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Hello i build a small app using Android, in this app i built two activity and now when i click on my button(name of button New Game) of first activity to switch on second activity, it do nothing, but when i click on this button again it changes the activity. I want this in one click here i am posting code of my both activity please help me. Thanks in advance source code of first activity

public class TTTActivity extends Activity implements OnClickListener {
public int result;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    View newButton = findViewById(R.id.new_button);
    newButton.setOnClickListener(this);        

    View exitButton = findViewById(R.id.exit_button);
    exitButton.setOnClickListener(this);

}
private void quitApplication()
{
    finish();
}
private void startGame(){
    startActivity(new Intent(this, Game.class));
}


@Override
public void onClick(View v) {
    // TODO Auto-generated method stub
    switch (v.getId()) {
    case R.id.new_button:
        //startNewGameConfirm();
        startGame();
        break;
    case R.id.exit_button:
        quitApplication();
        break;

    }

}

}

Source code of game activity

public class Game extends Activity {
private final int GAME_VICTORY = 0x1;
private final int GAME_DEFEAT = 0x2;
private final int GAME_TIE = 0x3;
private final int GAME_CONTINUES = 0x4;
private final float UNIQUE_MAX_WEIGHT=0.85f;
static final int ACTIVITY_SELECTION = 1;

private float[] w;  
private int[] c;        
private int[][] PosTable;   
private Button[] buttons;

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.game);

    buttons = new Button[9];

    buttons[0] = (Button) findViewById(R.id.Button01);
    buttons[0].setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            btnClicked(0);
        }
    });
    buttons[1] = (Button) findViewById(R.id.Button02);
    buttons[1].setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            btnClicked(1);
        }
    });
    buttons[2] = (Button) findViewById(R.id.Button03);
    buttons[2].setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            btnClicked(2);
        }
    });
    buttons[3] = (Button) findViewById(R.id.Button04);
    buttons[3].setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            btnClicked(3);
        }
    });
    buttons[4] = (Button) findViewById(R.id.Button05);
    buttons[4].setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            btnClicked(4);
        }
    });
    buttons[5] = (Button) findViewById(R.id.Button06);
    buttons[5].setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            btnClicked(5);
        }

    });
    buttons[6] = (Button) findViewById(R.id.Button07);
    buttons[6].setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            btnClicked(6);
        }
    });
    buttons[7] = (Button) findViewById(R.id.Button08);
    buttons[7].setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            btnClicked(7);
        }
    });
    buttons[8] = (Button) findViewById(R.id.Button09);
    buttons[8].setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            btnClicked(8);
        }
    });

    Button button = (Button) findViewById(R.id.Button10);
    button.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            buttonsEnable(true);
           beginPlay();
        }
    });

  startActivityForResult(new Intent(Game.this, TTTActivity.class), ACTIVITY_SELECTION);


    DisplayMetrics dm = getApplicationContext().getResources().getDisplayMetrics();
    float h = (float) (dm.heightPixels - (100.0)*dm.density);
    float w = dm.widthPixels;
    for(int i=0;i<9;i++) {
        buttons[i].setHeight((int) (h/3));
        buttons[i].setWidth((int) (w/3));
    }
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    beginPlay();
    if (requestCode == ACTIVITY_SELECTION) {
        if (resultCode == RESULT_OK) {
            Bundle extras = data.getExtras();
            if (extras.getString("result").equals("CPU")) cpuPlay();
        }
    }
}
private void beginPlay() {
    //initializations start 
    w=new float[9];
    c=new int[9];
    InitTable();
    w[0]=0.7f;
    w[1]=0.4f;
    w[2]=0.7f;
    w[3]=0.4f;
    w[4]=0.7f;
    w[5]=0.4f;
    w[6]=0.7f;
    w[7]=0.4f;
    w[8]=0.7f;
    //c[i] : 0 for empty, 1 for cpu, 2 for user
    for(int i=0;i<9;i++)
        c[i]=0;
    //initializations done

