Question

我可以将我的数组数据从一个活动转移到另一个活动，但不是我的字符串数据，我不知道为什么。这是我的主要活动：

protected void onClickCityBreak(View v) {
    persons = (EditText) findViewById(R.id.txtPerson);
    days = (EditText) findViewById(R.id.txtDays);
    String p = persons.toString();
    String d = days.toString();
    String [] arrayCityBreak = getResources().getStringArray(R.array.citybreak);
    Intent myintent = new Intent(MainActivity.this, TripActivity.class);
    myintent.putExtra("PERSONS", p);
    myintent.putExtra("DAYS", d);
    myintent.putExtra("PLACES",arrayCityBreak);
    startActivity(myintent);
}

这是我发送给我的其他活动：

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

    String person = getIntent().getStringExtra("PERSONS");
    String day = getIntent().getStringExtra("DAYS");

    TextView txtPerson = (TextView) findViewById(R.id.txtViewPersons);
    txtPerson.setText("Persons travelling: " + person);
    TextView txtDay = (TextView) findViewById(R.id.txtViewDays);
    txtDay.setText("Days of traveling: " + day);

    String[] arrayCityBreak = getIntent().getStringArrayExtra("PLACES");
    ArrayAdapter<String> adapterCityBreak = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, arrayCityBreak);
    ListView myview = (ListView) findViewById(R.id.lstView);
    myview.setAdapter(adapterCityBreak);
}

我在应用程序中的TextView上得到了这个：

android.support.v7.widget.AppCompactEditText{13e7726VFED...CL. ........563,56....#7f0c0059 app:id/txtDays\

txtPerson也一样。我也尝试过使用Bundle

Answer 1

获取EditText的内容应该以这种方式完成：

 String p = persons.getText().toString();
 String d = days.getText().toString();

Answer 2

此外，如果您对putExtra有其他问题，可以执行以下操作：

MainActivity ：

protected void onClickCityBreak(View v) {
    persons = (EditText) findViewById(R.id.txtPerson);
    days = (EditText) findViewById(R.id.txtDays);
    String p = persons.getText().toString();
    String d = days.getText().toString();
    String [] arrayCityBreak = getResources().getStringArray(R.array.citybreak);
    Intent myintent = new Intent(MainActivity.this, TripActivity.class);
    AnotherActivityClass secondactivity = new AnotherActivityClass();
    secondactivity.persons = p;
    secondactivity.days = d;
    secondactivity.places = arrayCityBreak;    
    startActivity(myintent);
}

创建公共字符串人员和日期，也在SecondActivity中创建公共String []：

public String days;
public String persons;
public String [] places;

然后在 SecondActivity 中使用此值：

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

    TextView txtPerson = (TextView) findViewById(R.id.txtViewPersons);
    txtPerson.setText("Persons travelling: " + person);
    TextView txtDay = (TextView) findViewById(R.id.txtViewDays);
    txtDay.setText("Days of traveling: " + day);

    ArrayAdapter<String> adapterCityBreak = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, arrayCityBreak);
    ListView myview = (ListView) findViewById(R.id.lstView);
    myview.setAdapter(adapterCityBreak);
}

在从另一个活动获取数据时苦苦挣扎

2 个答案: