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如何禁止使用bottomsheetdialogfragment拖动? [复制链接]

2017-12-7 12:02
一人无 阅读:143 评论:0 赞:0
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myactivity代码如下:

 public class MyActivity extends AppCompatActivity {

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

            new MyBottomSheetFragment().show(getSupportFragmentManager(), "tag");
        }

        public static class MyBottomSheetFragment extends BottomSheetDialogFragment {

            @Override
            public Dialog onCreateDialog(Bundle savedInstanceState) {
                BottomSheetDialog bottomSheetDialog = (BottomSheetDialog) super.onCreateDialog(savedInstanceState);
                bottomSheetDialog.setContentView(R.layout.sample);

                try {
                    Field mBehaviorField = bottomSheetDialog.getClass().getDeclaredField("mBehavior");
                    mBehaviorField.setAccessible(true);
                    final BottomSheetBehavior behavior = (BottomSheetBehavior) mBehaviorField.get(bottomSheetDialog);
                    behavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {
                        @Override
                        public void onStateChanged(@NonNull View bottomSheet, int newState) {
                            if (newState == BottomSheetBehavior.STATE_DRAGGING) {
                                behavior.setState(BottomSheetBehavior.STATE_EXPANDED);
                            }
                        }

                        @Override
                        public void onSlide(@NonNull View bottomSheet, float slideOffset) {
                        }
                    });
                } catch (NoSuchFieldException e) {
                    e.printStackTrace();
                } catch (IllegalAccessException e) {
                    e.printStackTrace();
                }

                return bottomSheetDialog;
            }
        }
    }

这个地方的r.layout.sample是一个简单的布局:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <View
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:background="#e479da" />

    <View
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:background="#798de4" />

    <View
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:background="#e4db79" />

</LinearLayout>

你会得到下面的输出:
图片描述

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