你好我使用Android构建了一个小应用程序，在这个应用程序中我构建了两个活动，现在当我点击我的按钮（按钮新游戏的名称）第一个活动来打开第二个活动时，它什么都不做，但是当我再次单击此按钮可更改活动。我想在这里点击一下我发布我的两个活动的代码请帮助我。 提前致谢 第一项活动的源代码
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;
}
}
}
游戏活动的源代码
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;
}
答案 0 :(得分：1)
我在你的游戏活动onCreate()中找到了这个：
startActivityForResult(new Intent(Game.this, TTTActivity.class), ACTIVITY_SELECTION);
所以你有
TTTActivity ----点击开始----＆gt;游戏（活动）--onCreate ---＆gt;再次启动TTTActivity！
你的游戏没有显示，但它只是立即回来。
答案 1 :(得分：1)
在Game.java中使用它
startActivityForResult(new Intent(Game.this, Game.class), ACTIVITY_SELECTION);
答案 2 :(得分：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);
我觉得你不想做'startActivityForResult(new Intent(Game.this, TTTActivity.class), ACTIVITY_SELECTION);
'oncreate()
答案 3 :(得分：0)
最后我明白了，这段代码中有一些错误
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改变为自身。所以它对我来说绝对没问题。 BTW非常感谢所有试图提供帮助的人。 :)