I am new to Android. How should I pass a String array between two classes?
I tried Intent, by sharing String array between the class, but I get only one String, the rest of the Strings will not displayed.
Can I use a Bundle? Is there some better way to pass a String array?
If you are trying to send a String-array from one Activity to another this can be done in the Intent.
In ClassA:
Intent intent = new Intent(this, ClassB);
String[] myStrings = new String[] {"test", "test2"};
intent.putExtra("strings", myStrings);
startActivity(intent);
In ClassB:
public void onCreate() {
Intent intent = getIntent();
String[] myStrings = intent.getStringArrayExtra("strings");
}
I suggest you to make get_array of set_array function in the class it is very simple I hope you already know this.
//Right in A... Class
String array[]=new String[5];
public void set_array(String arg[])
{
array=arg;
}
public String[] get_array()
{
return array;
}
//Right in B.. class for geting a string array
A mAObject=new A();
String classA_array=mAObject.get_array();
If what you want to do is to pass data back and forth between activities, ie from Activity A, start Activity B and pass the string array, you can use the putStringArrayListExtra method when creating the intent:
so in Activity A you would do something like:
Intent intentB = new Intent(this, ActivityB.class);
intentB.putStringArrayListExtra("name", <the array>);
this.startActivity(intentB)
Intent can send serializable data between activities. If you want to send an serializable object, follow behind:
class MyObject implements Serializable{
// ...
}
Intent intent = new Intent();
// myObject needs to be serializable
MyObject myObject = new MyObject();
intent.putExtra("extra", myObject);
startActivity(intent);
ArrayList is serializable, so you can send it by Intent directly.
Intent intent = new Intent();
ArrayList<String> arr = new ArrayList<>;
intent.putExtra("arr", arr);
startActivity(intent);
