Java 移动到其他活动时使用意图时出错

因此，我想使用

check（）

函数中的

Intent

（从

ClassicMode

类到

Person

类）移动到一个新类。我创建了一个新类，但是当我到达

startActivity（intent）

行时，我得到了一个错误，但我不知道为什么

我用

Log.d

试图找到问题，但运气不好。我希望你能帮助我。我会把堆栈跟踪放在下面，谢谢

ClassicMode.java

public class ClassicMode extends Activity implements AnimationListener{//מהמשחק עצמו

String pic;//תמונה של הדגל
Button answer1;//תשובות
Button answer2;
Button answer3;
Button answer4;
Button hint;
TextView guess;
TextView numOfGuess;
TextView score;
TextView scorenum;
MediaPlayer mpHint;
MediaPlayer mpNext;
MediaPlayer mpWrong;
Animation animationfadein;
Animation animationfadeout;
String fn;
Guesses G;
Score s;
Button [] b = new Button[4];
DatabaseHandler db = new DatabaseHandler(this);
List<String>WrongAnswers=new ArrayList<String>();

@SuppressLint("NewApi")
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_second);

    ActionBar actionBar = getActionBar();
    actionBar.setDisplayHomeAsUpEnabled(true);
    score =(TextView)findViewById(R.id.score);
    scorenum =(TextView)findViewById(R.id.scorenum);
    scorenum.setText(String.valueOf(s.score));
    guess =(TextView)findViewById(R.id.guesses);
    numOfGuess=(TextView)findViewById(R.id.numOfGuesses);
    numOfGuess.setText(String.valueOf(Guesses.numOfGuesses));
    hint =(Button)findViewById(R.id.hint);
    hint.setOnClickListener(hintOnClickListener);
    mpHint = MediaPlayer.create(this,R.raw.hint_sound);
    mpNext = MediaPlayer.create(this, R.raw.next_flag);
    mpWrong = MediaPlayer.create(this, R.raw.wrong_answer);
    animationfadein = AnimationUtils.loadAnimation(this, R.anim.fade_in);
    animationfadeout = AnimationUtils.loadAnimation(this, R.anim.fade_out);

    Flags f = new Flags();
    Random r = new Random();//הדגל שיבחר לשאלה
    int num = r.nextInt(160);//Up

    f = db.getFlag(num);//הצגת הדגל הרנדומלי שיצא
    fn = f.getName().toString();
    pic = f.getImage().toString();
    pic_view(pic);//מעבר לפונקציה להשמת התמונה של הדגל במשחק

    //מערך ארבע כפתורים כנגד ארבע תשובות

    b[0] = (Button)findViewById(R.id.button1);
    b[1] = (Button)findViewById(R.id.button2);
    b[2] = (Button)findViewById(R.id.button3);
    b[3] = (Button)findViewById(R.id.button4);

    List<String>Answers=new ArrayList<String>();//מערך תשובות

    Answers.add(f.getName().toString());//הוספת התשובה הנכונה
    for(int i=1;i<4;i++)
    {
        num = r.nextInt(200);
        String valToAdd1 = db.getFlag(num).getName().toString();
        if(!Answers.contains(valToAdd1)){
            WrongAnswers.add(valToAdd1);
            Answers.add(valToAdd1);
        }

    }

    /*num = r.nextInt(30);
    Answers.add(db.getFlag(num).getName().toString());//הוספת 3 תשובות רנדומליות
    num = r.nextInt(30);
    Answers.add(db.getFlag(num).getName().toString());
    num = r.nextInt(30);
    Answers.add(db.getFlag(num).getName().toString());*/

    Collections.shuffle(Answers);//ערבוב התשובות

    for(int i=0;i<Answers.size();i++)
    {
        b[i].setText(Answers.get(i));//השמת התשובות מהמהערך למערך הכפתורים
        b[i].startAnimation(animationfadein);
    }
}//end of OnCreat


public boolean onOptionsItemSelected(MenuItem item){//actionbar activity
    Intent myIntent = new Intent(getApplicationContext(), MainActivity.class);
    startActivityForResult(myIntent, 0);
    return true;
}

