Save and show an image in android studio -

-

i want know how can save , show image in image view.

my app have 2 buttons , depending on wich button pressed image view image. want save image , when open app again choosen image still there.

the way know save shared preferences in case doesnt work.

someone can my? thank

this code:

public class mainactivity extends appcompatactivity {  imageview imagen; button boton;  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);      imagen = (imageview) findviewbyid(r.id.imagen);     boton = (button) findviewbyid(r.id.boton);      sharedpreferences preferences= getsharedpreferences("preferencias", mode_private);     string imagen= preferences.getstring("imagen", null); }  public void boton1(view view){      imagen.setimageresource(r.drawable.imagen1);      sharedpreferences preferences = getsharedpreferences("preferencias", context.mode_private);     sharedpreferences.editor editor = preferences.edit();     editor.putstring("imagen", imagen.getresources().tostring());     editor.apply(); }  public void boton2(view view){      imagen.setimageresource(r.drawable.imagen2);      sharedpreferences preferences = getsharedpreferences("preferencias", context.mode_private);     sharedpreferences.editor editor = preferences.edit();     editor.putstring("imagen", imagen.getresources().tostring());     editor.apply(); }

}

you save uri in string format of drawable in shared preference. (rename yourimagename drawable name) : 

uri imageuri = uri.parse("android.resource://"+context.getpackagename()+"/drawable/yourimagename"); string uri_tostring = imageuri.tostring();    sharedpreferences preferences = getsharedpreferences("preferencias", context.mode_private); sharedpreferences.editor editor = preferences.edit(); editor.putstring("imageuri", uri_tostring); editor.apply();

in mainactivity, in onresume set image source of imageview : 

sharedpreferences preferences = getsharedpreferences("preferencias", context.mode_private); string imageuri = preferences.getstring("imageuri",null);  if (imageuri != null) {    uri uri = uri.parse(imageuri);    yourimageview.setimageuri(uri); }

Comments

Post a Comment

Popular posts from this blog

php - How to display all orders for a single product showing the most recent first? Woocommerce -

-
i have password protected page on frontend. on page, want display full list of purchases associated single woocommerce product id. option 1: i've looked through woocommerce docs , , found: wc_cli_order , list_( $args, $assoc_args ) function lists orders. presumably, orders can filtered product id [--=] filter orders based on order property. line item fields (numeric array, started index zero): line_items.0.product_id option 2: i found article , based on customer id. i've modified code based on guesses meta_key , meta_value. $customer_orders = get_posts( array( 'numberposts' => -1, 'meta_key' => '_product', 'meta_value' => get_product_id(), 'post_type' => wc_get_order_types(), 'post_status' => array_keys( wc_get_order_statuses() ), ) ); how display orders single product showing recent order first? here solution put based on these articles: http://www.w...
Read more

asp.net - How to correctly use QUERY_STRING in ISAPI rewrite? -

-
i'm having difficult time , hope guys can help. using helicon isapi rewrite version 3.1.0.104 on our iis server. edit http.conf file , have tried , still fail. this trying do: redirect url: https://www.domain.com/switch-by-version?version=2.8.5.2594 to: https://test.domain.com/load/load.aspx?tver=2.8.5.2594 the version number @ end source url change, , need target url have same version number @ end of url example above shows. i tried following not work: rewritecond %{query_string} ^version=(\d\d?)\.(\d\d?)\.(\d\d?)\.(.*)$ [nc] rewriterule ^/switch-by-version(.*)$ https://test.domain.com/load/load.aspx?tver=%1 [r=307,nc,l] any appreciated! thanks. if it's running in equivalent context of .htaccess , rule shouldn't start / . here's simpler version: rewritecond %{query_string} ^version=(\d+\.\d+\.\d+(?:\..+)?)$ [nc] rewriterule ^switch-by-version/?$ https://test.domain.com/load/load.aspx?tver=%1 [r=307,nc,l]
Read more

angularjs - How restrict admin panel using in backend laravel and admin panel on angular? -

-
https://scotch.io/tutorials/token-based-authentication-for-angularjs-and-laravel-apps following tutorials, try write authentication restrict admin panel, didn't understood how can that. this admin panel, admin panel don't want show , request database unauthenticated users. my laravel-routes route::get('/admin',function(){ return view('index'); }); route::get('/api/v1/employees/{id?}', 'employees@index'); route::get('/api/v1/users/{id?}', 'employees@users'); route::post('/api/v1/employees', 'employees@store'); route::post('/api/v1/employees/{id}', 'employees@update'); route::delete('/api/v1/employees/{id}', 'employees@destroy'); route::group(['prefix' => 'api'], function() { route::resource('authenticate', 'authenticatecontroller', ['only' => ['index']]); route::post('authenticate', 'authentic...
Read more