I'm new in Android programming. I'm working on an application that have multiple activities. I've created a custom menu with ListView. I would like to put this menu in a base activity to be available in all activities. How should I do this?
Till now, I have something like this:
This is for the button to toggle the menu
menuToggelIcon.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// Hide layouts if VISIBLE
if(menuLayout.getVisibility() == View.VISIBLE)
{
menuLayout.setVisibility(View.GONE);
}
// Show layouts if they're not VISIBLE
else
{
menuLayout.setVisibility(View.VISIBLE);
}
}
});
And this is for the menu
menuListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
String name = menuArray[position];
Context context = getApplicationContext();
switch (name) {
case "CASE1":
Intent case1Intent = new Intent(context, Activity1.class);
startActivity(case1Intent);
break;
case "CASE2":
Intent case2Intent = new Intent(context, Activity2.class);
startActivity(case2Intent);
break;
case "CASE3":
Intent case3Intent = new Intent(context, Activity3.class);
startActivity(case3Intent);
break;
case "CASE4":
Intent case4Intent = new Intent(context, Activity4.class);
startActivity(case4Intent);
break;
case "CASE5":
Intent case5Intent = new Intent(context, Activity5.class);
startActivity(case5Intent);
break;
case "CASE6":
Intent case6Intent = new Intent(context, Activity6.class);
startActivity(case6Intent);
break;
case "CASE7":
Intent case7Intent = new Intent(context, Activity7.class);
startActivity(case7Intent);
break;
default:
break;
}
}
});
Android custom menu
make one BaseActivity class and all activity extends by BasyActivity class.
BaseActivity class define your main things that show all the screen like menu and other thing. for example
public class BaseActivity extends AppCompatActivity {
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.manu_file_name, menu);
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.icon) {
Toast.makeText(getApplicationContext(), "Hello World", 0).show();
}
return super.onOptionsItemSelected(item);
}
}
and this activity extends all other activity.
Related
I am a beginner, I am a few days with this problem
I didn't find a solution. I have a menu that appears in an activity and when I click, I want it to open a new activity.
My question is, what to put in the activity with menu, and what to put in the new activity?
This is my code
Menu_chat.xml (my menu)
android:id="#+id/salva_vida"
android:icon="#drawable/salva_vida"
android:title="#string/save_life"
app:showAsAction="always" />
ChatActivity.java (this is the activity with menu)
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
switch (id) {
case android.R.id.home:
onBackPressed();
return true;
case R.id.salva_vida:
??????? (What put here?)------------------
break;
tab2.java (this is the new activity- I want to open this)
public class tab2 extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_tab2);
}
}
Intent mIntent = new Intent(this, tab2.class);
startActivity(mIntent);
Your ChatActivity.java will look like this :
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
switch (id) {
case android.R.id.home:
onBackPressed();
return true;
case R.id.salva_vida:
//Start Activity here
Intent mIntent = new Intent(this, tab2.class);
startActivity(mIntent);
break;
Intent mIntent = new Intent(this, tab2.class); startActivity(mIntent);
#Override public boolean onOptionsItemSelected(MenuItem item) { int id = item.getItemId(); switch (id) { case android.R.id.home: onBackPressed(); return true; case R.id.salva_vida: //Start Activity here Intent mIntent = new Intent(this, tab2.class); startActivity(mIntent); break;
Don't forget to add your tab2 activity to manifest.
I am new to Android Development And I am trying to create an application with bottomNavigationView. I have created a separate class to setup the bottomNavigationView for different activities so that I don't have to write the code again and Again. But when I launch the app in an Android device it is starting the Welcome activity again no matter what item I click it start Welcome activity. This is my navigationHelperClass
public class BottomNavigationViewHelper {
private static final String TAG = "BottomNavigationViewHel";
public static void setUpNavigationView(BottomNavigationViewEx bottomNavigationViewEx){
Log.d(TAG, "setUpNavigationView: setting BottomNavigation");
bottomNavigationViewEx.enableAnimation(false);
bottomNavigationViewEx.enableItemShiftingMode(false);
bottomNavigationViewEx.enableShiftingMode(false);
bottomNavigationViewEx.setTextVisibility(false);
}
public static void enableNavigation(final Context context, final BottomNavigationViewEx viewEx){
viewEx.setOnNavigationItemSelectedListener(new BottomNavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem item) {
switch(item.getItemId()){
case R.id.btnHome:
viewEx.setSelectedItemId(R.id.btnHome);
Intent intent = new Intent(context, Welcome.class);
context.startActivity(intent);
break;
case R.id.btnSearch:
Intent intent1 = new Intent(context, Chats.class);
context.startActivity(intent1);
break;
case R.id.btnPost:
Intent intent2 = new Intent(context, Posts.class);
context.startActivity(intent2);
break;
case R.id.btnFavourites:
Intent intent3 = new Intent(context, Favourites.class);
context.startActivity(intent3);
break;
case R.id.btnProfile:
Intent intent4 = new Intent(context, Profile.class);
context.startActivity(intent4);
break;
}
return false;
}
});
}
}
This is my Welcome activity which starts when I click any of the item of bottomNavigationView.
