Radim neke primere za Android, i dobijam ovu gresku, nemam pojma o cemu se radi. Na netu sam nasao da ce pomoci ako skinem neke pakete preko SDK Managera, probao sam i nije uspelo.
Naime evo koda, vrlo jednostavno.. imam dve Activity klase, na prvoj stoji dugme koje otvara drugu, na drugoj se unosi ime u tekst polje, zatim klikom na dugme se ta Activity klasa zatvara i podatak se prenosi nazad.
MainActivity.java (prva)
Code:
package com.example.usingactivities;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.Toast;
import android.os.Build;
public class MainActivity extends ActionBarActivity {
int requestCode = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment())
.commit();
}
}
public void btnSetUserInfo_Click(View v){
//Toast.makeText(getBaseContext(), "Hello world!", Toast.LENGTH_SHORT).show();
startActivityForResult(new Intent(this, UserDetails.class), requestCode);
}
public void onActivityResult(int requestCode, int resultCode, Intent data){
if (requestCode == this.requestCode){
if (resultCode == RESULT_OK){
String name = data.getDataString();
EditText txt = (EditText)findViewById(R.id.txtUserInfo);
txt.setText("Welcome back " + name + "!");
}
}
}
@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;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
public PlaceholderFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container, false);
return rootView;
}
}
}
package com.example.usingactivities;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.Toast;
import android.os.Build;
public class MainActivity extends ActionBarActivity {
int requestCode = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.container, new PlaceholderFragment())
.commit();
}
}
public void btnSetUserInfo_Click(View v){
//Toast.makeText(getBaseContext(), "Hello world!", Toast.LENGTH_SHORT).show();
startActivityForResult(new Intent(this, UserDetails.class), requestCode);
}
public void onActivityResult(int requestCode, int resultCode, Intent data){
if (requestCode == this.requestCode){
if (resultCode == RESULT_OK){
String name = data.getDataString();
EditText txt = (EditText)findViewById(R.id.txtUserInfo);
txt.setText("Welcome back " + name + "!");
}
}
}
@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;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
public PlaceholderFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container, false);
return rootView;
}
}
}
evo i druge UserDetails.java
Code:
package com.example.usingactivities;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
public class UserDetails extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_user_details);
}
public void btnSetUserInfo_Click(View v){
EditText txt = (EditText)findViewById(R.id.txtUserInput);
Intent obj = new Intent(this, MainActivity.class);
obj.setData(Uri.parse(txt.getText().toString()));
setResult(RESULT_OK, obj);
finish();
}
}
package com.example.usingactivities;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
public class UserDetails extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_user_details);
}
public void btnSetUserInfo_Click(View v){
EditText txt = (EditText)findViewById(R.id.txtUserInput);
Intent obj = new Intent(this, MainActivity.class);
obj.setData(Uri.parse(txt.getText().toString()));
setResult(RESULT_OK, obj);
finish();
}
}
Svaka pomoc je dobrodosla. Hvala unapred!
Winners never quit, quitters never win.