膨胀视图的问题

时间：2011-08-12 18:52:16

标签： android view layout-inflater

我试图在我的glSurfaceView期间在我onCreate期间交换纹理时，为我的RelativeLayout充当一个加载屏幕的视图（我知道如何在我inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); loading = inflater.inflate(R.layout.loading,null); RelativeLayout loadingScreen = (RelativeLayout) findViewById(R.id.loadingScreen); 期间做到这一点）。它只是一个<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/loadingScreen" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#FFFFFF" android:visibility="visible" > <ProgressBar android:id="@+id/progressBar1" style="?android:attr/progressBarStyleLarge" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" > </ProgressBar> <EditText android:id="@+id/editText android:layout_height=" android:layout_width="wrap_content" wrap_content="" > </EditText> </RelativeLayout> ，中间有一个进度条，当它完成交换时它会消失，但它没有正确膨胀。

EditText tester = (EditText) findViewById(R.id.editText); //Now we have an object
    tester.setText("dfdfds");

其中loadingScreen是相对布局的id。

的xml：

08-12 15:07:35.630: ERROR/ActivityThread(2502): Failed to inflate
08-12 15:07:35.630: ERROR/ActivityThread(2502): android.view.InflateException: Binary XML file line #5: Error inflating class com.huskybus.CampusMapOpenGL
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at android.view.LayoutInflater.createView(LayoutInflater.java:518)
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:570)
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:623)
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at android.view.LayoutInflater.inflate(LayoutInflater.java:408)
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:212)
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at android.app.Activity.setContentView(Activity.java:1657)
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at com.huskybus.Main.onCreate(Main.java:91)
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1722)
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1784)
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at android.app.ActivityThread.access$1500(ActivityThread.java:123)
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:939)
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at android.os.Handler.dispatchMessage(Handler.java:99)
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at android.os.Looper.loop(Looper.java:130)
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at android.app.ActivityThread.main(ActivityThread.java:3835)
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at java.lang.reflect.Method.invokeNative(Native Method)
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at java.lang.reflect.Method.invoke(Method.java:507)
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:847)
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:605)
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at dalvik.system.NativeStart.main(Native Method)
08-12 15:07:35.630: ERROR/ActivityThread(2502): Caused by: java.lang.reflect.InvocationTargetException
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at java.lang.reflect.Constructor.constructNative(Native Method)
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at java.lang.reflect.Constructor.newInstance(Constructor.java:415)
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at android.view.LayoutInflater.createView(LayoutInflater.java:505)
08-12 15:07:35.630: ERROR/ActivityThread(2502):     ... 21 more
08-12 15:07:35.630: ERROR/ActivityThread(2502): Caused by: java.lang.NullPointerException
08-12 15:07:35.630: ERROR/ActivityThread(2502):     at com.huskybus.CampusMapOpenGL.<init>(CampusMapOpenGL.java:101)
08-12 15:07:35.630: ERROR/ActivityThread(2502):     ... 24 more
08-12 15:07:35.637: DEBUG/AndroidRuntime(2502): Shutting down VM
08-12 15:07:35.637: WARN/dalvikvm(2502): threadid=1: thread exiting with uncaught exception (group=0x40015560)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502): FATAL EXCEPTION: main
08-12 15:07:35.653: ERROR/AndroidRuntime(2502): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.huskybus/com.huskybus.Main}: android.view.InflateException: Binary XML file line #5: Error inflating class com.huskybus.CampusMapOpenGL
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1768)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1784)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at android.app.ActivityThread.access$1500(ActivityThread.java:123)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:939)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at android.os.Handler.dispatchMessage(Handler.java:99)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at android.os.Looper.loop(Looper.java:130)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at android.app.ActivityThread.main(ActivityThread.java:3835)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at java.lang.reflect.Method.invokeNative(Native Method)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at java.lang.reflect.Method.invoke(Method.java:507)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:847)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:605)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at dalvik.system.NativeStart.main(Native Method)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502): Caused by: android.view.InflateException: Binary XML file line #5: Error inflating class com.huskybus.CampusMapOpenGL
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at android.view.LayoutInflater.createView(LayoutInflater.java:518)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:570)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:623)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at android.view.LayoutInflater.inflate(LayoutInflater.java:408)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:212)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at android.app.Activity.setContentView(Activity.java:1657)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at com.huskybus.Main.onCreate(Main.java:91)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1722)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     ... 11 more
08-12 15:07:35.653: ERROR/AndroidRuntime(2502): Caused by: java.lang.reflect.InvocationTargetException
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at java.lang.reflect.Constructor.constructNative(Native Method)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at java.lang.reflect.Constructor.newInstance(Constructor.java:415)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at android.view.LayoutInflater.createView(LayoutInflater.java:505)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     ... 21 more
08-12 15:07:35.653: ERROR/AndroidRuntime(2502): Caused by: java.lang.NullPointerException
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     at com.huskybus.CampusMapOpenGL.<init>(CampusMapOpenGL.java:101)
08-12 15:07:35.653: ERROR/AndroidRuntime(2502):     ... 24 more

对于测试，我在上面的附加代码上面添加了一个EditText来测试它：

{{1}}

和错误日志：

{{1}}

3 个答案:

答案 0 :(得分：2)

尝试loading.findViewById（...）而不仅仅是findViewById（...）

答案 1 :(得分：0)

我也有这些错误。我发现错误是因为我的文本编辑器名称与我的文本编辑器ID不匹配。

答案 2 :(得分：0)

当您查看视图时，您需要在查找此类子视图时使用该视图

    inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    loading = inflater.inflate(R.layout.loading,null);
    RelativeLayout loadingScreen = (RelativeLayout) loading.findViewById(R.id.loadingScreen);
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