Je développe une application simple. Je viens de terminer l'écran d'accueil. Si l'orientation change plus de deux fois, cela génère l'erreur et l'application se ferme de force.
public class PasswordActivity extends Activity implements OnClickListener {
Button login;
Button forgot;
Button register;
private static final String PREFERENCES = "prefs";
private static final String PREFERENCES_NAME = "pref_name";
SharedPreferences settings;
private Cursor c;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
login=(Button)findViewById(R.id.login_login);
login.setOnClickListener(this);
register=(Button)findViewById(R.id.login_register);
register.setOnClickListener(this);
}
public void onClick(View v) {
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:Android="http://schemas.Android.com/apk/res/Android"
Android:layout_width="fill_parent"
Android:layout_height="wrap_content"
Android:orientation="vertical"
Android:background="@drawable/listpic"
>
<LinearLayout
Android:layout_width="fill_parent"
Android:layout_height="wrap_content"
Android:orientation="horizontal"
Android:paddingTop="5dp"
Android:paddingLeft="3dp"
Android:paddingRight="3dp"
>
<TextView
Android:layout_width="fill_parent"
Android:layout_weight="0.75"
Android:layout_height="wrap_content"
Android:text="@string/login_user_name"
Android:textStyle="bold"
/>
<EditText
Android:layout_width="fill_parent"
Android:layout_height="wrap_content"
Android:layout_weight="0.25"
Android:id="@+id/login_user_name"
Android:inputType="text"
/>
</LinearLayout>
<LinearLayout
Android:layout_width="fill_parent"
Android:layout_height="wrap_content"
Android:orientation="horizontal"
Android:paddingLeft="3dp"
Android:paddingRight="3dp"
>
<TextView
Android:layout_width="fill_parent"
Android:layout_weight="0.75"
Android:layout_height="wrap_content"
Android:text="@string/login_password"
Android:textStyle="bold"
/>
<EditText
Android:layout_width="fill_parent"
Android:layout_height="wrap_content"
Android:layout_weight="0.25"
Android:inputType="textPassword"
Android:id="@+id/login_password"
/>
</LinearLayout>
<LinearLayout
Android:layout_width="fill_parent"
Android:layout_height="wrap_content"
Android:orientation="horizontal"
Android:paddingLeft="3dp"
Android:paddingRight="3dp"
>
<Button
style="@style/left_button"
Android:text="@string/login_submit"
Android:id="@+id/login_login"
/>
<Button
style="@style/right_button"
Android:id="@+id/login_register"
Android:text="@string/register"
/>
</LinearLayout>
</LinearLayout>
10-21 12:05:59.982: D/dalvikvm(622): GC_EXTERNAL_ALLOC freed 774 objects / 56240 bytes in 61ms
10-21 12:06:15.031: D/dalvikvm(622): GC_EXTERNAL_ALLOC freed 737 objects / 30992 bytes in 59ms
10-21 12:06:18.022: E/dalvikvm-heap(622): 7596000-byte external allocation too large for this process.
10-21 12:06:18.022: E/GraphicsJNI(622): VM won't let us allocate 7596000 bytes
10-21 12:06:18.043: D/AndroidRuntime(622): Shutting down VM
10-21 12:06:18.043: W/dalvikvm(622): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
10-21 12:06:18.092: E/AndroidRuntime(622): FATAL EXCEPTION: main
10-21 12:06:18.092: E/AndroidRuntime(622): Java.lang.RuntimeException: Unable to start activity ComponentInfo{com.ravi.password/com.ravi.password.PasswordActivity}: Android.view.InflateException: Binary XML file line #2: Error inflating class <unknown>
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.app.ActivityThread.performLaunchActivity(ActivityThread.Java:2663)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.app.ActivityThread.main(ActivityThread.Java:4627)
10-21 12:06:18.092: E/AndroidRuntime(622): at Java.lang.reflect.Method.invokeNative(Native Method)
10-21 12:06:18.092: E/AndroidRuntime(622): at Java.lang.reflect.Method.invoke(Method.Java:521)
10-21 12:06:18.092: E/AndroidRuntime(622): at com.Android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.Java:868)
10-21 12:06:18.092: E/AndroidRuntime(622): at com.Android.internal.os.ZygoteInit.main(ZygoteInit.Java:626)
10-21 12:06:18.092: E/AndroidRuntime(622): at dalvik.system.NativeStart.main(Native Method)
10-21 12:06:18.092: E/AndroidRuntime(622): Caused by: Android.view.InflateException: Binary XML file line #2: Error inflating class <unknown>
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.view.LayoutInflater.createView(LayoutInflater.Java:513)
10-21 12:06:18.092: E/AndroidRuntime(622): at com.Android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.Java:56)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.view.LayoutInflater.createViewFromTag(LayoutInflater.Java:563)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.view.LayoutInflater.inflate(LayoutInflater.Java:385)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.view.LayoutInflater.inflate(LayoutInflater.Java:320)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.view.LayoutInflater.inflate(LayoutInflater.Java:276)
10-21 12:06:18.092: E/AndroidRuntime(622): at com.Android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.Java:198)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.app.Activity.setContentView(Activity.Java:1647)
10-21 12:06:18.092: E/AndroidRuntime(622): at com.ravi.password.PasswordActivity.onCreate(PasswordActivity.Java:34)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.app.Instrumentation.callActivityOnCreate(Instrumentation.Java:1047)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.app.ActivityThread.performLaunchActivity(ActivityThread.Java:2627)
10-21 12:06:18.092: E/AndroidRuntime(622): ... 12 more
10-21 12:06:18.092: E/AndroidRuntime(622): Caused by: Java.lang.reflect.InvocationTargetException
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.widget.LinearLayout.<init>(LinearLayout.Java:115)
10-21 12:06:18.092: E/AndroidRuntime(622): at Java.lang.reflect.Constructor.constructNative(Native Method)
10-21 12:06:18.092: E/AndroidRuntime(622): at Java.lang.reflect.Constructor.newInstance(Constructor.Java:446)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.view.LayoutInflater.createView(LayoutInflater.Java:500)
10-21 12:06:18.092: E/AndroidRuntime(622): ... 22 more
10-21 12:06:18.092: E/AndroidRuntime(622): Caused by: Java.lang.OutOfMemoryError: bitmap size exceeds VM budget
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.graphics.Bitmap.nativeCreate(Native Method)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.graphics.Bitmap.createBitmap(Bitmap.Java:468)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.graphics.Bitmap.createBitmap(Bitmap.Java:435)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.graphics.Bitmap.createScaledBitmap(Bitmap.Java:340)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.graphics.BitmapFactory.finishDecode(BitmapFactory.Java:488)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.graphics.BitmapFactory.decodeStream(BitmapFactory.Java:462)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.Java:323)
10-21 12:06:18.092: E/AndroidRuntime(622): at Android.view.ViewGroup.<init>(ViewGroup.Java:285)
10-21 12:06:18.092: E/AndroidRuntime(622): ... 26 more
Les images sont de très petite taille autour de 5 Ko.
Au moment de l'exécution, Android redimensionne les images en fonction des besoins (en fonction de la taille et de la résolution de l'écran). Il utilise Bitmap pour effectuer le redimensionnement en interne. Ce qui, évidemment, est très gourmand en mémoire (alloue en quelque sorte de la mémoire comme Un moyen rapide de résoudre ces problèmes peut être de copier tous les fichiers dessinables dans des dossiers drawable-ldpi, mdpi, hdpi. De cette façon Android va simplement récupérer les fichiers de ces dossiers et ne pas les redimensionner.
C'est une exception aléatoire, une vraie douleur à corriger.
veuillez suivre la taille de l'image d'arrière-plan
pour appareil pris en charge
LDPI:
Portrait: 200x320px
Landscape: 320x200px
MDPI:
Portrait: 320x480px
Landscape: 480x320px
HDPI:
Portrait: 480x800px
Landscape: 800x480px
XHDPI:
Portrait: 720px1280px
Landscape: 1280x720px