For my application I used a bouton to logout, but now I would like to use the action bar (When user click on logout icon he goes to homepage) and I can't make them live together.
(I'm french, its hard to code because all tuto are in english. So please be patient with me).
Thank you very much.
My button code was :
btn_logout.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
sessionManager.logout();
Intent intent = new Intent(getApplicationContext(), MainActivity.class);
startActivity(intent);
finish();
}
});
My code where I would like to add icon logout :
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_logout) {
return true;
}
return super.onOptionsItemSelected(item);
}
My XML :
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="#+id/action_logout"
android:icon="#android:drawable/ic_lock_power_off"
android:title="#string/logout"
app:showAsAction="ifRoom" />
</menu>
You need to do something when the user taps the menu item.
if (id == R.id.action_logout) {
logout();
return true;
}
Move your logout code to a method so you can call it from any place:
private void logout() {
sessionManager.logout();
startActivity(new Intent(this, MainActivity.class));
finish();
}
Work good like this. Thank you guys.
#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();
//noinspection SimplifiableIfStatement
if (id == R.id.action_logout) {
sessionManager.logout();
Intent intent = new Intent(getApplicationContext(), MainActivity.class);
startActivity(intent);
finish();
return true;
}
return super.onOptionsItemSelected(item);
}
Related
I would like to add a share button that opens something like this.
I am using this source from the official Android site
I want to send standard text so I thought I should use this part:
Intent sendIntent = new Intent();
sendIntent.setAction(Intent.ACTION_SEND);
sendIntent.putExtra(Intent.EXTRA_TEXT, "This is my text to send.");
sendIntent.setType("text/plain");
Intent shareIntent = Intent.createChooser(sendIntent, null);
startActivity(shareIntent);
But I have no idea where to place the code.
How would I do it if I wanted to place it in 1 of these 3 spots?
I would prefer to have it in the Menu or up top and just remove the button below but I am open to any solution.
To add a click event listener to the FloatingActionButton:
FloatingActionButton fab = findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
share();
}
});
private void share(){
Intent sendIntent = new Intent();
sendIntent.setAction(Intent.ACTION_SEND);
sendIntent.putExtra(Intent.EXTRA_TEXT, "This is my text to send.");
sendIntent.setType("text/plain");
Intent shareIntent = Intent.createChooser(sendIntent, null);
startActivity(shareIntent);
}
To handle a menu item click:
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.yourItemId:
share();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
From your comment : This worked for me. Is there anyway to do this on top of the screen next to the settings button?
You have to create menu directory in resource/res. Then, create a menu. Add following source code to menu.
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item android:id="#+id/share"
android:title="Shar"/>
</menu>
Add following source code to MainActivity
#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) {
int id = item.getItemId();
switch (id){
case R.id.share:
Intent sendIntent = new Intent();
sendIntent.setAction(Intent.ACTION_SEND);
sendIntent.putExtra(Intent.EXTRA_TEXT, "This is my text to send.");
sendIntent.setType("text/plain");
Intent shareIntent = Intent.createChooser(sendIntent, null);
startActivity(shareIntent);
return true;
default:
return super.onOptionsItemSelected(item);
}
}
If you want to trigger this code from your navigation drawer, then you need to override the onNavigationItemSelected method in your calling activity like this
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem item) {
// Handle navigation view item clicks here.
switch (item.getItemId()) {
case R.id.nav_share: {
Intent sendIntent = new Intent();
sendIntent.setAction(Intent.ACTION_SEND);
sendIntent.putExtra(Intent.EXTRA_TEXT, "This is my text to send.");
sendIntent.setType("text/plain");
Intent shareIntent = Intent.createChooser(sendIntent, null);
startActivity(shareIntent);
break;
}
}
//close navigation drawer
mDrawerLayout.closeDrawer(GravityCompat.START);
return true;
}
Identify the ID of the menu item, then place the code accordingly.
I'm working on programming a android application. But as soon as I would like to test my application in my simulator, I get an instant error.
This is my code.
public class MainActivity extends Activity implements View.OnClickListener {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main);
Button toPech = (Button)findViewById(R.id.toPech);
toPech.setOnClickListener(this);
ImageButton toInfo = (ImageButton)findViewById(R.id.toInfo);
toInfo.setOnClickListener(this);
//this button is not in the same layoutactivity as the other 2.
ImageButton backPech = (ImageButton)findViewById(R.id.backPech);
backPech.setOnClickListener(this);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.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();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
#Override
public void onClick(View v) {
switch(v.getId()) {
case R.id.toPech:
startActivity(new Intent(getApplicationContext(), LocationActivity.class));
break;
case R.id.toInfo:
startActivity(new Intent(getApplicationContext(), InfoActivity.class));
break;
case R.id.backPech:
startActivity(new Intent(getApplicationContext(), MainActivity.class));
break;
}
}
I would like to know what is wrong so that I can.
