1 
package com.example.tictactoemain;

import com.example.tictactoelib.GameActivity;
import com.example.tictactoelib.GameView.State;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

import android.content.Intent;
import android.view.View;
import android.view.View.OnClickListener;

import com.example.tictactoelib.GameActivity;

public class MainActivity extends Activity {

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

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

    private void startGame(boolean startWithHuman) {
        Intent i = new Intent(this, GameActivity.class);
        i.putExtra(GameActivity.EXTRA_START_PLAYER, startWithHuman ? State.PLAYER1.getValue() : State.PLAYER2.getValue());
        startActivity(i);
    }

}

游戏活动：

package com.example.tictactoelib;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

import com.example.tictactoelib.GameView.State;

public class GameActivity extends Activity {

    public static final String EXTRA_START_PLAYER = 
            "com.example.android.tictactoelib.GameActivity.EXTRA_START_PLAYER";


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

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

}

在 MainActivity 我收到一个错误：

EXTRA_START_PLAYER cannot be resolved or is not a field.

主项目引用 tictactoelib 作为带有绿色复选框的库。tictactoelib 也被创建为一个库项目。尽管 EXTRA_START_PLAYER 被定义为公共静态最终字符串，但主项目似乎没有看到它。我正在拼凑 TicTacToe SDK android-17 项目，所以我正在尝试解决错误，尽管我还不明白问题出在哪里。

我也想知道的确切含义：="com.example.android.tictactoelib.GameActivity.EXTRA_START_PLAYER";

提前致谢...

4

1 回答 1

0

利用 

private void startGame(boolean startWithHuman) {
        Intent i = new Intent(this, GameActivity.class);
        i.putExtra("com.example.android.tictactoelib.GameActivity.EXTRA_START_PLAYER", startWithHuman ? State.PLAYER1.getValue() : State.PLAYER2.getValue());
        startActivity(i);
    }

相反，如果您仅在一项活动中使用它

于 2013-07-01T05:34:10.783 回答