我的github存储库是:
https://github.com/lalith26/react-native-fb-login-android
我做了以下事情:
>我为LoginButton facebook小部件创建了Manager:
>我创建了一个扩展MainReactPackage的ReactPackage:
>我在MainActivity中添加了新的ReactPackage:
>我包含了facebook登录sdk的gradle依赖
https://github.com/lalith26/react-native-fb-login-android/blob/master/android/app/build.gradle#L28
>我使JS组件包装了Native组件:
https://github.com/lalith26/react-native-fb-login-android/blob/master/fblogin.js
>最后我使用了JS组件:
https://github.com/lalith26/react-native-fb-login-android/blob/master/index.android.js#L21
我通过网络阅读并发现必须传递propTypes.我也试过了.但应用程序在启动时崩溃了.我无法看到任何日志.所以,我无法找到问题的实际原因.
我为一个按钮尝试了相同的一组步骤,它工作正常.
有什么我只是做错了.请帮忙..
我通过logcat访问了模拟器的日志.表明:
E/AndroidRuntime( 2550): Process: com.fbloginbutton2,PID: 2550
E/AndroidRuntime( 2550): java.lang.ExceptionInInitializerError
E/AndroidRuntime( 2550): at
com.fbloginbutton2.FBLoginButtonManager.createViewInstance(FBLoginButtonManager.java:29)
E/AndroidRuntime( 2550): at
com.fbloginbutton2.FBLoginButtonManager.createViewInstance(FBLoginButtonManager.java:15)
E/AndroidRuntime( 2550): at
com.facebook.react.uimanager.ViewManager.createView(ViewManager.java:41)
E/AndroidRuntime( 2550): at
com.facebook.react.uimanager.NativeViewHierarchyManager.createView(NativeViewHierarchyManager.java:172)
E/AndroidRuntime( 2550): at
com.facebook.react.uimanager.UIViewOperationQueue$CreateViewOperation.execute(UIViewOperationQueue.java:137)
E/AndroidRuntime( 2550): at
com.facebook.react.uimanager.UIViewOperationQueue$1.run(UIViewOperationQueue.java:574)
E/AndroidRuntime( 2550): at
com.facebook.react.uimanager.UIViewOperationQueue$DispatchUIFrameCallback.doFrameGuarded(UIViewOperationQueue.java:622)
E/AndroidRuntime( 2550): at
com.facebook.react.uimanager.GuardedChoreographerFrameCallback.doFrame(GuardedChoreographerFrameCallback.java:32)
E/AndroidRuntime( 2550): at
com.facebook.react.uimanager.ReactChoreographer$ReactChoreographerDispatcher.doFrame(ReactChoreographer.java:114)
E/AndroidRuntime( 2550): at
android.view.Choreographer$CallbackRecord.run(Choreographer.java:765)
E/AndroidRuntime( 2550): at
android.view.Choreographer.doCallbacks(Choreographer.java:580)
E/AndroidRuntime( 2550): at
android.view.Choreographer.doFrame(Choreographer.java:549)
E/AndroidRuntime( 2550): at
android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
E/AndroidRuntime( 2550): at
android.os.Handler.handleCallback(Handler.java:739) E/AndroidRuntime(
2550): at android.os.Handler.dispatchMessage(Handler.java:95)
E/AndroidRuntime( 2550): at android.os.Looper.loop(Looper.java:135)
E/AndroidRuntime( 2550): at
android.app.ActivityThread.main(ActivityThread.java:5221)
E/AndroidRuntime( 2550): at java.lang.reflect.Method.invoke(Native
Method) E/AndroidRuntime( 2550): at
java.lang.reflect.Method.invoke(Method.java:372) E/AndroidRuntime(
2550): at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
E/AndroidRuntime( 2550): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
E/AndroidRuntime( 2550): Caused by: null E/AndroidRuntime( 2550): at
com.facebook.internal.Validate.sdkInitialized(Validate.java:99)
E/AndroidRuntime( 2550): at
com.facebook.FacebookSdk.getCallbackRequestCodeOffset(FacebookSdk.java:735)
E/AndroidRuntime( 2550): at
com.facebook.internal.CallbackManagerImpl$RequestCodeOffset.toRequestCode(CallbackManagerImpl.java:109)
E/AndroidRuntime( 2550): at
com.facebook.login.widget.LoginButton.(LoginButton.java:58)
E/AndroidRuntime( 2550): … 21 more W/ActivityManager( 1327):
Force finishing activity com.fbloginbutton2/.MainActivity
E/EGL_emulation( 1373): tid 1373: eglCreateSyncKHR(1181): error 0x3004
(EGL_BAD_ATTRIBUTE)
KenBurnsViewManager.Java:
- import com.flaviofaria.kenburnsview.KenBurnsView;
- import com.facebook.react.uimanager.SimpleViewManager;
- import com.facebook.react.uimanager.ThemedReactContext;
- import com.facebook.react.uimanager.ReactProp;
- import java.io.InputStream;
- import android.graphics.drawable.Drawable;
- import android.util.Log;
- public class KenBurnsViewManager extends SimpleViewManager<KenBurnsView> {
- public static final String REACT_CLASS = "KenBurnsView";
- private ThemedReactContext ctx;
- @Override
- public String getName() {
- return REACT_CLASS;
- }
- @Override
- protected KenBurnsView createViewInstance(ThemedReactContext context) {
- ctx = context;
- return new KenBurnsView(context);
- }
- @ReactProp(name = "source")
- public void setSource(KenBurnsView view,String source) {
- try {
- InputStream ims = ctx.getAssets().open("images/" + source);
- Drawable d = Drawable.createFromStream(ims,null);
- view.setImageDrawable(d);
- } catch (Exception ex) {
- Log.e("KenBurnsView","setSource",ex);
- }
- }
- }
KenBurnsViewPackage.Java:
- import com.facebook.react.ReactPackage;
- import com.facebook.react.bridge.JavaScriptModule;
- import com.facebook.react.bridge.NativeModule;
- import com.facebook.react.bridge.ReactApplicationContext;
- import com.facebook.react.uimanager.ViewManager;
- import java.util.Collections;
- import java.util.List;
- import java.util.Arrays;
- import java.util.ArrayList;
- public class KenBurnsViewPackage implements ReactPackage {
- @Override
- public List<NativeModule> createNativeModules(
- ReactApplicationContext reactContext) {
- List<NativeModule> modules = new ArrayList<>();
- return modules;
- }
- @Override
- public List<ViewManager> createViewManagers(
- ReactApplicationContext reactContext) {
- return Arrays.<ViewManager>asList(
- new KenBurnsViewManager()
- );
- }
- @Override
- public List<Class<? extends JavaScriptModule>> createJSModules() {
- return Collections.emptyList();
- }
- }
更新MainActivity.Java:
- mReactInstanceManager = ReactInstanceManager.builder()
- .setApplication(getApplication())
- .setBundleAssetName("index.android.bundle")
- .setJSMainModuleName("index.android")
- .addPackage(new MainReactPackage())
- .addPackage(new KenBurnsViewPackage()) // <- add package
- .setUseDeveloperSupport(BuildConfig.DEBUG)
- .setInitialLifecycleState(LifecycleState.RESUMED)
- .build();
更新android / app / build.gradle:
- dependencies {
- compile fileTree(dir: "libs",include: ["*.jar"])
- compile "com.android.support:appcompat-v7:23.0.1"
- compile "com.facebook.react:react-native:0.16.+"
- compile "com.flaviofaria:kenburnsview:1.0.6"
- }
KenBurnsView.js:
- var { requireNativeComponent,PropTypes,View } = require('react-native');
- var iface = {
- propTypes: {
- ...View.propTypes,source: PropTypes.string,},};
- module.exports = requireNativeComponent('KenBurnsView',iface);
就是这样,现在你可以添加新的自定义KenBurnsView组件,例如:
- var KenBurnsView = require('./KenBurnsView');
- .
- .
- .
- <KenBurnsView source={'image.jpg'} style={{width:null,height: 300}}/>