From your commented line:
//this button is not in the same layoutactivity as the other 2.
I think you have a NullPointerException.
While the Button "backPech" isn't in activity_main.xml, so calling findViewById(R.id.backPech); will return a null object ( backPech will be null).
And calling setOnClickListener(this); to a null object will cause the NullPointerException.
I am trying to manually implement the actions that must take place when the up button on the actionbar is pressed but for some reason nothing happens when I press it.
here is my code:
public class ActivityOne extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_activity_one);
Toolbar toolbar = (Toolbar)findViewById(R.id.toolbar_actionbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
Button button = (Button)findViewById(R.id.btn1);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
openActivityTwo();
}
});
Button button2 = (Button)findViewById(R.id.btn2);
button2.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
openActivityThree();
}
});
}
void openActivityTwo(){
Intent intent = new Intent(this, ActivityTwo.class);
startActivity(intent);
}
void openActivityThree(){
Intent intent = new Intent(this, ActivityThree.class);
startActivity(intent);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_activity_one, 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();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
else if(id == R.id.homeAsUp){
Log.i("","Up is pressed");
finish();
return true;
}
return super.onOptionsItemSelected(item);
}
}
I understand that I have to explicitly assign a parent activity for the activity I want to implement up navigation on the manifest file, but problem is that this activity has multiple parents so I thought calling the finish() method when the up button is pressed on this activity will be the better approach.
I have already tried both id == R.id.home and id == R.id.homeAsUp and they both do not work. I do not know if it is because I am using AppCompactActivity or what Please help
Here is how you can implement this, try this code
use android.R.id.home instead of R.id.home or R.id.homeAsUp
public boolean onOptionsItemSelected(final MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
//use onBackPressed() OR finish();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
The correct way to do it is to override public boolean onNavigateUp() just like overriding onBackPressed().
Using android studio 3.6.2 I've found that the Up button is not displayed by default in my apps, but it can be easily added..
Go to AndroidManifest.xml and update each activity that needs an Up button as follows:
<activity
android:name=".yourClassName"
android:parentActivityName=".MainActivity">
<meta-data android:name="android.support.PARENT_ACTIVITY"
android:value="com.example.yourPackageName" />
</activity>
The target destination for the Up button is set by changing parentActivityName. In this example I have set it as '.MainActivity' but you can change that to whatever activity you want the user to navigate to.
In order to have the ActionBar in my application, my main activity extends from android.support.v7.app.ActionBarActivity. This is how it looks:
However, when I click in the overflow action button, the options show up over the ActionBar:
I wanted to show the overflow menu under the ActionBar, as it is supposed to. How can I solve this?
I'm running Android 4.4 (KITKAT). If you need any more details, just ask. Thanks.
Here is the code of my main activity:
public class SendMessageActivity extends ActionBarActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_send_message);
getSupportActionBar().setDisplayShowHomeEnabled(true);
getSupportActionBar().setLogo(R.drawable.ic_action_bar_icon);
getSupportActionBar().setDisplayUseLogoEnabled(true);
if (savedInstanceState == null) {
getSupportFragmentManager().beginTransaction()
.add(R.id.activitySendMessage, new SendMessageFragment())
.commit();
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_activity_send_message, 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();
//noinspection SimplifiableIfStatement
if (id == R.id.actionSettings) {
startActivity(new Intent(this, SettingsActivity.class));
return true;
}
if (id == R.id.actionShowHistory) {
startActivity(new Intent(this, SentMessagesHistoryActivity.class));
return true;
}
return super.onOptionsItemSelected(item);
}
}
At the moment i use this code:
int currentapiVersion = android.os.Build.VERSION.SDK_INT;
if (currentapiVersion >= android.os.Build.VERSION_CODES.HONEYCOMB){
ActionBar actionBar = getActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setHomeButtonEnabled(true);
}
, but now the Button shouldnt be only a back-function. I like to start an other activity:
Intent intent = new Intent(CurrentActivity.this, MainActivity.class);
startActivity(intent);
I know i should use the setOnClickListener, but I don't know where i call the Listener.
Although I agree with Tanis.7x comment, you shouldn't be using that button if it's not to go back by calling finish() or popBackStack(),
the action for the home button is called with the menu options
http://developer.android.com/guide/topics/ui/actionbar.html#Home
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
// app icon in action bar clicked;
return true;
default:
return super.onOptionsItemSelected(item);
}
}