTRA_PLAYER_IDS); 

      // get auto-match criteria 
      Bundle autoMatchCriteria = null; 
      int minAutoMatchPlayers = 
        data.getIntExtra(Multiplayer.EXTRA_MIN_AUTOMATCH_PLAYERS, 0); 
      int maxAutoMatchPlayers = 
        data.getIntExtra(Multiplayer.EXTRA_MAX_AUTOMATCH_PLAYERS, 0); 

      if (minAutoMatchPlayers > 0) { 
       autoMatchCriteria = RoomConfig.createAutoMatchCriteria(
         minAutoMatchPlayers, maxAutoMatchPlayers, 0); 
      } else { 
       autoMatchCriteria = null; 
      } 

      // create the room and specify a variant if appropriate 
      RoomConfig.Builder roomConfigBuilder = makeBasicRoomConfigBuilder(); 
      roomConfigBuilder.addPlayersToInvite(invitees); 
      if (autoMatchCriteria != null) { 
       roomConfigBuilder.setAutoMatchCriteria(autoMatchCriteria); 
      } 
      RoomConfig roomConfig = roomConfigBuilder.build(); 
      Games.RealTimeMultiplayer.create(mGoogleApiClient, roomConfig); 

      // prevent screen from sleeping during handshake 
      getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 
     } 
     else if (response == Activity.RESULT_CANCELED) { 
      // Waiting room was dismissed with the back button. The meaning of this 
      // action is up to the game. You may choose to leave the room and cancel the 
      // match, or do something else like minimize the waiting room and 
      // continue to connect in the background. 

      // in this example, we take the simple approach and just leave the room: 
      Games.RealTimeMultiplayer.leave(mGoogleApiClient, null, mRoomId); 
      getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 
     } 
     else if (response == GamesActivityResultCodes.RESULT_LEFT_ROOM) { 
      // player wants to leave the room. 
      Games.RealTimeMultiplayer.leave(mGoogleApiClient, null, mRoomId); 
      getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 
     } 
    } 
} 

// create a RoomConfigBuilder that's appropriate for your implementation 
private RoomConfig.Builder makeBasicRoomConfigBuilder() { 
    return RoomConfig.builder(this).setMessageReceivedListener(this).setRoomStatusUpdateListener(this); 
} 

public void onConnected(Bundle connectionHint) { 

    if (connectionHint != null) { 
     Invitation inv = connectionHint.getParcelable(Multiplayer.EXTRA_INVITATION); 

     if (inv != null) { 
      // accept invitation 
      RoomConfig.Builder roomConfigBuilder = makeBasicRoomConfigBuilder(); 
      roomConfigBuilder.setInvitationIdToAccept(inv.getInvitationId()); 
      Games.RealTimeMultiplayer.join(mGoogleApiClient, roomConfigBuilder.build()); 

      // prevent screen from sleeping during handshake 
      getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 

      // go to game screen 
     } 
    } 

} 

@Override 
public void onConnectionSuspended(int i) { 
    Log.d(TAG, "onConnectionSuspended() called. Trying to reconnect."); 
    mGoogleApiClient.connect(); 
} 

// RoomUpdateListener methods: 
// this three methods overridden 
@Override 
public void onRoomCreated(int statusCode, Room room) { 
    if (statusCode != GamesStatusCodes.STATUS_OK) { 
     // let screen go to sleep 
     getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 

     // show error message, return to main screen. 

     return; 
    } 
    // get waiting room intent 
    Intent i = Games.RealTimeMultiplayer.getWaitingRoomIntent(mGoogleApiClient, room, Integer.MAX_VALUE); 
    startActivityForResult(i, RC_WAITING_ROOM); 
} 

@Override 
public void onJoinedRoom(int statusCode, Room room) { 
    if (statusCode != GamesStatusCodes.STATUS_OK) { 
     // let screen go to sleep 
     getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 

     // show error message, return to main screen. 

     return; 
    } 
    // get waiting room intent 
    Intent i = Games.RealTimeMultiplayer.getWaitingRoomIntent(mGoogleApiClient, room, Integer.MAX_VALUE); 
    startActivityForResult(i, RC_WAITING_ROOM); 
} 

