Question

我使用的是mikepenz材质抽屉库，无法在材质抽屉中添加标题。以下是我的代码

在gradle中我使用了这种依赖

compile('com.mikepenz:materialdrawer:4.0.0@aar') {
    transitive = true
}

然后在MainActivity.java中，我使用了相同的代码片段，如文档中所示。

AccountHeader headerresult = new AccountHeaderBuilder()
            .withActivity(this)
            .withHeaderBackground(R.drawable.sunlight_foundation)
            .addProfiles(
                    new ProfileDrawerItem().withName("Random Name").withEmail("random@gmail.com").withIcon(getResources().getDrawable(R.drawable.sunlight_foundation)),
            ).withOnAccountHeaderListener(new AccountHeader.OnAccountHeaderListener() {
                @Override
                public boolean onProfileChanged(View view, IProfile iProfile, boolean b) {
                    return false;

                }
            }).build();
//create the drawer and remember the `Drawer` result object
    final Drawer result = new DrawerBuilder()
            .withActivity(this)
            .withAccountHeader(headerresult)
            .withToolbar(toolbar)
            .build();

我收到了这个错误。

Process: com.example.rajni.congress, PID: 19041
                                                                        java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.rajni.congress/com.example.rajni.congress.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.mikepenz.materialdrawer.adapter.BaseDrawerAdapter.addHeaderDrawerItems(com.mikepenz.materialdrawer.model.interfaces.IDrawerItem[])' on a null object reference
                                                                            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2426)
                                                                            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2490)
                                                                            at android.app.ActivityThread.-wrap11(ActivityThread.java)
                                                                            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1354)
                                                                            at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                            at android.os.Looper.loop(Looper.java:148)
                                                                            at android.app.ActivityThread.main(ActivityThread.java:5443)
                                                                            at java.lang.reflect.Method.invoke(Native Method)
                                                                            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)
                                                                            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
                                                                         Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.mikepenz.materialdrawer.adapter.BaseDrawerAdapter.addHeaderDrawerItems(com.mikepenz.materialdrawer.model.interfaces.IDrawerItem[])' on a null object reference
                                                                            at com.mikepenz.materialdrawer.DrawerUtils.handleHeaderView(DrawerUtils.java:231)
                                                                            at com.mikepenz.materialdrawer.DrawerBuilder.createContent(DrawerBuilder.java:1446)
                                                                            at com.mikepenz.materialdrawer.DrawerBuilder.buildView(DrawerBuilder.java:1280)
                                                                            at com.mikepenz.materialdrawer.DrawerBuilder.build(DrawerBuilder.java:1152)
                                                                            at com.example.rajni.congress.MainActivity.onCreate(MainActivity.java:82)
                                                                            at android.app.Activity.performCreate(Activity.java:6259)
                                                                            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1130)
                                                                            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2379)
                                                                            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2490) 
                                                                            at android.app.ActivityThread.-wrap11(ActivityThread.java) 
                                                                            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1354) 
                                                                            at android.os.Handler.dispatchMessage(Handler.java:102) 
                                                                            at android.os.Looper.loop(Looper.java:148) 
                                                                            at android.app.ActivityThread.main(ActivityThread.java:5443) 
                                                                            at java.lang.reflect.Method.invoke(Native Method)

任何帮助都将受到高度赞赏。提前谢谢。

Answer 1

创建headerresult后尝试将配置文件设置为活动配置文件。

像这样：

headerresult.setActiveProfile(headerResult.getProfiles().get(0));

无法在mikepenz素材抽屉

1 个答案: