小编ozO*_*cle的帖子

我正在尝试在第一个Android项目中配置AdMod。当我尝试运行该应用程序时，findViewByID始终返回null。

这是我主要活动的代码：

import android.app.Activity;
import android.content.Context;
import android.content.res.Configuration;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.os.Bundle;
import android.os.PowerManager;
import android.os.PowerManager.WakeLock;
import android.view.Window;


   import android.view.WindowManager;

public abstract class MyAndroidApp extends Activity {
    AdView adView;
    public static final  String MY_PUBLISHER_ID = "***********";

 @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    AdRequest adRequest = new AdRequest();
    adRequest.addTestDevice(AdRequest.TEST_EMULATOR);
    adView = new AdView(this, AdSize.BANNER, MY_PUBLISHER_ID);

    //R.id.main has value, I can see it in Eclipse
    RelativeLayout mainLayout = (RelativeLayout) findViewById(R.id.main);


    if ( mainLayout == null )
        Log.d("Error","Layout is null"); …

我有一个文件夹中匹配M*,S*的文件:

PS E:\Uploader> dir M*,S*
    Directory: E:\Uploader
Mode                LastWriteTime     Length Name
----                -------------     ------ ----
-----         6/05/2013  10:43 AM    5046659 M_1813O.zip
-a---        26/04/2013   4:51 PM        233 SurveyUploader.config
-a---         8/05/2013   5:15 PM      11788 SurveyUploader.log
-a---         8/05/2013   5:15 PM       6078 SurveyUploader.ps1
-----         6/05/2013  10:43 AM    3473113 S_1813O.zip

我只想将此过滤器传递给变量中的gci,但它不起作用:

PS E:\Uploader> $k="M*,S*"
PS E:\Uploader> gci *.* -include $k | where {!$_.PsIsContainer}
PS E:\Uploader> gci *.* -include @($k) | where {!$_.PsIsContainer}
<<no files returned!>>

如果我不将过滤器保存在变量中,它可以正常工作:

PS E:\Uploader> gci *.* -include S*,M* | where {!$_.PsIsContainer} …