@Override 
public void onRoomConnected(int statusCode, Room room) { 
    if (statusCode != GamesStatusCodes.STATUS_OK) { 
     // let screen go to sleep 
     getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 

     // show error message, return to main screen. 
    } 
} 

// Players Connected overridden methods 
@Override 
public void onPeersConnected(Room room, List<String> peers) { 
    if (mPlaying) { 
     // add new player to an ongoing game 
    } else if (shouldStartGame(room)) { 
     // start game! 
    } 
} 

@Override 
public void onPeersDisconnected(Room room, List<String> peers) { 
    if (mPlaying) { 
     // do game-specific handling of this -- remove player's avatar 
     // from the screen, etc. If not enough players are left for 
     // the game to go on, end the game and leave the room. 
    } else if (shouldCancelGame(room)) { 
     // cancel the game 
     Games.RealTimeMultiplayer.leave(mGoogleApiClient, null, mRoomId); 
     getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 
    } 
} 

@Override 
public void onPeerLeft(Room room, List<String> peers) { 
    // peer left -- see if game should be canceled 
    if (!mPlaying && shouldCancelGame(room)) { 
     Games.RealTimeMultiplayer.leave(mGoogleApiClient, null, mRoomId); 
     getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 
    } 
} 

@Override 
public void onPeerDeclined(Room room, List<String> peers) { 
    // peer declined invitation -- see if game should be canceled 
    if (!mPlaying && shouldCancelGame(room)) { 
     Games.RealTimeMultiplayer.leave(mGoogleApiClient, null, mRoomId); 
     getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 
    } 
} 

// code from: https://github.com/playgameservices/android-basic-samples/blob/83dda7c60e13b6c129a8e104437ec69d8a257fa0/BasicSamples/ButtonClicker/src/main/java/com/google/example/games/bc/MainActivity.java 
@Override 
public void onLeftRoom(int statusCode, String roomId) { 
    // we have left the room; return to main screen. 
    Log.d(TAG, "onLeftRoom, code " + statusCode); 
    switchToMainScreen(); 
} 

private void switchToMainScreen() { 
} 

// RealTimeMessage methods 
@Override 
public void onRealTimeMessageReceived(RealTimeMessage realTimeMessage) { 

} 

// RoomStatusUpdateListenerMethods 
@Override 
public void onRoomConnecting(Room room) { 

} 

@Override 
public void onRoomAutoMatching(Room room) { 

} 

@Override 
public void onPeerInvitedToRoom(Room room, List<String> list) { 

} 



@Override 
public void onPeerJoined(Room room, List<String> list) { 

} 

@Override 
public void onConnectedToRoom(Room room) { 

} 

// overridden code 
@Override 
public void onDisconnectedFromRoom(Room room) { 
    // leave the room 
    Games.RealTimeMultiplayer.leave(mGoogleApiClient, null, mRoomId); 

    // clear the flag that keeps the screen on 
    getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 

