android.view.InflateException：二进制XML文件行＃2：错误导致类<unknown> </unknown>

Question

我正在开发一个简单的应用程序。刚刚完成主屏幕。如果方向变化超过两次，则抛出错误并且应用程序强制关闭。

我的活动代码：

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) {
}

}

我的Xml代码：

<?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>

Log Cat详细信息：

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 

图像尺寸非常小，约为5kb。

Answer 1

在运行时，Android会根据需要调整图像大小（根据屏幕大小和分辨率）。它使用Bitmap来进行内部调整大小。显然，这是非常耗费内存的（有点像疯了一样分配内存）。解决此类问题的一种快速方法是，将所有可绘制文件复制到drawable-ldpi，mdpi，hdpi文件夹。这样android就可以从这些文件夹中获取文件，而不是调整它们的大小。

这是一个随机的例外，一个真正的痛苦需要解决。

Answer 2

请按照背景图片大小

支持的设备

LDPI:
Portrait: 200x320px
Landscape: 320x200px
MDPI:
Portrait: 320x480px
Landscape: 480x320px
HDPI:
Portrait: 480x800px
Landscape: 800x480px
XHDPI:
Portrait: 720px1280px
Landscape: 1280x720px

Answer 3

对不起，我的英语不好

我遇到了同样的问题，如果将任何“ xml ”文件放入“ drawable-24 ”中，只需将其移至“ drawable ” “，这就是我为解决此问题而采取的解决方案

祝您有美好的一天：）

Answer 4

正如其他人所澄清的那样，问题的一部分是与我为布局设置的背景图像有关的问题。但是，得到解决后，我不断遇到错误：

  

不幸的是，应用程序已停止

通过反复试验，我发现问题是由<view>元素引起的，将其删除后，我最终可以运行该应用程序。