小编Ibr*_*uki的帖子

我不知道如何描述这个问题.我搜索了很多,但我找不到任何解决方案.

此解决方案也没有帮助我-keepattributes EnclosingMethod:

dependencies {
    compile project(':libraries:material-drawer')
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.2.0'
    compile 'com.android.support:recyclerview-v7:23.2.0'
    compile 'com.android.support:design:23.2.0'
    compile 'com.google.code.gson:gson:2.4'
    compile 'com.mcxiaoke.volley:library:1.0.19'
    compile 'com.squareup.picasso:picasso:2.5.2'
    compile 'com.squareup.okhttp:okhttp:2.4.0'
    compile 'de.greenrobot:eventbus:2.4.0'
    compile 'com.commit451:PhotoView:1.2.4'
    compile 'com.nineoldandroids:library:2.4.0'
    compile 'com.viewpagerindicator:viewpagerindicator:2.4.3'
    compile('com.github.afollestad.material-dialogs:commons:0.8.5.6@aar') {
        transitive = true
    }
    compile('com.crashlytics.sdk.android:crashlytics:2.5.5@aar') {
        transitive = true;
    }
}

并且jar文件夹包含ormlite-android-4.48.jar和ormlite-core-4.48.jar.

Proguard文件:

-keepattributes EnclosingMethod
-dontobfuscate

-keep public class * extends android.support.v4.view.ActionProvider {
    public <init>(android.content.Context);
}

-dontwarn android.support.v4.**

#FOR APPCOMPAT 23.1.1:
-keep class !android.support.v7.view.menu.*MenuBuilder*, android.support.v7.** { …

由于以下错误，无法使用 Android Studio 4.2 构建新项目：

A problem occurred configuring root project 'My Application'.
> Could not resolve all artifacts for configuration ':classpath'.
   > Could not find org.jetbrains.kotlin:kotlin-gradle-plugin:1.5.0-release-764.
     Searched in the following locations:
       - https://dl.google.com/dl/android/maven2/org/jetbrains/kotlin/kotlin-gradle-plugin/1.5.0-release-764/kotlin-gradle-plugin-1.5.0-release-764.pom
       - https://repo.maven.apache.org/maven2/org/jetbrains/kotlin/kotlin-gradle-plugin/1.5.0-release-764/kotlin-gradle-plugin-1.5.0-release-764.pom
     Required by:
         project :

Possible solution:
 - Declare repository providing the artifact, see the documentation at https://docs.gradle.org/current/userguide/declaring_repositories.html

当我将 Kotlin 插件版本从更改ext.kotlin_version = "1.5.0-release-764"为ext.kotlin_version = "1.5.0"应用程序构建成功但出现以下警告时：

Kotlin version that is used for building with Gradle (1.5.0) differs from the one bundled into …

我正在尝试登录而不使用登录按钮.我跟着facebook教程,但我不能让它工作,总是给我NullPointerException.我的清单:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.hema.testfcaebooksdk" >

    <uses-permission android:name="android.permission.INTERNET"/>

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >

        <meta-data android:name="com.facebook.sdk.ApplicationId" android:value="@string/facebook_app_id"/>

        <activity android:name="com.facebook.FacebookActivity"
            android:configChanges=
                "keyboard|keyboardHidden|screenLayout|screenSize|orientation"
            android:theme="@android:style/Theme.Translucent.NoTitleBar"
            android:label="@string/app_name" />

        <provider android:authorities="com.facebook.app.FacebookContentProvider****************"
            android:name="com.facebook.FacebookContentProvider"
            android:exported="true" />

        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

我用它来登录facebook的活动:

public class MainActivity extends ActionBarActivity {

    CallbackManager callbackManager;
    LoginManager loginManager;

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

        FacebookSdk.sdkInitialize(getApplicationContext());

        callbackManager = CallbackManager.Factory.create();

        loginManager = LoginManager.getInstance();

        loginManager.registerCallback(callbackManager,
                new FacebookCallback<LoginResult>() {
                    @Override
                    public void onSuccess(LoginResult …

我正在尝试使用ParseFacebookUtils库登录Facebook并且它运行良好,但是当我启用Proguard文件时,我在Facebook登录活动启动时遇到此异常:

Fatal Exception: java.lang.RuntimeException: Unable to start activity ComponentInfo{my.package.name/com.facebook.FacebookActivity}: java.lang.NullPointerException
       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2413)
       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2471)
       at android.app.ActivityThread.access$900(ActivityThread.java:175)
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1308)
       at android.os.Handler.dispatchMessage(Handler.java:102)
       at android.os.Looper.loop(Looper.java:146)
       at android.app.ActivityThread.main(ActivityThread.java:5602)
       at java.lang.reflect.Method.invokeNative(Method.java)
       at java.lang.reflect.Method.invoke(Method.java:515)
       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1283)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099)
       at dalvik.system.NativeStart.main(NativeStart.java)
Caused by java.lang.NullPointerException
       at java.lang.Enum$1.create(Enum.java:43)
       at java.lang.Enum$1.create(Enum.java:35)
       at libcore.util.BasicLruCache.get(BasicLruCache.java:54)
       at java.lang.Enum.getSharedConstants(Enum.java:209)
       at java.lang.Enum.valueOf(Enum.java:189)
       at com.facebook.login.LoginBehavior.valueOf(LoginBehavior.java:26)
       at com.facebook.login.LoginClient$Request.(LoginClient.java)
       at com.facebook.login.LoginClient$Request.(LoginClient.java)
       at com.facebook.login.LoginClient$Request$1.createFromParcel(LoginClient.java:2521)
       at android.os.Parcel.readParcelable(Parcel.java:2111)
       at android.os.Parcel.readValue(Parcel.java:2020)
       at android.os.Parcel.readArrayMapInternal(Parcel.java:2321)
       at android.os.Bundle.unparcel(Bundle.java:249)
       at android.os.Bundle.getString(Bundle.java:1118)
       at android.content.Intent.getStringExtra(Intent.java:5145)
       at com.google.android.gms.analytics.Tracker$zza.zziJ(Unknown Source:4000)
       at com.google.android.gms.analytics.GoogleAnalytics.isInitialized(Unknown Source)
       at com.google.android.gms.analytics.GoogleAnalytics$zzb.onActivityStarted(Unknown Source)
       at android.app.Application.dispatchActivityStarted(Application.java:219)
       at android.app.Activity.onStart(Activity.java:1087) …

我有android studio 1.1.0,我刚创建了一个新项目,我正在尝试导入新的facebook-sdk 4.0.1但是不能这样做,我跟着Facebook入门

但无法让它发挥作用.我的app结构

我的build.gradle(Project:MyApplication)文件是:

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.1.0'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
        //mavenCentral()
    }
}

我的build.gradle(Module:app)文件是:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 22
    buildToolsVersion "21.1.2"

    defaultConfig {
        applicationId "com.example.hema.myapplication"
        minSdkVersion 9
        targetSdkVersion 22
        versionCode 1 …