Android 意图不将数据携带到下一个活动，并按下按钮返回到上一个活动不工作

我这里有一段代码，它基本上产生了一个数字猜测游戏。三次尝试结束后，它会带您通过屏幕进入游戏，并显示您的分数。在“游戏结束”屏幕上，您可以单击“重试”按钮，但它不符合再次打开主活动的意图。有什么建议吗

主要活动：

public class MainActivity extends Activity {
int n = 0;
Random random = new Random();
static int score = 0;
int m = random.nextInt(9 - 1) + 1;
int tries = 3;

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

public static String scoreFinal = "scoreFinal";

public void arg(){
    if (tries < 1){
        Intent intent = new Intent(this, GameOver.class);
        TextView text = (TextView) findViewById(R.id.scoreFinalText);
        intent.putExtra(scoreFinal, score);
        startActivity(intent);
        finish();
    } else {
    if (n == m) {
        TextView text = (TextView) findViewById(R.id.status);
        text.setText("You are correct! I've come up with a new number, can you guess it?.");
        score += 1;
        tries = 3;
        m = random.nextInt(9 - 1) + 1;
    } else if (n < m){
        tries -= 1;
        TextView text = (TextView) findViewById(R.id.status);
        text.setText("You are incorrect. This number is lower then mine.");
    } else if (n > m){
        tries -= 1;
        TextView text = (TextView) findViewById(R.id.status);
        text.setText("You are incorrect. This number is higher then mine.");
    }
    TextView text = (TextView) findViewById(R.id.scoreNum);
    String i = Integer.toString(score);
    text.setText(i);

    TextView text2 = (TextView) findViewById(R.id.triesNum);
    String j = Integer.toString(tries);
    text2.setText(j);
    }
}
public void send1(View view) {
    n = 1;
    arg();

}
public void send2(View view) {
    n = 2;
    arg();
}
public void send3(View view) {
    n = 3;
    arg();

}
public void send4(View view) {
    n = 4;
    arg();

}
public void send5(View view) {
    n = 5;
    arg();

}
public void send6(View view) {
    n = 6;
    arg();

}
public void send7(View view) {
    n = 7;
    arg();

}
public void send8(View view) {
    n = 8;
    arg();

}
public void send9(View view) {
    n = 1;
    arg();

}

}

游戏胜于布局：

<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"
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=".MainActivity" >

<TextView
    android:id="@+id/gameOver"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="42dp"
    android:text="Game Over!"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<TextView
    android:id="@+id/scoreFinalText"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/scoreInfo"
    android:layout_centerHorizontal="true"
    android:text="0"
    android:textAppearance="?android:attr/textAppearanceLarge" />

<TextView
    android:id="@+id/scoreInfo"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/gameOver"
    android:layout_below="@+id/gameOver"
    android:layout_marginTop="17dp"
    android:text="Your score was:"
    android:textAppearance="?android:attr/textAppearanceSmall" />

<Button
    android:id="@+id/tryAgainButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/scoreInfo"
    android:layout_below="@+id/scoreFinalText"
    android:layout_marginTop="92dp"
    android:text="Try Again?" />

</RelativeLayout>

---

正如tgrll在评论中提到的，您必须在布局中添加方法

tryAgainButton

作为onclick Listener，否则，如果不以编程方式添加onclick方法，将不会发生任何事情：

android:onClick=“tryAgainButton”

这里没有clicklistener！你能把游戏的布局放在这里吗？您是否已将tryAgainButton方法连接到正确的按钮？添加了GameOver布局~我完全错过了这一步，现在它可以切换回重置活动。然而，我仍然不知道为什么intent值没有正确地结转try

int scoreFinal=intent.getExtras（）.getInt（“scoreFinal”）
<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"
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=".MainActivity" >

<TextView
    android:id="@+id/gameOver"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="42dp"
    android:text="Game Over!"
    android:textAppearance="?android:attr/textAppearanceMedium" />

<TextView
    android:id="@+id/scoreFinalText"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/scoreInfo"
    android:layout_centerHorizontal="true"
    android:text="0"
    android:textAppearance="?android:attr/textAppearanceLarge" />

<TextView
    android:id="@+id/scoreInfo"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/gameOver"
    android:layout_below="@+id/gameOver"
    android:layout_marginTop="17dp"
    android:text="Your score was:"
    android:textAppearance="?android:attr/textAppearanceSmall" />

<Button
    android:id="@+id/tryAgainButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/scoreInfo"
    android:layout_below="@+id/scoreFinalText"
    android:layout_marginTop="92dp"
    android:text="Try Again?" />

</RelativeLayout>

<Button
    android:id="@+id/tryAgainButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/scoreInfo"
    android:layout_below="@+id/scoreFinalText"
    android:layout_marginTop="92dp"
    android:text="Try Again?" 
    android:onClick="tryAgainButton" />