當我改變我的XML RelativeLayout的順序時，應用程序崩潰android

Question

標題說明了這一切，我的應用程序每次更改佈局視圖時都會崩潰，我需要按鈕位於頂部，imageView1位於底部，與iv_photo在他們兩個之間。所以我嘗試把我的XML按鈕，並將其移動到底部，我的應用程序崩潰，即時通訊不改變代碼或任何東西，所有即時通訊只是簡單地移動代碼。我的繼承人代碼

犯規CRASH

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:context=".DashboardActivity" > 

    <ImageView 
     android:id="@+id/iv_photo" 
     android:layout_width="125dp" 
     android:layout_height="125dp" 
     android:layout_marginLeft="10dp" 
     android:layout_marginTop="10dp" /> 

    <Button 
     android:id="@+id/btn_crop" 
     android:layout_width="30dp" 
     android:layout_height="30dp" 
     android:layout_alignLeft="@+id/iv_photo" 
     android:layout_alignTop="@+id/iv_photo" 
     android:text="@string/Nothing" /> 

    <ImageView 
     android:id="@+id/imageView1" 
     android:layout_width="match_parent" 
     android:layout_height="105dp" 
     android:layout_centerHorizontal="true" 
     android:layout_marginTop="20dp" 
     android:scaleType="fitXY" 
     android:src="@drawable/whitestrip" /> 

</RelativeLayout> 

DOES CRASH

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:context=".DashboardActivity" > 

    <ImageView 
     android:id="@+id/imageView1" 
     android:layout_width="match_parent" 
     android:layout_height="105dp" 
     android:layout_centerHorizontal="true" 
     android:layout_marginTop="20dp" 
     android:scaleType="fitXY" 
     android:src="@drawable/whitestrip" /> 

    <ImageView 
     android:id="@+id/iv_photo" 
     android:layout_width="125dp" 
     android:layout_height="125dp" 
     android:layout_marginLeft="10dp" 
     android:layout_marginTop="10dp" /> 

    <Button 
     android:id="@+id/btn_crop" 
     android:layout_width="30dp" 
     android:layout_height="30dp" 
     android:layout_alignLeft="@+id/iv_photo" 
     android:layout_alignTop="@+id/iv_photo" 
     android:text="@string/Nothing" /> 

</RelativeLayout> 

繼承人的錯誤，我得到了我以前見過這樣的東西的logcat的

05-01 13:49:15.632: E/AndroidRuntime(32148): FATAL EXCEPTION: main 
05-01 13:49:15.632: E/AndroidRuntime(32148): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.atmebeta/com.example.atmebeta.DashboardActivity}: java.lang.ClassCastException: android.widget.ImageView 
05-01 13:49:15.632: E/AndroidRuntime(32148): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1651) 
05-01 13:49:15.632: E/AndroidRuntime(32148): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667) 
05-01 13:49:15.632: E/AndroidRuntime(32148): at android.app.ActivityThread.access$1500(ActivityThread.java:117) 
05-01 13:49:15.632: E/AndroidRuntime(32148): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935) 
05-01 13:49:15.632: E/AndroidRuntime(32148): at android.os.Handler.dispatchMessage(Handler.java:99) 
05-01 13:49:15.632: E/AndroidRuntime(32148): at android.os.Looper.loop(Looper.java:123) 
05-01 13:49:15.632: E/AndroidRuntime(32148): at android.app.ActivityThread.main(ActivityThread.java:3687) 
05-01 13:49:15.632: E/AndroidRuntime(32148): at java.lang.reflect.Method.invokeNative(Native Method) 
05-01 13:49:15.632: E/AndroidRuntime(32148): at java.lang.reflect.Method.invoke(Method.java:507) 
05-01 13:49:15.632: E/AndroidRuntime(32148): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:842) 
05-01 13:49:15.632: E/AndroidRuntime(32148): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600) 
05-01 13:49:15.632: E/AndroidRuntime(32148): at dalvik.system.NativeStart.main(Native Method) 
05-01 13:49:15.632: E/AndroidRuntime(32148): Caused by: java.lang.ClassCastException: android.widget.ImageView 
05-01 13:49:15.632: E/AndroidRuntime(32148): at com.example.atmebeta.DashboardActivity.onCreate(DashboardActivity.java:106) 
05-01 13:49:15.632: E/AndroidRuntime(32148): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
05-01 13:49:15.632: E/AndroidRuntime(32148): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615) 

Answer 1

。

嘗試運行一個乾淨的版本，然後再次運行您的應用程序。

窗欄去「項目」上

- >「乾淨」

乾淨所有的解決方案，然後它應該是所有好的。