Question

APP每次调用ftp写操作时都会崩溃。

我在Fragment中有以下两种方法。

public void uploadData () {     


        String domain = "10.142.42.10";  // <<< will it work as it is private ip?
        String user = "xxxx";
        String password = "xxxx";
        String serverRoad = "Documents";

        File file = new File("/sdcard/bluetooth/NRC_jiten.pdf");
        FTPClient ftp = new FTPClient();
        try {
            ftp.connect(InetAddress.getByName(domain));
            //ftp.connect(domain,21);
            ftp.login(user, password);

            ftp.changeWorkingDirectory(serverRoad);
            ftp.setFileType(FTP.BINARY_FILE_TYPE);
            FileInputStream is = new FileInputStream(file);
            BufferedInputStream buffIn = new BufferedInputStream(is);
            ftp.enterLocalPassiveMode();
            ftp.storeFile("jiten_pdf.pdf", buffIn);
            buffIn.close();

            ftp.logout();
            ftp.disconnect();
        } catch (Exception e) {
            Toast.makeText(getActivity(), "err:" + e,
                    Toast.LENGTH_SHORT).show();
        }
}

public void uploadFileBackground () {

        new Thread(new Runnable() {
            public void run() {

                uploadData();

            }
        }).start();


    }

现在，从Activity我点击按钮后触发uploadFileBackground。

代码有什么问题吗？我已经推荐过这个网站，但无法成功。

TIA。

logcat的

            08-25 19:00:56.042  16119-16119/com.sbordolo.potholefinder W/GooglePlayServicesUtil﹕ Google Play services out of date.  Requires 7571000 but found 6774470
08-25 19:00:56.044  16119-16119/com.sbordolo.potholefinder W/GooglePlayServicesUtil﹕ Google Play services out of date.  Requires 7571000 but found 6774470
08-25 19:00:56.047  16119-16119/com.sbordolo.potholefinder W/GooglePlayServicesUtil﹕ Google Play services out of date.  Requires 7571000 but found 6774470
08-25 19:00:56.047  16119-16119/com.sbordolo.potholefinder W/GooglePlayServicesUtil﹕ Google Play services out of date.  Requires 7571000 but found 6774470
08-25 19:00:56.049  16119-16119/com.sbordolo.potholefinder W/GooglePlayServicesUtil﹕ Google Play services out of date.  Requires 7571000 but found 6774470
08-25 19:00:56.050  16119-16119/com.sbordolo.potholefinder W/GooglePlayServicesUtil﹕ Google Play services out of date.  Requires 7571000 but found 6774470
08-25 19:00:56.051  16119-16119/com.sbordolo.potholefinder W/GooglePlayServicesUtil﹕ Google Play services out of date.  Requires 7571000 but found 6774470
08-25 19:00:56.052  16119-16119/com.sbordolo.potholefinder W/GooglePlayServicesUtil﹕ Google Play services out of date.  Requires 7571000 but found 6774470
08-25 19:00:56.052  16119-16119/com.sbordolo.potholefinder W/GooglePlayServicesUtil﹕ Google Play services out of date.  Requires 7571000 but found 6774470
08-25 19:00:56.056  16119-16119/com.sbordolo.potholefinder W/GooglePlayServicesUtil﹕ Google Play services out of date.  Requires 7571000 but found 6774470
08-25 19:00:56.056  16119-16119/com.sbordolo.potholefinder W/GooglePlayServicesUtil﹕ Google Play services out of date.  Requires 7571000 but found 6774470
08-25 19:00:56.058  16119-16119/com.sbordolo.potholefinder W/GooglePlayServicesUtil﹕ Google Play services out of date.  Requires 7571000 but found 6774470
08-25 19:00:56.079  16119-16138/com.sbordolo.potholefinder D/OpenGLRenderer﹕ Use EGL_SWAP_BEHAVIOR_PRESERVED: true
08-25 19:00:56.080  16119-16119/com.sbordolo.potholefinder D/﹕ HostConnection::get() New Host Connection established 0xb3ffc140, tid 16119
08-25 19:00:56.088  16119-16119/com.sbordolo.potholefinder D/Atlas﹕ Validating map...
08-25 19:00:56.474  16119-16138/com.sbordolo.potholefinder D/﹕ HostConnection::get() New Host Connection established 0xb3ffc3c0, tid 16138
08-25 19:00:56.483  16119-16138/com.sbordolo.potholefinder I/OpenGLRenderer﹕ Initialized EGL, version 1.4
08-25 19:00:56.488  16119-16138/com.sbordolo.potholefinder D/OpenGLRenderer﹕ Enabling debug mode 0
08-25 19:00:56.514  16119-16138/com.sbordolo.potholefinder W/EGL_emulation﹕ eglSurfaceAttrib not implemented
08-25 19:00:56.514  16119-16138/com.sbordolo.potholefinder W/OpenGLRenderer﹕ Failed to set EGL_SWAP_BEHAVIOR on surface 0xb3fdb4e0, error=EGL_SUCCESS
08-25 19:00:56.844  16119-16119/com.sbordolo.potholefinder E/WindowManager﹕ android.view.WindowLeaked: Activity com.sbordolo.potholefinder.HomeScreen has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{9052cc6 V.E..... R....... 0,0-1026,591} that was originally added here
            at android.view.ViewRootImpl.<init>(ViewRootImpl.java:363)
            at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:271)
            at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:85)
            at android.app.Dialog.show(Dialog.java:298)
            at com.sbordolo.potholefinder.CoordinateClass.isGooglePlayServicesAvailable(CoordinateClass.java:110)
            at com.sbordolo.potholefinder.CoordinateClass.onActivityCreated(CoordinateClass.java:66)
            at android.app.Fragment.performActivityCreated(Fragment.java:2061)
            at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:912)
            at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1067)
            at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1049)
            at android.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:1869)
            at android.app.Activity.performCreateCommon(Activity.java:5985)
            at android.app.Activity.performCreate(Activity.java:5992)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
            at android.app.ActivityThread.access$800(ActivityThread.java:151)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5257)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)

