相关疑难解决方法(0)

当我点击按钮时,我试图显示小吃栏视图但是当我点击按钮时它显示强制关闭错误

我在下面定义了片段类,还有错误日志.

我有片段类:

public class HomeFragment extends Fragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.fragment_home, container, false);
        context = getActivity();
        initUI(rootView);
        return rootView;
    }

    private void initUI(View view) {

        btn= (Button) view.findViewById(R.id.btnpress);
        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Snackbar.make(getView(),"SnackBAr Test" , Snackbar.LENGTH_LONG).show();
            }
        });
    }

fragment_home.xml:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:id="@+id/mainrl"
    android:layout_height="match_parent">

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:orientation="horizontal"
        android:paddingBottom="40dp" >

            <Button
            android:id="@+id/btn"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:Text="PLEASE …

我正在开发一个Android应用程序.在那我想在对话框中显示材料设计Snackbar.可能吗？如果是,那怎么样？

请帮我.

谢谢.

我继承BaseActivity了所有其他活动.

public class BaseActivity extends AppCompatActivity {

    public static CoordinatorLayout coordinatorLayout;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_base);
        coordinatorLayout = (CoordinatorLayout) findViewById(R.id
                .coordinatorLayout1);
    }
}

activity_base.xml

<?xml version="1.0" encoding="utf-8"?>

<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/coordinatorLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context="com.example.Activity.BaseActivity"> 
</android.support.design.widget.CoordinatorLayout>

尝试从非活动类访问时不显示Snackbar.

Snackbar snackbar = Snackbar.make(
        BaseActivity.coordinatorLayout,
        "Helooo....",
        Snackbar.LENGTH_LONG
);