How can I to show all applications which to work with this schema which I pass in intent chooser. For example what I need:
Intent intent = new Intent(Intent.ACTION_SEND);
intent.setData(Uri.parse("google://test"));
intent.setData(Uri.parse("microsoft://test"));
startActivity(Intent.createChooser(intent, "Chooser"));
I think easiest way to do that by such way
int x;
// {set value for x using AlertDialog or whatever you prefer }
Intent intent = new Intent(Intent.ACTION_SEND);
if (x=0){
intent.setData(Uri.parse("google://test"));
} else if(x=1) {
intent.setData(Uri.parse("microsoft://test"));
}
startActivity(Intent.createChooser(intent, "Chooser"));
Related
Im making a quiz game with questions on diferent topics
For Example i have activities for these topics: Flags, Capitals, Population, Economy, Continent, etc.
And i have one single ResultActivity to obtain the Score of the quiz.
The ResultActivity has a PLAY AGAIN button.
On the FlagsActivity i have this code:
Intent intent = new Intent(getApplicationContext(),ResultActivity.class);
intent.putExtra("RIGHT_ANSWER_COUNT", score);
intent.putExtra("NAME_ACTIVITY", "FlagsActivity");
startActivity(intent);
On the CapitalActivity i have this code:
Intent intent = new Intent(getApplicationContext(),ResultActivity.class);
intent.putExtra("RIGHT_ANSWER_COUNT", score);
intent.putExtra("NAME_ACTIVITY", "CapitalActivity");
startActivity(intent);
etc.....
On the ResultActivity i have this code:
activity = getIntent().getStringExtra("NAME_ACTIVITY");
public void playAgain(View view){
if(activity.equals("FlagsActivity")){
Intent intent = new Intent(getApplicationContext(), FlagsActivity.class);
startActivity(intent);
}
if(activity.equals("CapitalActivity")){
Intent intent = new Intent(getApplicationContext(), MainActivity.class);
startActivity(intent);
}
if(activity.equals("PopulationActivity")){
Intent intent = new Intent(getApplicationContext(), PopulationActivity.class);
startActivity(intent);
}
if(activity.equals("EconomyActivity")){
Intent intent = new Intent(getApplicationContext(), EconomyActivity.class);
startActivity(intent);
}
if(activity.equals("ContinentActivity")){
Intent intent = new Intent(getApplicationContext(), ContinentActivity.class);
startActivity(intent);
}
}
Basically im sending an Intent with a String containing the name of the activity, then on the Result Activity evaluating with "if" the String = That activity name, start the activity.
What i want to do is someting like this:
On the Flags Activity:
Intent(getApplicationContext(),ResultActivity.class);
intent.putExtra(FlagsActivity.class);
startActivity(intent);
On the CapitalActivity:
Intent(getApplicationContext(),ResultActivity.class);
intent.putExtra(CapitalActivity.class);
startActivity(intent);
On the Result Activity:
activity = getIntent();
public void playAgain(View view){
Intent intent = new Intent(getApplicationContext(), activity);
startActivity(intent);
}
So that i can create as many quiz activities without having to create an "if" statement on the ResultActivity for it to work.
You can pass the class name as a string and use reflection to look up a class object for that type. Something like this:
Class classToLoad = Class.forName(getIntent().getStringExtra("NAME_ACTIVITY"));
Intent intent = new Intent(getApplicationContext(), classToLoad);
startActivity(intent);
I would pass the fully qualified class name to avoid errors.
You could pass the String of activity name to the Result activity, and get its corresponding class name using reflection:
String strActivity = "com.package.FlagsActivity";
Intent intent = new Intent(getApplicationContext(),ResultActivity.class);
intent.putExtra("activity_name", strActivity );
startActivity(intent);
String activityName = getIntent().getStringExtra("activity_name");
Class<?> myClass = Class.forName(activityName );
Intent myIntent = new Intent(getApplicationContext(), myClass);
Something like this.
In the Results Activity
public static void toActivity(Context context, final Class ActivityToOpen){
//whatever awesome code you would like to perform
Intent intent = new Intent(context, ActivityToOpen);
startActivity(intent);
}
In the originating Activity (Flags Activity for example)
ResultsActivity.toActivity(FlagsActivity.this, FlagActivity.class);
Check for typos... I kinda winged this :)
You should be able to call from any originating Activity without if statement.
When you receive the data
String activity;
Bundle bundle = getIntent().getExtras();
if (bundle != null){
activity = bundle.getString("NAME_ACTIVITY");
}
The problem I am having is that it prints out Null on the second activity and not the actual username that is entered. Is the data being passed to the second activity correctly? Does the second activity need more code? Sorry but not the best at programming.