@SuppressLint("NewApi")
public void resetQuiz()
{
    recreate();
}

private OnClickListener hintOnClickListener = new OnClickListener() {

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        mpHint.start();
        if(Guesses.numOfGuesses==1)
        {
            G.setNumOfGuesses(3);
            finish();//כאשר מספר הניחושים
            return;
        }
        else
            G.numOfGuesses--;

        int invisblecount=0;
        for(int i=0;i<b.length;i++){
            if(invisblecount<2){
                String buttonText = b[i].getText().toString();  
                if(buttonText.equals(WrongAnswers.get(0))||buttonText.equals(WrongAnswers.get(1)))
                {
                    b[i].startAnimation(animationfadeout);
                    b[i].setVisibility(View.INVISIBLE);
                    invisblecount++;
                }
            }
        }
    }
};

public void check(View v)
{
    Log.d("yes", fn);
    Button b = (Button)v;
    String text = b.getText().toString();
    if(text.equals(fn))
    {
        mpNext.start();
        s.score+=5;
        resetQuiz();
    }
    else
    {
        mpWrong.start();
        if(Guesses.numOfGuesses==1)
        {
            Log.d("kkk", "inside if");
            G.setNumOfGuesses(3);
            //finish();//כאשר מספר הניחושים
            Intent person = new Intent(ClassicMode.this,Person.class);
            String extra = scorenum.getText().toString();
            Log.d("lll", "Get Extra");
            person.putExtra("Score", extra);
            Log.d("sss", "new activ");
            startActivity(person);
            Log.d("dasdas", "inside Activ");
            Toast toast = Toast.makeText(getApplicationContext(), "No more guesses :( Lets see what you made so far...", Toast.LENGTH_SHORT);
            toast.show();
            /*Intent person = new Intent(ClassicMode.this,Person.class);
            String extra = scorenum.getText().toString();
            person.putExtra("Score",extra);
            startActivity(person);
            Log.d("kkk", "inside person");*/
            //return;
        }
        Guesses.numOfGuesses--;
        if(s.score>0)
            s.score-=5;
        scorenum.setText(String.valueOf(s.score));
        numOfGuess.setText(String.valueOf(Guesses.numOfGuesses));
    }

}

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

private void pic_view(String pic2) {
    // TODO Auto-generated method stub
    //גישה לדגל לפי שמו וייבוא התמונה
    Log.d("Result from pic function " , pic2);
    ImageView imageView = (ImageView)findViewById(R.id.imageView1);
    String uri ="@drawable/";
    uri += pic2;    
    int imageResource = getResources().getIdentifier(uri, pic2, getPackageName());//הצוות התמונה 
    Drawable res= getResources().getDrawable(imageResource);//ציור התמונה
    imageView.setImageDrawable(res);
}


@Override
public void onAnimationEnd(Animation animation) {
    // TODO Auto-generated method stub
    Toast.makeText(getBaseContext(), "Animatoin Stoped", Toast.LENGTH_SHORT).show();
}


@Override
public void onAnimationRepeat(Animation animation) {
    // TODO Auto-generated method stub

}


@Override
public void onAnimationStart(Animation animation) {
    // TODO Auto-generated method stub

}

}

public class Person extends Activity{

EditText name;
Button ok;
TextView enter;
String score;
Map<String,String>Names=new HashMap<String,String>();

@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_person);

    Intent intent = getIntent();
    score = intent.getStringExtra(score);
    name =(EditText)findViewById(R.id.namep);
    ok =(Button)findViewById(R.id.send);
    enter =(TextView)findViewById(R.id.entername);

    ok.setOnClickListener(SendActionListener);
}

private OnClickListener SendActionListener =  new OnClickListener() {

    @Override
    public void onClick(View arg0) {
        // TODO Auto-generated method stub
        Names.put(name.getText().toString(),score);
    }
};
}

---

您的意图没有在清单文件中声明。

最可能的问题是

活动

没有在

AndroidManifest.xml

中声明。你的错误是：

您是否在AndroidManifest.xml中声明了此活动

你应该先这样做

---

从现在开始，如何做：

将其放入应用程序元素中，如下所示：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="your.package.name">
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".Activity1" android:label="@string/app_name"></activity>
        <activity android:name=".Activity2"></activity>
    </application>
    <uses-sdk android:minSdkVersion="4" />
</manifest>

其中

.Activity2

是您的第二项活动

---

您是否在AndroidManifest.xml中声明了此活动？忘了问题解决了工作太多hh我没找那个lol谢谢2工作顺利吗谢谢

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="your.package.name">
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".Activity1" android:label="@string/app_name"></activity>
        <activity android:name=".Activity2"></activity>
    </application>
    <uses-sdk android:minSdkVersion="4" />
</manifest>