public class Welcome extends AppCompatActivity {
private Context mCntext = Welcome.this;
private static final String TAG = "Welcome";
BottomNavigationViewEx bottomNav;
#Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_welcome);
Log.d(TAG, "onCreate: starting");
setupBottomNavigationView();
Menu menu = bottomNav.getMenu();
MenuItem menuItem = menu.getItem(0);
menuItem.setChecked(true);
private void setupBottomNavigationView(){
Log.d(TAG, "setupBottomNavigationView: setting bottomnavigationview");
bottomNav = findViewById(R.id.nav_bottom);
BottomNavigationViewHelper.setUpNavigationView(bottomNav);
BottomNavigationViewHelper.enableNavigation(mCntext, bottomNav);
}
}
This is one of the activities that I have and the code is same for the rest of activities too . This is Profile activitity.
public class Profile extends AppCompatActivity {
private Context mContext = Profile.this;
private static final String TAG = "Search";
BottomNavigationViewEx bottomNav;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_profile);
setupBottomNavigationView();
}
private void setupBottomNavigationView(){
Log.d(TAG, "setupBottomNavigationView: setting bottomnavigationview");
bottomNav = findViewById(R.id.nav_bottom);
BottomNavigationViewHelper.setUpNavigationView(bottomNav);
BottomNavigationViewHelper.enableNavigation(mContext, bottomNav);
Menu menu = bottomNav.getMenu();
MenuItem menuItem = menu.getItem(4);
menuItem.setChecked(true);
}
#Override
public void setTitle(CharSequence title) {
}
}
Remove following line:
viewEx.setSelectedItemId(R.id.btnHome);
from case case R.id.btnHome: under onNavigationItemSelected callback.
Do not use bottom navigation with activities instead use Fragments. Create a parent activity which will hold your fragments and then change the fragments in onNavigationItemSelectListener in that case you don't have to manage bottom navigation states and selected item. you can check here how to change fragments How to change fragment with the Bottom Navigation Activity?
I have an activity that can be asked to run after clicking buttons on many different activities and hence it does not have a "single parent". Therefore in the android manifest I cannot define its parent so I cant get the "Up" button to function properly.
Is there a way I can have the "up" button return to the activity that called it?
You can pass ComponentName of starting activity as an extra
intent = new Intent(this, UpButtonActivity.class);
intent.putExtra(EXTRA_PARENT_COMPONENT_NAME, new ComponentName(this, ThisActivity.class));
startActivity(intent);
The Activity with up button
private ComponentName parent;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
parent = getIntent().getParcelable(EXTRA_PARENT_COMPONENT_NAME);
}
#Override
public boolean onMenuItemSelected(int featureId, MenuItem item) {
switch (item.getId()) {
case android.R.id.home:
if (parent != null) {
final Intent parentIntent = new Intent();
parentIntent.setComponentName(parent);
startActivity(parentIntent);
finish();
return true;
} else {
return super.onMenuItemSelected(featureId, item);
}
//...
}
}
I have one MainActivity and I have defined below code in onCreate() method. The intention is, when MainActivity gets extra String "EXIT" then show Toast message:
Intent current = getIntent();
if (current !=null && current.getStringExtra("EXIT") != null) {
Toast.makeText(this, "exiting", Toast.LENGTH_LONG).show();
}
This MainActivity starts another activity "DayOne" on some button press like:
public void processGo(View v){
Intent i = new Intent(MainActivity.this,DayOne.class);
i.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
MainActivity.this.startActivity(i);
}
Now I am returning back from "DayOne" to MainActivity after putting extra string "EXIT". This I am doing inside onOptionsItemSelected(MenuItem item) method:
public boolean onOptionsItemSelected(MenuItem item){
if(item.getTitle().equals("Exit")){
Intent i = new Intent(DayOne.this,MainActivity.class);
i.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
i.putExtra("EXIT", "EXIT");
startActivity(i);
finish();
}
return super.onOptionsItemSelected(item);
}
The issue is, when MainActivity is getting called from DayOne with extra string "EXIT"; I am not seeing the Toast message defined in MainActivity. What is missing or wrong here?
Appreciate any help.
Thanks all for your comments and helps.