Answer 1

首先，使用Google Play应用更新您的Google Play服务。正如你在这里看到的那样：

Google Play services out of date.

它已经过时了。

其次，请不要像这样使用Thread在Android上执行背景操作

（...）它违反了单线程模型的第二条规则： 没有从UI线程外部访问Android UI工具包 。

尝试使用AsyncTask，Service或Handler。

有关线程here，服务here和处理程序here的更多信息。

现在针对您的问题，您将收到此异常：

android.view.WindowLeaked: Activity com.sbordolo.potholefinder.HomeScreen has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{9052cc6 V.E..... R....... 0,0-1026,591} that was originally added here

由于代码中没有被忽略WindowLeaked，因此最常抛出Dialog个例外。

您的logcat跟踪显示Dialog正在尝试弹出：

at android.app.Dialog.show(Dialog.java:298)

编辑：因为Toast而崩溃了。删除它，或尝试上面的解决方案，你应该没事。

第二次编辑：正如您所提到的，只是为了让答案完整，您的ftp服务器需要设置正确的权限，因此您的程序可以在那里编写内容。您的chmod 777可以正常工作，但要小心，因为它让您的服务器处于打开状态，以便任何人都可以在那里写信。

Answer 2

我找到了根本原因，在查看pcap文件时发现了一个权限问题。 FTP登录成功，但是由于权限问题，客户端试图放置文件时，它失败了！将目录权限设为777，已修复！

感谢Mauker帮助我解决这个问题。

感谢。

Answer 3

这是我为应用程序实现的代码。

public static String getDiretorioBackup() {

    String diretorio = "";
    if (android.os.Build.VERSION.SDK_INT >= 23) {
        diretorio = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS) + "/" + "dir";
    }
    else {
        diretorio = Environment.getExternalStorageDirectory() + "/" + "dir";    
    }

    return diretorio;
}


public static FTPClient connnectFTP(String ip, String userName, String pass) throws Exception{   

        FTPClient mFtpClient = new FTPClient();  
        mFtpClient.setConnectTimeout(10 * 1000);
        mFtpClient.connect( ip );

        boolean status = mFtpClient.login(userName, pass);  
        Log.e("login ftp:", String.valueOf(status));  

        return mFtpClient;
    } 


public static Boolean uploadFile(String email, String pathUpload, String guidStr) throws Exception
    {  
        FTPClient ftpClient = connnectFTP(Constantes.FTP, Constantes.FTP_USER, Constantes.FTP_PASS);

        if(ftpClient != null)
        {                   
            FileInputStream srcFileStream = new FileInputStream( getDiretorioBackup() +"/"+ ConstantesBanco.DATABASE_NAME ); //antes de fazer o ftp é feita a cópia local  
            ftpClient.enterLocalPassiveMode();
            ftpClient.setFileTransferMode(ftpClient.BINARY_FILE_TYPE);
            ftpClient.setFileType(ftpClient.BINARY_FILE_TYPE);


            boolean status = ftpClient.storeFile( pathUpload+fileName , srcFileStream);

            Log.d(TAG, String.valueOf(status) + "- reply code:"+ ftpClient.getReplyCode()+" "+ftpClient.getReplyString());  
            srcFileStream.close();
            ftpClient.disconnect();

            return status;
        }
        else{
            throw new BackupFtpException(Constantes.ERRO_SERV_FTP);         
        }
    }

如何从android程序上传一个sqlite db文件到ftp服务器

3 个答案: