Android Studio - 无法打开 PNG 文件 [英] Android Studio - Unable to open PNG file

问题描述

我正在尝试将 Facebook 集成到我的应用程序中，但是在 Android Studio 中运行它时，我得到了这个:

I'm trying to integrate Facebook into my app, but while running it in Android Studio, I get this:

Gradle:任务 ':AplikaceBeta1.0.1:mergeDebugResources' 执行失败.无法运行命令:C:\Users\David\AppData\Local\Android\android-studio\sdk\build-tools\android-4.2.2\aapt.exe s -i C:\Users\David\Desktop\facebook-android-sdk-3.5\facebook-android-sdk-3.5\samples\AplikaceBeta1.0.1Project\AplikaceBeta1.0.1\build\exploded-bundles\AplikaceBeta101ProjectLibrariesFacebookUnspecified.aar\res\drawable\com_facebook_profile_picture_blank_square\Devided-bundles-android-sdk-3.5\facebook-android-sdk-3.5\samples\AplikaceBeta1.0.1Project\AplikaceBeta1.0.1\build\res\all\debug\drawable\com_facebook_profile_picture_blank_square.png错误代码:42输出:C:\Users\David\Desktop\facebook-android-sdk-3.5\facebook-android-sdk-3.5\samples\AplikaceBeta1.0.1Project\AplikaceBeta1.0.1\build\exploded-bundles\AplikaceBeta101ProjectLibrariesFacebookUnspecifieddrawable.aar\com_facebook_profile_picture_blank_square.png 错误:无法打开 PNG 文件

Gradle: Execution failed for task ':AplikaceBeta1.0.1:mergeDebugResources'. Failed to run command: C:\Users\David\AppData\Local\Android\android-studio\sdk\build-tools\android-4.2.2\aapt.exe s -i C:\Users\David\Desktop\facebook-android-sdk-3.5\facebook-android-sdk-3.5\samples\AplikaceBeta1.0.1Project\AplikaceBeta1.0.1\build\exploded-bundles\AplikaceBeta101ProjectLibrariesFacebookUnspecified.aar\res\drawable\com_facebook_profile_picture_blank_square.png -o C:\Users\David\Desktop\facebook-android-sdk-3.5\facebook-android-sdk-3.5\samples\AplikaceBeta1.0.1Project\AplikaceBeta1.0.1\build\res\all\debug\drawable\com_facebook_profile_picture_blank_square.png Error Code: 42 Output: C:\Users\David\Desktop\facebook-android-sdk-3.5\facebook-android-sdk-3.5\samples\AplikaceBeta1.0.1Project\AplikaceBeta1.0.1\build\exploded-bundles\AplikaceBeta101ProjectLibrariesFacebookUnspecified.aar\res\drawable\com_facebook_profile_picture_blank_square.png ERROR: Unable to open PNG file

无法打开 PNG 文件...什么?！

Unable to open PNG file... what?!

代码与中的代码完全相同适用于 Android 的 Facebook SDK 入门 (Android Studio)"指南.真的很简单，这是我的MainActivity.java:

Code is totally the same as in "Getting Started with the Facebook SDK for Android (Android Studio)" guide. It's really simple, this is my MainActivity.java:

package com.example.aplikacebeta101;

import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.widget.TextView;
import com.facebook.*;
import com.facebook.model.*;

public class MainActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // start Facebook Login
        Session.openActiveSession(this, true, new Session.StatusCallback() {

            // callback when session changes state
            @Override
            public void call(Session session, SessionState state, Exception exception)             {
            if (session.isOpened()) {

                // make request to the /me API
                Request.executeMeRequestAsync(session, new Request.GraphUserCallback() {

                    // callback after Graph API response with user object
                    @Override
                    public void onCompleted(GraphUser user, Response response) {
                        if (user != null) {
                            TextView welcome = (TextView) findViewById(R.id.welcome);
                            welcome.setText("Hello " + user.getName() + "!");
                        }
                    }
                });
            }
        }
    });
}

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    Session.getActiveSession().onActivityResult(this, requestCode, resultCode, data);
}

}

有什么想法吗?我知道，Android Studio 仍然是 EAP，但我认为这不是由 Android Studio 引起的.

Any ideas? I know, Android Studio is still EAP, but I think this is not caused by Android Studio.

推荐答案

您使用的是 Windows 吗?如果生成的构建文件路径超过 260 个字符的 Windows(非 NTFS)最大路径长度，则可能发生此错误.确保您的项目路径不要太长，也使用短名称.来自 MS 的更多信息:

Are you using Windows? This error could happen if the generated build file path exceeds the Windows (not NTFS) max path length of 260 characters. Make sure your project path is not too long, use short names as well. More info from MS:

最大路径长度限制在 Windows API 中(以下段落中讨论的一些例外情况除外)，路径的最大长度为 MAX_PATH，定义为 260 个字符.本地路径按以下顺序构造:驱动器号、冒号、反斜杠、由反斜杠分隔的名称组件和终止空字符.例如，驱动器 D 上的最大路径是D:\some 256-character path string"，其中"表示当前系统代码页的不可见终止空字符.(这里使用字符 < > 是为了视觉清晰，不能是有效路径字符串的一部分.)

Maximum Path Length Limitation In the Windows API (with some exceptions discussed in the following paragraphs), the maximum length for a path is MAX_PATH, which is defined as 260 characters. A local path is structured in the following order: drive letter, colon, backslash, name components separated by backslashes, and a terminating null character. For example, the maximum path on drive D is "D:\some 256-character path string" where "" represents the invisible terminating null character for the current system codepage. (The characters < > are used here for visual clarity and cannot be part of a valid path string.)

另见讨论为什么限制Windows存在.

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