I have figured out the issue here. It was because the manifest file had entry an entry android:launchMode="singleInstance" for Both the activities (MainActivity and DayOne Activity)..
Removing it from there, it worked fine.
First check your null then get the Intent String, can you just make your code look like below within in onCreate of MainActivity#
Bundle extra= getIntent().getExtras();
if(extra!=null){
String _StrExit=extra.getString("EXIT");
if(_StrExit.equalsIgnoreCase("EXIT")){
Toast.makeText(this, "exiting", Toast.LENGTH_LONG).show();
}
}
Update
Make change while calling Intent from menuitem
public boolean onOptionsItemSelected(MenuItem item){
if(item.getTitle().equals("Exit")){
Intent i = new Intent(DayOne.this,MainActivity.class);
i.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
String _Str="EXIT";
i.putExtra("EXIT", _Str);
startActivity(i);
finish();
}
return super.onOptionsItemSelected(item);
}
Its working for me.
MainActivity:
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Intent current = getIntent();
if (current != null && current.getStringExtra("EXIT") != null) {
Toast.makeText(this, "exiting", Toast.LENGTH_LONG).show();
}
}
public void processGo(View view) {
Intent i = new Intent(MainActivity.this, OneDayActivity.class);
i.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(i);
}
}
OneDayActivity:
public class OneDayActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_day_one);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.day_one, menu);
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getTitle().equals("Exit")) {
Intent i = new Intent(this, MainActivity.class);
i.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
i.putExtra("EXIT", "EXIT");
startActivity(i);
finish();
}
return super.onOptionsItemSelected(item);
}
}
dont clear the stack instead of if you want to do some task when you come back to your main activity (using "EXIT" string) you can achieve that using onActivityResult also.:
public void processGo(View v){
Intent i = new Intent(MainActivity.this,DayOne.class);
MainActivity.this.startActivity(i,10); // 10 is the id to handle
}
#Override
public void onActivityResult( int requestCode, int resultCode, Intent data )
{
super.onActivityResult( requestCode, resultCode, data );
switch ( requestCode )
{
case ( 10 ): // id that we pass on start activity
{
if ( resultCode == Activity.RESULT_OK )
{
Toast.makeText(this, "exiting"+data.getStringExtra( "EXIT", "" ), Toast.LENGTH_LONG).show();
}
}
break;
}
}
On finish
public boolean onOptionsItemSelected(MenuItem item){
if(item.getTitle().equals("Exit")){
Intent resultIntent = new Intent();
resultIntent.putExtra( "EXIT", "EXIT" );
setResult( Activity.RESULT_OK, resultIntent );
finish();
}
return super.onOptionsItemSelected(item);
}
on finish it will go back to Main Activity and call onActivityResult automatically where you can do your task.
Sorry for the typo hope it will help.
I want to create a button, which closes the current activity. Like a "return" button.
Here are code fragments I tried:
Here is the full .java:
public class OtherApps extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.other_apps);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.otherappsmenu, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch(item.getItemId()) {
case R.id.previous:
finish();
break;
case R.id.home:
Context context = getApplicationContext();
CharSequence text = "Activitys are not closed!";
int duration = Toast.LENGTH_LONG;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
Intent intent = new Intent(this, MainActivity.class);
this.startActivity(intent);
break;
case R.id.exit:
finish();
System.exit(0);
case R.id.help:
String url = "http://www.google.de/";
Intent i = new Intent(Intent.ACTION_VIEW);
i.setData(Uri.parse(url));
startActivity(i);
return true;
default:
return super.onOptionsItemSelected(item);
}
return true;
final Button OtherApps = (Button)findViewById(R.id.previousbutton);
OtherApps.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
finish();
}
});
return true;
}
}
But Eclipse says "the first line is unreachable".
Does anyone know what's the error?
Thanks for help!
If your "first line" is unreachable, then it's more important to know, what the code before these two versions is. It might be, that you have a return statement there or a condition that is always false.
In this case the code for attaching the on-click listeners will never be reached.
p.s.
You have two lines wehre you return from the method what means that the following code is never executed:
switch(item.getItemId()) {
...
default: // here, return if none of the values above matched
return super.onOptionsItemSelected(item);
}
return true; // here, return always
// conclusion: this gets never executed: Eclipse says "line not reachable"
final Button OtherApps = (Button ...
This code should work (the first example should be preferred).
The error you are getting sounds as if you have a return-statement anywhere inside that method BEFORE you have the pasted code. Search for that, it should fix the error.
EDIT:
public class OtherApps extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.other_apps);
final Button OtherApps = (Button) findViewById(R.id.previousbutton);
OtherApps.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
finish();
}
});
}