I have this code in my main class
if (username.getText().toString().equals("batman") &&
password.getText().toString().equals("Joker")) {
Toast.makeText(MainActivity.this, "Username and
password is correct", Toast.LENGTH_SHORT).show();
Intent intent = new Intent("com.example.*******.loginpage.User");
intent.putExtra("username",String.valueOf(username));
startActivity(new Intent(MainActivity.this, User.class));
This is the code inside my second class.
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_user);
Intent intent = getIntent();
String username = getIntent().getStringExtra("username");
TextView textView = (TextView) findViewById(R.id.textView4);
textView.setText("Welcome" + " " + username );
The problem is your intent in your first class
Intent intent = new Intent("com.example.*******.loginpage.User"); <-- have created an intent
intent.putExtra("username",String.valueOf(username));
startActivity(new Intent(MainActivity.this, User.class)); <-- but using new Intent
You have created an intent but you passing new intent. Use your created Intent instead of passing new Intent.
Intent intent = new Intent(MainActivity.this, User.class);
intent.putExtra("username",String.valueOf(username));
startActivity(intent);
EDIT
Instead using String.valueOf(username) you must use username.getText(), because String.valueOf(username) is method to translate your object to String.
Intent intent = new Intent(MainActivity.this, User.class);
intent.putExtra("username",username.getText());
startActivity(intent);
Two problems here.
First one is that you have to pass the intent where you put your extra instead of creating new one to startActivity, like
Intent intent = new Intent(MainActivity.this, User.class);
intent.putExtra("username",username.getText().toString());
startActivity(intent);
Second problem is that username looks like editText, String.valueOf won't pass actual value, use username.getText().toString() like i mentioned in code.
I developed an app that can reverse search by image. I wish user can use image and keyword at the same time to reverse search.
The method getImgurContent() works. It returns image's URL on the internet. But I don't know how to reverse search image with keyword at the same time.
uri = Uri.parse("https://images.google.com/searchbyimage?image_url=" + getImgurContent());
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);
You can try code below:
uri = Uri.parse("https://www.google.com/search?tbm=isch&q=findSomeImage");
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);
Or:
uri = Uri.parse("https://www.google.com/search?tbm=isch&q="+ getImgurContent());
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);
I ask if I can pass to an other application some data using intent. If it's possible, how can I do clicking a button and passing to an other application?
b1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
Intent intention = new Intent(?????);
startActivity(intention);
}
});
To pass data from one activity to another you need to add it to the Intent. E.g,
Intent intention = new Intent(this, DestClass.class);
int value = 10;
intention.putExtra("KEY", value);
startActivity(intention);
and in your DestClass's onCreate(), you get it from the Intent with,
Bundle extras = getIntent().getExtras();
if (extras!= null) {
extras.getInt("KEY");
}
To send it to another application. Similarly you create an Intent as shown in the Android docs.
Intent sendIntent = new Intent();
sendIntent.setAction(Intent.ACTION_SEND);
sendIntent.putExtra(Intent.EXTRA_TEXT, "This is my text to send.");
sendIntent.setType("text/plain");
startActivity(sendIntent);
Note that in this case the Android system allows apps to register to receive Intents and if there are multiple apps that have registered for these Intents then the system lets the user choose which App they would like to handle the Intent.
How am i suppose to use this
android.intent.category.APP_MUSIC
to launch the music player?
it doesn't work if i call makeMainSelectorActivity
Intent intent = new Intent();
intent.makeMainSelectorActivity(intent.ACTION_MAIN,
"android.intent.category.APP_MUSIC");
startActivity(intent);
This solution might help someone looking to launch default Music Player:
if(android.os.Build.VERSION.SDK_INT>=15){
Intent intent=Intent.makeMainSelectorActivity(Intent.ACTION_MAIN,
Intent.CATEGORY_APP_MUSIC);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);//Min SDK 15
startActivity(intent);
}else{
Intent intent = new Intent("android.intent.action.MUSIC_PLAYER");//Min SDK 8
startActivity(intent);
}
Used below code :
Uri uri = Uri.withAppendedPath(MediaStore.Audio.Media.INTERNAL_CONTENT_URI, "1");
Intent it = new Intent(Intent.ACTION_VIEW, uri);
startActivity(it);
or
Intent intent = new Intent("android.intent.action.MUSIC_PLAYER");
startActivity(intent);
Ans also prefer url :
Launching the default music player