java如何将数据从以编程方式创建的按钮传递到另一个类？

Question

我目前正在开发一个Android应用程序，在其中我有一个活动，用户可以看到他们当前的所有条纹（这些条纹是通过编程从Android的SQLite数据库访问数据创建的）

然后，我尝试在单击另一个活动时传递此数据，该活动显示所有条纹列表中的单个条纹。我需要传递所有4条信息（条纹名称、条纹类别、开始日期和保留天数），老实说，我不太确定从哪里开始。下面是我到目前为止所做的，虽然我没有收到错误，但它当前正在向EnlargedActivity.java传递null、0或简单的nothing

目前，我的大部分代码都在EnlargedActivity的onResume（）方法中，因为每当单击新按钮时，都必须传入新数据——尽管我不确定这是否是最好的方法，但我对Android编程还是相当陌生。谢谢

AllStreaks.java

 protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_all_streaks);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    prefs = getSharedPreferences("carter.streakly", Context.MODE_PRIVATE);
    editor = prefs.edit();

    db = new DatabaseHelper(this);
    mTableLayout = (TableLayout) findViewById(R.id.all_streak_table);
    Cursor res = db.getAllData();
    if(res.getCount() ==0) {
        //show message
        showMessage("Error", "Nothing found");
        return;
    }

    idList = new ArrayList<>();
    streakList = new ArrayList<>();
    categoryList = new ArrayList<>();
    dateStartedList = new ArrayList<>();
    daysKeptList = new ArrayList<>();
    buttonList = new ArrayList<>();

    int counter = 0;
    //StringBuffer buffer = new StringBuffer();
    while (res.moveToNext()){
        idList.add(res.getString(0));
        //buffer.append("STREAKNAME :"+ res.getString(1)+"\n");
        //buffer.append("STREAKCATEGORY :"+res.getString(2)+"\n");
        //buffer.append("DATESTARTED :"+res.getString(3)+"\n");;
        daysKeptList.add(res.getString(4));
        streakList.add(res.getString(1));
        counter++;
    }

    LinearLayout.LayoutParams btnParams = new LinearLayout.LayoutParams(200, 200);
    btnParams.setMargins(200, 30, 80, 30);

    LinearLayout.LayoutParams tvParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, ActionBar.LayoutParams.WRAP_CONTENT);
    tvParams.setMargins(100, 0, 0, 0);

    i = 0;
    while (i < counter){
        if(i%2==0){
            mTableRow = new TableRow(this);
            mTableLayout.addView(mTableRow);
        }

        ll = new LinearLayout(this);
        ll.setOrientation(LinearLayout.VERTICAL);
        mTableRow.addView(ll);

        btn = new Button(this);
        btn.setText(daysKeptList.get(i));
        btn.setId(i);
        btn.setBackground(getResources().getDrawable(R.drawable.round_button));
        btn.setLayoutParams(btnParams);
        buttonList.add(btn);

        ll.addView(btn);

        tv = new TextView(this);
        tv.setText(streakList.get(i));
        tv.setId(i);
        tv.setGravity(Gravity.CENTER | Gravity.BOTTOM);
        tv.setTextSize(20);
        tv.setLayoutParams(tvParams);
        ll.addView(tv);

        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent = new Intent(AllStreaks.this, EnlargedActivity.class);
                intent.putExtra("enlargeName", streakList.get(i-1));
                startActivity(intent);
            }
        });

        i++;
    }
}

public void showMessage(String title, String message){
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setCancelable(true);
    builder.setTitle(title);
    builder.setMessage(message);
    builder.show();
}
}

EnlargedActivity.java

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_enlarged);

    prefs = getSharedPreferences("carter.streakly", Context.MODE_PRIVATE);
    editor = prefs.edit();

    Toast.makeText(EnlargedActivity.this, streakIconName, Toast.LENGTH_LONG).show();
}

public void onResume(){
    super.onResume();

    db = new DatabaseHelper(this);
    res = db.getAllData();
    if(res.getCount() ==0) {
        //show message
        showMessage("Error", "Nothing found");
        return;
    }

    idList = new ArrayList<>();
    streakList = new ArrayList<>();
    categoryList = new ArrayList<>();
    dateStartedList = new ArrayList<>();
    daysKeptList = new ArrayList<>();

    streakIcon = (TextView)findViewById(R.id.activity_enlarge_icon);
    streakIcon.setGravity(Gravity.CENTER);
    streakIcon.setTextSize(30);

    counter = 0;

    while (res.moveToNext()){
        idList.add(res.getString(0));
        streakList.add(res.getString(1));
        categoryList.add(res.getString(2));
        dateStartedList.add(res.getString(3));
        daysKeptList.add(res.getString(4));

        if (streakList.get(counter) == getIntent().getStringExtra("enlargeName")){
            streakIconName = streakList.get(counter);
            daysKept = Integer.parseInt(daysKeptList.get(counter));
            streakIcon.setText(streakIconName + "\n" + daysKept);
        }

        counter++;
    }
}

public void onPause(){
    super.onPause();

    counter = 0;

    idList.clear();
    streakList.clear();
    categoryList.clear();
    dateStartedList.clear();
    daysKeptList.clear();
}

public void showMessage(String title, String message){
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setCancelable(true);
    builder.setTitle(title);
    builder.setMessage(message);
    builder.show();
}

}