    //now we play!
    for(int i=0;i<9;i++)
        updateBtn(i);
}

private void cpuPlay() {
    //computer plays first
    int cpos=getDecision();
    if (cpos == -1) {
        Toast toast = Toast.makeText(getApplicationContext(), "GAME OVER", Toast.LENGTH_SHORT);
        toast.show();
        return;
    }
    c[cpos]=1;
    updateBtn(cpos);
    int gstatus = CheckGameStatus();
    if (gstatus == GAME_VICTORY) {
        Toast toast = Toast.makeText(getApplicationContext(), "Congrts You Won", Toast.LENGTH_SHORT);
        toast.show();
    }
    else if (gstatus == GAME_DEFEAT) {
        Toast toast = Toast.makeText(getApplicationContext(), "Sorry, You Lost", Toast.LENGTH_SHORT);
        toast.show();
    }
    else if (gstatus == GAME_TIE) {
        Toast toast = Toast.makeText(getApplicationContext(), "Its a TIE, press reset to play again", Toast.LENGTH_SHORT);
        toast.show();
    }
    else if (gstatus == GAME_CONTINUES) {
        //user plays
    }
}
private void updateBtn(int i) {
    if(c[i]==0)
        buttons[i].setText(" ");
    else if(c[i]==1)
        buttons[i].setText("O");
    else
        buttons[i].setText("X");
}
private int CheckGameStatus() {
    int s = 0;
    //check horizontal
    if(c[0]==2&&c[1]==2&&c[2]==2) {s = GAME_VICTORY;}
    if(c[3]==2&&c[4]==2&&c[5]==2) {s = GAME_VICTORY;}
    if(c[6]==2&&c[7]==2&&c[8]==2) {s = GAME_VICTORY;}
    if(c[0]==1&&c[1]==1&&c[2]==1) {s = GAME_DEFEAT;}
    if(c[3]==1&&c[4]==1&&c[5]==1) {s = GAME_DEFEAT;}
    if(c[6]==1&&c[7]==1&&c[8]==1) {s = GAME_DEFEAT;}
    //check vertical
    if(c[0]==2&&c[3]==2&&c[6]==2) {s = GAME_VICTORY;}
    if(c[1]==2&&c[4]==2&&c[7]==2) {s = GAME_VICTORY;}
    if(c[2]==2&&c[5]==2&&c[8]==2) {s = GAME_VICTORY;}
    if(c[0]==1&&c[3]==1&&c[6]==1) {s = GAME_DEFEAT;}
    if(c[1]==1&&c[4]==1&&c[7]==1) {s = GAME_DEFEAT;}
    if(c[2]==1&&c[5]==1&&c[8]==1) {s = GAME_DEFEAT;}
    //check diagonal
    if(c[0]==2&&c[4]==2&&c[8]==2) {s = GAME_VICTORY;}
    if(c[2]==2&&c[4]==2&&c[6]==2) {s = GAME_VICTORY;}
    if(c[0]==1&&c[4]==1&&c[8]==1) {s = GAME_DEFEAT;}
    if(c[2]==1&&c[4]==1&&c[6]==1) {s = GAME_DEFEAT;}

    if (s != 0) {
        buttonsEnable(false);
        return s;
    }

    boolean box_empty = false;
    for(int i=0;i<9;i++) {
        if (c[i] == 0) box_empty = true;
    }
    if (box_empty) {    //if any box is empty -> game continues
        return GAME_CONTINUES;
    }
    else {  //else there is tie
        buttonsEnable(false);
        return GAME_TIE;
    }
}

private void buttonsEnable(boolean b) {
    for(int i=0;i<9;i++)
        buttons[i].setEnabled(b);
}

private void btnClicked(int i) {
    if(c[i]!=0) {
        Toast toast = Toast.makeText(getApplicationContext(), "Position occupied", Toast.LENGTH_SHORT);
        toast.show();
    }
    else {
        //all OK
        c[i] = 2;
        updateBtn(i);
        int gstatus = CheckGameStatus();
        if (gstatus == GAME_VICTORY) {
            Toast toast = Toast.makeText(getApplicationContext(), "Congrats You Won", Toast.LENGTH_SHORT);
            toast.show();
        }
        else if (gstatus == GAME_DEFEAT) {
            Toast toast = Toast.makeText(getApplicationContext(), "Sorry, You Lost", Toast.LENGTH_SHORT);
            toast.show();
        }
        else if (gstatus == GAME_TIE) {
            Toast toast = Toast.makeText(getApplicationContext(), "Its a TIE, press reset to play again", Toast.LENGTH_SHORT);
            toast.show();
        }
        else if (gstatus == GAME_CONTINUES) {
            cpuPlay();
        }
    }
}