    // show error message and return to main screen 
} 

@Override 
public void onP2PConnected(String s) { 

} 

@Override 
public void onP2PDisconnected(String s) { 

} 

@Override 
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) { 

} 

}

錯誤：

FATAL EXCEPTION: main 
       Process: com.example.anna.chipin, PID: 8039 
       Theme: themes:{default=overlay:com.avn.quadralumino, iconPack:com.avn.quadralumino, fontPkg:com.avn.quadralumino, com.android.systemui=overlay:com.avn.quadralumino, com.android.systemui.navbar=overlay:com.avn.quadralumino} 
       java.lang.IllegalStateException: Could not execute method for android:onClick 
        at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:293) 
        at android.view.View.performClick(View.java:5204) 
        at android.view.View$PerformClick.run(View.java:21158) 
        at android.os.Handler.handleCallback(Handler.java:739) 
        at android.os.Handler.dispatchMessage(Handler.java:95) 
        at android.os.Looper.loop(Looper.java:148) 
        at android.app.ActivityThread.main(ActivityThread.java:5461) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
       Caused by: java.lang.reflect.InvocationTargetException 
        at java.lang.reflect.Method.invoke(Native Method) 
        at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288) 
        at android.view.View.performClick(View.java:5204)  
        at android.view.View$PerformClick.run(View.java:21158)  
        at android.os.Handler.handleCallback(Handler.java:739)  
        at android.os.Handler.dispatchMessage(Handler.java:95)  
        at android.os.Looper.loop(Looper.java:148)  
        at android.app.ActivityThread.main(ActivityThread.java:5461)  
        at java.lang.reflect.Method.invoke(Native Method)  
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)  
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)  
       Caused by: java.lang.IllegalArgumentException: GoogleApiClient parameter is required. 
        at com.google.android.gms.common.internal.zzac.zzb(Unknown Source) 
        at com.google.android.gms.games.Games.zzb(Unknown Source) 
        at com.google.android.gms.games.Games.zzi(Unknown Source) 
        at com.google.android.gms.games.internal.api.RealTimeMultiplayerImpl.getSelectOpponentsIntent(Unknown Source) 
        at com.example.anna.chipin.Menu.onStartMatchClicked(Menu.java:44) 
        at java.lang.reflect.Method.invoke(Native Method)  
        at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288)  
        at android.view.View.performClick(View.java:5204)  
        at android.view.View$PerformClick.run(View.java:21158)  
        at android.os.Handler.handleCallback(Handler.java:739)  
        at android.os.Handler.dispatchMessage(Handler.java:95)  
        at android.os.Looper.loop(Looper.java:148)  
        at android.app.ActivityThread.main(ActivityThread.java:5461)  
        at java.lang.reflect.Method.invoke(Native Method)  
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)  
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

XML：

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:app="http://schemas.android.com/apk/res-auto" 
xmlns:tools="http://schemas.android.com/tools" 
android:id="@+id/activity_menu" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:paddingBottom="@dimen/activity_vertical_margin" 
android:paddingLeft="@dimen/activity_horizontal_margin" 
android:paddingRight="@dimen/activity_horizontal_margin" 
android:paddingTop="@dimen/activity_vertical_margin" 
tools:context="com.example.anna.chipin.Menu"> 

<RelativeLayout 
    android:layout_width="match_parent" 
    android:layout_height="match_parent"> 

    <Button 
     android:text="Sign Out" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:id="@+id/button4" 
     android:layout_alignParentBottom="true" 
     android:layout_alignParentLeft="true" 
     android:layout_alignParentStart="true" 
     android:onClick="signOut"/> 

    <Button 
     android:text="Help" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentBottom="true" 
     android:layout_alignParentRight="true" 
     android:layout_alignParentEnd="true" 
     android:id="@+id/button5" /> 

    <TextView 
     android:text="Main Menu" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentTop="true" 
     android:layout_centerHorizontal="true" 
     android:layout_marginTop="39dp" 
     android:id="@+id/textView3" 
     android:textSize="30sp" /> 

    <Button 
     android:text="Quick Game" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_marginTop="56dp" 
     android:id="@+id/button2" 
     android:layout_below="@+id/textView3" 
     android:layout_centerHorizontal="true" 
     android:onClick="onStartMatchClicked"/> 

    <Button 
     android:text="Scoreboard" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_marginTop="21dp" 
     android:id="@+id/button6" 
     android:layout_below="@+id/button3" 
     android:layout_centerHorizontal="true" /> 

    <Button 
     android:text="Custom Game" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:id="@+id/button3" 
     android:layout_marginTop="19dp" 
     android:layout_below="@+id/button2" 
     android:layout_centerHorizontal="true" /> 

    </RelativeLayout> 
</LinearLayout>

來源

2017-02-12 Nah.

也發佈'activity_main.xml' – azizbekian

我認爲你在xml文件中設置了單擊監聽器，並且方法名稱與你在xml中分配的與java文件中的配置不匹配。但是正如@azizbekian所說，沒有xml文件就沒有辦法知道。 – Rookie

錯誤不是'OnClick'方法不起作用。「幫助」中需要'GoogleApiClient'錯誤活動 –

好像你從來沒有初始化GoogleApiClient（mGoogleApiClient永遠不會初始化，並且傳遞了null值的意圖）。

請參考manual，並禁用該按鈕，直到api客戶端連接。

來源

2017-02-12 14:32:32

每次點擊按鈕時應用程序崩潰？

回答

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