It might sound simple but I can’t make it working. I have two activities. Which first one is a form, and second one is showing data from a JSON file based on values entered in the first activity.
So I am trying to make a simple version of it. I have a EditText, and a button, so when they press the button, whatever was in the EditText will be in the TextView of the next activity.
Here is my code so far:
Main Activity
static TextView textView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textView = (TextView) findViewById(R.id.editText1);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
public void transferIT(View view){
Intent intent = new Intent(this, Page.class);
startActivity(intent);
}
public static String getText(){
String data = (String) textView.getText();
return data;
}
Main XML
<EditText
android:id="@+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@+id/textView1"
android:layout_centerHorizontal="true"
android:ems="10"
android:hint="Enter Text to transfer" />
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:text="Transfer it"
android:onClick="transferIT" />
Second Activity
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_page);
// Show the Up button in the action bar.
setupActionBar();
TextView enteredValue = (TextView)findViewById(R.id.text);
enteredValue.setText(MainActivity.getText());
}
Second XML
<TextView
android:id="@+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="58dp" />
In this way I made a method for the data of the EditText and in the other activity I call it to get access to it. Currently when I press the button it stops working. So what is your solution for having the data of the form in other activity ?
In first activity you should put extra argument to intent like this:
// I assume Page.class is your second ativity
Intent intent = new Intent(this, Page.class);
intent.putExtra("arg", getText()); // getText() SHOULD NOT be static!!!
startActivity(intent);
Then in second activity you retrive argument like this:
String passedArg = getIntent().getExtras().getString("arg");
enteredValue.setText(passedArg);
It’s also good to store “arg” String in MainActivity as constant and always refer to it in other places.
public static final String ARG_FROM_MAIN = "arg";
Answer:
You need to change
static TextView textView;
textView = (TextView) findViewById(R.id.editText1);
to
EditText ed1;
ed1 = (EditText) findViewById(R.id.editText1);
Coz you have
<EditText
android:id="@+id/editText1" // it is edittext not textview
Then
public void transferIT(View view){
String value = ed1.getText().toString()
Intent intent = new Intent(this, Page.class);
intent.putExtra("key",value);
startActivity(intent);
}
Then in onCreate of second activity
String value = getIntent().getExtras().getString("key");
Answer:
You send the data in the intent when you call the second activity. This is pretty fundamental stuff. I suggest you read up on Intents and Parcelable concepts in Android and Serialization in Java that are all related to your question.
Answer:
we are sending data from one activity to another where first activity is mainActivity and another is otherActivity
for mainActivity
`Intent in = new Intent(this, OtherActivity.class);
in.putExtra("name", etname.getText().toString());
in.putExtra("job", etjob.getText().toString());
in.putExtra("sal", etsal.getText().toString());
startActivity(in);`
for otherActivity
`Intent in = getIntent();
tv.setText(in.getStringExtra("name")+"\n"+in.getStringExtra("job")+" "+in.getStringExtra("sal"));
`
Answer:
We are sending data from MainActivity to another Activity
MainActivity code that is sending data to another activity
public class MainActivity extends AppCompatActivity
{
EditText t1, t2, t3;
Button button;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
t1 = (EditText) findViewById(R.id.edit1);
t2 = (EditText) findViewById(R.id.edit2);
t3 = (EditText) findViewById(R.id.edit3);
button = (Button) findViewById(R.id.move);
button.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
String name = t1.getText().toString();
String email = t2.getText().toString();
String edu = t3.getText().toString();
if (name.equals("") || email.equals("") || edu.equals(""))
{
Toast.makeText(getApplicationContext(), "Fill the form", Toast.LENGTH_LONG).show();
}
else
{
Intent intent = new Intent(MainActivity.this, Main2Activity.class);
intent.putExtra("fname", name);
/*putExtra method take two parameter,first is key and second is value. By using key, we retrieve data
*/
intent.putExtra("femail", email);
intent.putExtra("fedu", edu);
startActivity(intent);
finish();
}
}
});
}
}
Receiving activity code whose name is Main2Activity.java
public class Main2Activity extends AppCompatActivity
{
TextView textView1, textView2, textView3;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
textView1 = (TextView) findViewById(R.id.textView1);
textView2 = (TextView) findViewById(R.id.textView2);
textView3 = (TextView) findViewById(R.id.textView3);
//We create object of Bundle class that help to get data from MainActivity and used its getString method
Bundle bn = getIntent().getExtras();
String name = bn.getString("fname");
String email = bn.getString("femail");
String edu = bn.getString("fedu");
textView1.setText(String.valueOf(name));
textView2.setText(String.valueOf(email));
textView3.setText(String.valueOf(edu));
}
}
Answer:
We can implement this using the beneath possible ways,
- SharedPrefrence
- Instance (getter , setter method)
- Constant method
1. SharedPrefrence
public static final String MyPREFERENCES = "MyPrefs";
// set the sharedprefrence
SharedPreferences sharedpreferences = getActivity().getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedpreferences.edit();
editor.putString("MasterAgilData", RestoreMasterData);
editor.commit();
// restore the sharedprefrence
String RestoreMasterData1 = sharedpreferences.getString("MasterAgilData", "");
2. Instance
public class instance {
public static AgilDataList StoreAgilDataList;
public static AgilDataList getStoremasterDataList() {
return StoreAgilDataList;
}
public static void setStoremasterDataList(AgilDataList storemasterDataList)
{
StoreAgilDataList = storemasterDataList;
}
}
3. Constant method (static variable)
public class First_Activity extends Activity {
public static String USER_FORMATED_NUMBER = null;
USER_FORMATED_NUMBER="Data you want to pass";
}
public class Second_Activity extends Activity {
String data=First_Activity.USER_FORMATED_NUMBER;
}