Question

开始按钮 - ＆gt; game.class - ＆gt; gameview.class然后在game.class上再次循环，当玩家完成第一级时，它将调用gameview.class再次生成第二级。我的问题是我的计时器也会在进入第二级时重新生成并重新启动。如何在这种游戏流程中暂停和恢复计时器？

在我的Game.Class上：

public void onCreate(Bundle savedInstanceState) {
timeCounter = new TimeCounter();

    super.onCreate(savedInstanceState);
    Intent intent = getIntent();
    Bundle extras = intent.getExtras();
    this.maze = (Maze) getLastNonConfigurationInstance();
    if (this.maze == null) {
        this.maze = (Maze) extras.get("maze");
    }
    gview = new GameView(this);
    gview.setTimeCounter(timeCounter);
    gview.setMaze(this.maze);
    setContentView(gview);

和我的GameView.Class：

protected void onDraw(Canvas canvas) {
if (startTimer) {
        timeCounter.start();
        invalidate();
        int secondss = timeCounter.getTimeSeconds();
        String text = String.format("%02d:%02d", secondss / 60,
                secondss % 60);
        timer.getTextBounds(text, 0, text.length(), textBounds);
        canvas.drawText(text, (this.getWidth() - textBounds.right) - 5,
                (this.getHeight() - textBounds.bottom) - 5, timer);
    }

当第一级完成时，它将调用此方法：

void shownextmaze() {
    Random rand = new Random();
    Intent game = new Intent(context, Game.class);
    nextmaze = rand.nextInt(6) + 1;

    Maze maze = MazeCreator.getMaze(nextmaze);
    game.putExtra("maze", maze);
    context.startActivity(game);
    timeCounter.resume();

}

如何清除4个级别之前我的计时器如何运行？

Answer 1

合乎逻辑的是，将调用onDraw并重新启动计时器。您应该在服务中启动计时器并在后台线程中运行它。每次要访问它时，您都可以绑定到服务。

选中guideline。

在此代码中，每次打开应用程序时，您都会看到更新的值：

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        startService(new Intent(MainActivity.this, MyService.class));
        doBindService();

        ((Button) findViewById(R.id.button1))
                .setOnClickListener(new OnClickListener() {

                    @Override
                    public void onClick(View v) {
                        if (mBoundService != null) {
                            ((TextView) findViewById(R.id.textView1))
                                    .setText(mBoundService.getValue() + "");
                        }
                    }
                });
        ((Button) findViewById(R.id.button2))
                .setOnClickListener(new OnClickListener() {

                    @Override
                    public void onClick(View v) {
                        mBoundService = null;
                        stopService(new Intent(MainActivity.this,
                                MyService.class));
                        doUnbindService();
                    }
                });

    }

    private MyService mBoundService;
    private boolean mIsBound;

    private ServiceConnection mConnection = new ServiceConnection() {
        public void onServiceConnected(ComponentName className, IBinder service) {
            mBoundService = ((MyService.LocalBinder) service).getService();
            ((TextView) findViewById(R.id.textView1)).setText(mBoundService
                    .getValue() + "");

        }

        public void onServiceDisconnected(ComponentName className) {
            mBoundService = null;
        }
    };

    void doBindService() {
        bindService(new Intent(MainActivity.this, MyService.class),
                mConnection, Context.BIND_AUTO_CREATE);
        mIsBound = true;
    }

    void doUnbindService() {
        if (mIsBound) {
            // Detach our existing connection.
            unbindService(mConnection);
            mIsBound = false;
        }
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        doUnbindService();
    }
}

一项服务：

public class MyService extends Service {

    private final IBinder mBinder = new LocalBinder();
    // private TimeCounter timeCounter;
    int x = 0;

    public class LocalBinder extends Binder {
        MyService getService() {
            return MyService.this;
        }
    }

    @Override
    public void onCreate() {
        new Thread(new Runnable() {
            public void run() {
                while (true) {
                    x++;
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }
        }).start();
    }

    @Override
    public IBinder onBind(Intent intent) {
        return mBinder;
    }

    public int getValue() {
        return x;
    }
}

也许你需要activity_main.xml：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="${relativePackage}.${activityClass}" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/textView1"
        android:text="Show Updated value" />

    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/button1"
        android:layout_marginTop="28dp"
        android:text="Stop Service" />

</RelativeLayout>

onDraw上的计时器

1 个答案: