Affichage d'une image depuis URL

**Jojo____** · 08/01/2012, 14h03

Bonjour,

Enfaite ma question est toute simple ^^ Comment je fais pour afficher une image et la redimensioner avec java en android à partir de son URL que j'ai dans une variable String.

Merci beaucoup !

**Jojo____** · 09/01/2012, 09h21

J'ai réussi à afficher l'image, il me manque donc plus que le redimensionnement que je ne sais pas faire :s

Voici mon code d'affichage:

Code :

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try {
			  photo = (ImageView)findViewById(R.id.photoActivite);
			  bitmap = BitmapFactory.decodeStream((InputStream)new URL(urlPhoto).getContent());
			  photo.setImageBitmap(bitmap); 
		} catch (MalformedURLException e) {
			  e.printStackTrace();
		} catch (IOException e) {
			  e.printStackTrace();
		}

**Feanorin** · 09/01/2012, 14h41

Bonjour,

Merci de faire une recherche sur le forum

http://www.developpez.net/forums/d11...-taille-image/

**Jojo____** · 10/01/2012, 11h19

Ah effectivement je n'avais pas vu ce post. J'm'en suis donc inspiré pour redimensionner mon image par rapport à la taille de l'écran.

Voici ce que j'ai:

Code :

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private Bitmap resize(Bitmap bm)
	{
 
		//Dimensions de l'image
		float width = bm.getWidth();
		float height = bm.getHeight();
 
		//Dimensions de l'écran
		float screenWidth = getWindowManager().getDefaultDisplay().getWidth();
 
		float rapport= height/width;
		Log.d("Patate0", "width: "+width+" height: "+height+" rapport: "+rapport);
 
		float newWidth = (float) ((9.0/10.0)*screenWidth);
		float newHeight = rapport*newWidth;
		float scaleWidth = newWidth;
		float scaleHeight = newHeight;
 
		//Eviter la pixelisation, on n'augmente pas la taille
		if(newWidth>width){
			newWidth=width;
			newHeight=height;
		}
 
		Log.d("Patate", "width: "+width+" height: "+height+ " newWidth: "+newWidth+" newHeight: "+newHeight+" rapport: "+rapport);
 
		Matrix matrix = new Matrix();
		matrix.postScale(scaleWidth, scaleHeight);
 
		Bitmap resizedBitmap = Bitmap.createBitmap(bm, 0, 0, (int)width, (int)height, matrix, true);
 
		return resizedBitmap;
 
	}

Code :

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		//Affichage de la photo
		try {
			  photo = (ImageView)findViewById(R.id.photoActivite);
			  bitmap = BitmapFactory.decodeStream((InputStream)new URL(urlPhoto).getContent());
 
			  bitmap=resize(bitmap);
 
			  photo.setImageBitmap(bitmap); 
		} catch (MalformedURLException e) {
			  e.printStackTrace();
		} catch (IOException e) {
			  e.printStackTrace();
		}

Au niveau de mon logger j'ai ça:

Code :

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01-10 10:15:26.485: D/Patate0(893): width: 448.0 height: 336.0 rapport: 0.75
01-10 10:15:26.496: D/Patate(893): width: 448.0 height: 336.0 newWidth: 432.0 newHeight: 324.0 rapport: 0.75
01-10 10:15:26.496: D/AndroidRuntime(893): Shutting down VM
01-10 10:15:26.505: W/dalvikvm(893): threadid=3: thread exiting with uncaught exception (group=0x4001b188)
01-10 10:15:26.505: E/AndroidRuntime(893): Uncaught handler: thread main exiting due to uncaught exception
01-10 10:15:26.515: E/AndroidRuntime(893): java.lang.RuntimeException: Unable to start activity ComponentInfo{mpam.base/mpam.base.DetailActActivity}: java.lang.IllegalArgumentException: bitmap size exceeds 32bits
01-10 10:15:26.515: E/AndroidRuntime(893): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2496)
01-10 10:15:26.515: E/AndroidRuntime(893): 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
01-10 10:15:26.515: E/AndroidRuntime(893): 	at android.app.ActivityThread.access$2200(ActivityThread.java:119)
01-10 10:15:26.515: E/AndroidRuntime(893): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
01-10 10:15:26.515: E/AndroidRuntime(893): 	at android.os.Handler.dispatchMessage(Handler.java:99)
01-10 10:15:26.515: E/AndroidRuntime(893): 	at android.os.Looper.loop(Looper.java:123)
01-10 10:15:26.515: E/AndroidRuntime(893): 	at android.app.ActivityThread.main(ActivityThread.java:4363)
01-10 10:15:26.515: E/AndroidRuntime(893): 	at java.lang.reflect.Method.invokeNative(Native Method)
01-10 10:15:26.515: E/AndroidRuntime(893): 	at java.lang.reflect.Method.invoke(Method.java:521)
01-10 10:15:26.515: E/AndroidRuntime(893): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
01-10 10:15:26.515: E/AndroidRuntime(893): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
01-10 10:15:26.515: E/AndroidRuntime(893): 	at dalvik.system.NativeStart.main(Native Method)
01-10 10:15:26.515: E/AndroidRuntime(893): Caused by: java.lang.IllegalArgumentException: bitmap size exceeds 32bits
01-10 10:15:26.515: E/AndroidRuntime(893): 	at android.graphics.Bitmap.nativeCreate(Native Method)
01-10 10:15:26.515: E/AndroidRuntime(893): 	at android.graphics.Bitmap.createBitmap(Bitmap.java:468)
01-10 10:15:26.515: E/AndroidRuntime(893): 	at android.graphics.Bitmap.createBitmap(Bitmap.java:435)
01-10 10:15:26.515: E/AndroidRuntime(893): 	at mpam.base.DetailActActivity.resize(DetailActActivity.java:75)
01-10 10:15:26.515: E/AndroidRuntime(893): 	at mpam.base.DetailActActivity.onCreate(DetailActActivity.java:119)
01-10 10:15:26.515: E/AndroidRuntime(893): 	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
01-10 10:15:26.515: E/AndroidRuntime(893): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2459)
01-10 10:15:26.515: E/AndroidRuntime(893): 	... 11 more
01-10 10:15:26.548: I/dalvikvm(893): threadid=7: reacting to signal 3
01-10 10:15:26.556: I/dalvikvm(893): Wrote stack trace to '/data/anr/traces.txt'
01-10 10:15:29.066: I/Process(893): Sending signal. PID: 893 SIG: 9
01-10 10:15:29.806: D/dalvikvm(901): GC freed 671 objects / 53184 bytes in 112ms
01-10 10:15:30.216: I/System.out(901): Samedi, 14 Janvier 2012
01-10 10:15:30.216: D/GererActiviteParcoursCtrl(901): Entrée dans la méthode get
01-10 10:15:40.878: D/GererActiviteParcoursCtrl(901): Sortie de la méthode get
01-10 10:15:40.946: D/AndroidRuntime(901): Shutting down VM
01-10 10:15:40.946: W/dalvikvm(901): threadid=3: thread exiting with uncaught exception (group=0x4001b188)
01-10 10:15:40.946: E/AndroidRuntime(901): Uncaught handler: thread main exiting due to uncaught exception
01-10 10:15:40.968: E/AndroidRuntime(901): java.lang.RuntimeException: Unable to start activity ComponentInfo{mpam.base/mpam.base.ActiviteJourneeActivity}: java.lang.IllegalArgumentException: Wrong state class -- expecting View State
01-10 10:15:40.968: E/AndroidRuntime(901): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2496)
01-10 10:15:40.968: E/AndroidRuntime(901): 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
01-10 10:15:40.968: E/AndroidRuntime(901): 	at android.app.ActivityThread.access$2200(ActivityThread.java:119)
01-10 10:15:40.968: E/AndroidRuntime(901): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
01-10 10:15:40.968: E/AndroidRuntime(901): 	at android.os.Handler.dispatchMessage(Handler.java:99)
01-10 10:15:40.968: E/AndroidRuntime(901): 	at android.os.Looper.loop(Looper.java:123)
01-10 10:15:40.968: E/AndroidRuntime(901): 	at android.app.ActivityThread.main(ActivityThread.java:4363)
01-10 10:15:40.968: E/AndroidRuntime(901): 	at java.lang.reflect.Method.invokeNative(Native Method)
01-10 10:15:40.968: E/AndroidRuntime(901): 	at java.lang.reflect.Method.invoke(Method.java:521)
01-10 10:15:40.968: E/AndroidRuntime(901): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
01-10 10:15:40.968: E/AndroidRuntime(901): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
01-10 10:15:40.968: E/AndroidRuntime(901): 	at dalvik.system.NativeStart.main(Native Method)
01-10 10:15:40.968: E/AndroidRuntime(901): Caused by: java.lang.IllegalArgumentException: Wrong state class -- expecting View State
01-10 10:15:40.968: E/AndroidRuntime(901): 	at android.view.View.onRestoreInstanceState(View.java:5964)
01-10 10:15:40.968: E/AndroidRuntime(901): 	at android.widget.TextView.onRestoreInstanceState(TextView.java:2418)
01-10 10:15:40.968: E/AndroidRuntime(901): 	at android.view.View.dispatchRestoreInstanceState(View.java:5940)
01-10 10:15:40.968: E/AndroidRuntime(901): 	at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:1127)
01-10 10:15:40.968: E/AndroidRuntime(901): 	at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:1127)
01-10 10:15:40.968: E/AndroidRuntime(901): 	at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:1127)
01-10 10:15:40.968: E/AndroidRuntime(901): 	at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:1127)
01-10 10:15:40.968: E/AndroidRuntime(901): 	at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:1127)
01-10 10:15:40.968: E/AndroidRuntime(901): 	at android.view.View.restoreHierarchyState(View.java:5919)
01-10 10:15:40.968: E/AndroidRuntime(901): 	at com.android.internal.policy.impl.PhoneWindow.restoreHierarchyState(PhoneWindow.java:1454)
01-10 10:15:40.968: E/AndroidRuntime(901): 	at android.app.Activity.onRestoreInstanceState(Activity.java:835)
01-10 10:15:40.968: E/AndroidRuntime(901): 	at android.app.Activity.performRestoreInstanceState(Activity.java:807)
01-10 10:15:40.968: E/AndroidRuntime(901): 	at android.app.Instrumentation.callActivityOnRestoreInstanceState(Instrumentation.java:1096)
01-10 10:15:40.968: E/AndroidRuntime(901): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2473)
01-10 10:15:40.968: E/AndroidRuntime(901): 	... 11 more
01-10 10:15:40.996: I/dalvikvm(901): threadid=7: reacting to signal 3
01-10 10:15:41.026: I/dalvikvm(901): Wrote stack trace to '/data/anr/traces.txt'
01-10 10:20:41.016: I/Process(901): Sending signal. PID: 901 SIG: 9
01-10 10:20:41.876: D/dalvikvm(907): GC freed 698 objects / 54184 bytes in 105ms

Donc la taille du bitmap qui est supérieur à 32bits. Je sais pas pourquoi sachant que la nouvelle taille de l'image est inférieure à l'ancienne...

Merci beaucoup, toute aide est la bienvenue ^^

**Feanorin** · 10/01/2012, 16h06

Bonjour,

Code :

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float newWidth = (float) ((9.0/10.0)*screenWidth);
		float newHeight = rapport*newWidth;
		float scaleWidth = newWidth;
		float scaleHeight = newHeight;
 
		//Eviter la pixelisation, on n'augmente pas la taille
		if(newWidth>width){
			newWidth=width;
			newHeight=height;
		}
 
Matrix matrix = new Matrix();
		matrix.postScale(scaleWidth, scaleHeight);

La fonction postScale veut un coefficient et non la nouvelle valeur, c'est pour cela que tu as un dépassement.

Donc

Code :

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float scaleWidth = newWidth / oldwidth;
float scaleHeight = newHeight / oldheight;

**Jojo____** · 10/01/2012, 16h36

Ohlalalala. Merci beaucoup !!!!!!!!!!

Affichage d'une image depuis URL

Android

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