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虽然我试图运行或调试代码解析符号R，它显示了无差错不能解析符号R.不能在Android Studio中1.2.2的Windows 8
解决方案我都试过了，
- 清洁工程
- 同步项目，gradle这个文件
- 的Invalidate缓存/重启..
- 重启机器人工作室和笔记本
- Android-sdk构建工具22
我已经发布了以下不同文件的代码。希望任何人都能找到解决方案。
activity_login_with_fb.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
tools:context="com.example.xyz.phase1.loginWithFb">
<com.facebook.login.widget.LoginButton
android:id="@+id/login_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="30dp"
android:layout_marginBottom="30dp" />
AndroidMainfest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.xyz.phase1" >
<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" >
<activity
android:name=".openingActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".loginWithFb"
android:label="@string/title_activity_login_with_fb" >
</activity>
<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" />
</application>
</manifest>
的build.gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 22
buildToolsVersion "22.0.1"
defaultConfig {
applicationId "com.example.xyz.phase1"
minSdkVersion 18
targetSdkVersion 22
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
compile 'com.android.support:appcompat-v7:22.+'
compile 'com.android.support:support-v4:22.0.0'
compile 'com.facebook.android:facebook-android-sdk:4.1.0'
compile project(':facebook')
}
loginWithfb.java
public class loginWithFb extends FragmentActivity
{
CallbackManager callbackManager;
AccessTokenTracker accessTokenTracker;
AccessToken accessToken;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login_with_fb);
FacebookSdk.sdkInitialize(this.getApplicationContext());
callbackManager = CallbackManager.Factory.create();
accessTokenTracker = new AccessTokenTracker() {
@Override
protected void onCurrentAccessTokenChanged(
AccessToken oldAccessToken,
AccessToken currentAccessToken) {
// Set the access token using
// currentAccessToken when it's loaded or set.
}
};
// If the access token is available already assign it.
accessToken = AccessToken.getCurrentAccessToken();
}
@Override
public View onCreateView(
LayoutInflater inflater,
ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.activity_login_with_fb, container,
false);
LoginButton loginButton=(LoginButton)view.findViewById(R.id.login_button);
loginButton.setReadPermissions("user_friends");
// Callback registration
loginButton.registerCallback(callbackManager,
new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
}
@Override
public void onCancel() {
}
@Override
public void onError(FacebookException e) {
}
});
return view;
}
}