Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class <unknown>錯誤

在我的項目中，遇到一個奇葩的問題，那就是當我退出，重新進入加載頁的時候，就報了下面的錯誤，看到紅色的文字：

java.lang.RuntimeException: Unable to start activity ComponentInfo{***.ui.login.WelcomeActivity}:android.view.InflateException: Binary XML file line #7: Error inflating class<unknown>atandroid.app.ActivityThread.performLaunchActivity(ActivityThread.java:2304)at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2358)at android.app.ActivityThread.access$700(ActivityThread.java:165)at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1326)at android.os.Handler.dispatchMessage(Handler.java:99)at android.os.Looper.loop(Looper.java:137)at android.app.ActivityThread.main(ActivityThread.java:5450)at java.lang.reflect.Method.invokeNative(Native Method)at java.lang.reflect.Method.invoke(Method.java:525)at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1187)at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)at dalvik.system.NativeStart.main(Native Method)

Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class <unknown>atandroid.view.LayoutInflater.createView(LayoutInflater.java:626)at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56)at android.view.LayoutInflater.onCreateView(LayoutInflater.java:675)at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:700)at android.view.LayoutInflater.rInflate(LayoutInflater.java:761)at android.view.LayoutInflater.inflate(LayoutInflater.java:498)at android.view.LayoutInflater.inflate(LayoutInflater.java:398)at android.view.LayoutInflater.inflate(LayoutInflater.java:354)at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:361)at android.app.Activity.setContentView(Activity.java:1956)at ***.ui.login.WelcomeActivity.initView(WelcomeActivity.java:44)at ***.ui.BaseActivity.onCreate(BaseActivity.java:51)at android.app.Activity.performCreate(Activity.java:5369)at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1104)at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2267)... 11 moreCaused by: java.lang.reflect.InvocationTargetExceptionat java.lang.reflect.Constructor.constructNative(Native Method)at java.lang.reflect.Constructor.newInstance(Constructor.java:417)at android.view.LayoutInflater.createView(LayoutInflater.java:600)... 25 more

Caused by: java.lang.OutOfMemoryError

at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method)at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:596)at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:444)at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:832)at android.content.res.Resources.loadDrawable(Resources.java:2988)at android.content.res.TypedArray.getDrawable(TypedArray.java:602)at android.view.View.<init>(View.java:3563)at android.widget.ImageView.<init>(ImageView.java:125)at android.widget.ImageView.<init>(ImageView.java:121)... 28 more

咋一看，是布局檔案出問題了，然後就去看了，發現寫的沒有錯誤（一開始還以為是android系統的問題），如下

我的布局檔案

<ImageView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@drawable/welcome_icon"
        android:scaleType="fitCenter" />
           

分析了幾種可能性：

1、布局檔案出錯了；Binary XML file line #7: Error inflating class <unknown>at

2、引用了相同名字的資源檔案，導緻嵌套調用，資源溢出；java.lang.OutOfMemoryError

3、資源檔案有問題（比如圖檔過大）；－－最後發現真的是這個問題，一開始突破有200k，然後改成63k，還是不行，最後改成22k，就解決了；

4、其他未知原因；

建議：

1、Android的界面能用png最好是用png，因為32位的png顔色過渡平滑且支援透明。我用的是jpg，要改過來才行；－－解決：真的是圖檔格式問題，必須要用到png格式的才不會oom；