private int getDecision() {
    for(int i=0;i<9;i++)
        for(int j=0;j<9;j++) {
            if(c[i]==1&&c[j]==1)    //place 'o' to win
                if(PosTable[i][j]!=-1)  //if we have 3 in a row
                    if(c[PosTable[i][j]]==0)    //if position is free
                        return PosTable[i][j];
            if(c[i]==2&&c[j]==2)    //place 'o' to prevent user's victory
                if(PosTable[i][j]!=-1)  //if we have 3 in a row
                    if(c[PosTable[i][j]]==0)    //if position is free
                        return PosTable[i][j];
        }

    if(c[0]==1&&c[8]==0) return 8;
    if(c[2]==1&&c[6]==0) return 6;
    if(c[8]==1&&c[0]==0) return 0;
    if(c[6]==1&&c[2]==0) return 2;
    Random r=new Random();
    boolean exist07=false;
    boolean[] free=new boolean[9]; //will hold the free positions
    for(int i=0;i<9;i++)
        free[i]=false;
    for(int i=0;i<9;i++)
        if(c[i]==0) {   //free ??
            free[i]=true;   //add position to free
            if(w[i]==UNIQUE_MAX_WEIGHT) return i;
        }
    //more than 1 positions with same weight
    for(int i=0;i<9;i++)
        if(free[i]) //if position is free
            if(w[i]==0.7f) exist07=true;
    if(exist07)
        for(int i=0;i<9;i++)
            if(free[i]) //if position is free
                if(w[i]==0.4f) free[i]=false;

    int j=0;
    int rn=0;
    int[] tmp;
    for(int i=0;i<9;i++)
        if(free[i]) j++;
    if(j!=0) {
        tmp=new int[j];
        rn=r.nextInt(j);
        j=0;
        for(int i=0;i<9;i++)
            if(free[i]) tmp[j++]=i;
        return tmp[rn];
    }
    else {
        return -1; //else GAME OVER
    }
}
private void InitTable() {

    PosTable=new int[9][9];
    for(int i=0;i<9;i++)
        for(int j=0;j<9;j++)
            PosTable[i][j]=-1;
    PosTable[0][1]=2;
    PosTable[0][2]=1;
    PosTable[0][3]=6;
    PosTable[0][4]=8;
    PosTable[0][6]=3;
    PosTable[0][8]=4;
    PosTable[1][2]=0;
    PosTable[1][4]=7;
    PosTable[1][7]=4;
    PosTable[2][4]=6;
    PosTable[2][5]=8;
    PosTable[2][6]=4;
    PosTable[2][8]=5;
    PosTable[3][4]=5;
    PosTable[3][5]=4;
    PosTable[3][6]=0;
    PosTable[4][5]=3;
    PosTable[4][6]=2;
    PosTable[4][7]=1;
    PosTable[4][8]=0;
    PosTable[5][8]=2;
    PosTable[6][7]=8;
    PosTable[6][8]=7;
    PosTable[7][8]=6;

}
4

4 回答 4

1

我在onCreate()你的游戏活动中找到了这个：

 startActivityForResult(new Intent(Game.this, TTTActivity.class), ACTIVITY_SELECTION);

所以你有了

TTTActivity----点击开始---->游戏（活动）--onCreate--->再次启动TTTActivity！

您的游戏没有显示，但它会立即 ping 回来。

于 2012-04-17T07:55:52.983 回答
1

在你的 Game.java 中使用它

startActivityForResult(new Intent(Game.this, Game.class), ACTIVITY_SELECTION);

于 2012-04-23T05:36:46.197 回答
0

我终于明白了，这段代码有一些错误

startActivityForResult(new Intent(Game.this, TTTActivity.class), ACTIVITY_SELECTION);

应该是这样的。

startActivityForResult(new Intent(Game.this, Game.class), ACTIVITY_SELECTION);

实际上，它需要将活动从自身变为自身。所以它对我来说绝对没问题。顺便说一句，非常感谢所有试图提供帮助的人。:)

于 2012-04-19T07:57:08.407 回答
0

添加此代码...

 Button newButton = (Button)findViewById(R.id.new_button);
    newButton.setOnClickListener(this);        

    Button exitButton =(Button) findViewById(R.id.exit_button);
    exitButton.setOnClickListener(this);

我不认为你想'startActivityForResult(new Intent(Game.this, TTTActivity.class), ACTIVITY_SELECTION); 在oncreate()

于 2012-04-17T07:56:32.307 回答