底部弹出 DialogFragment + 与 Activity 数据交互

实现步骤特别简单:

1.新建DialogFragment类,在OnCreateView中返回你自定义的view.

public class ADDialogFragment extends DialogFragment{ @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { //加这句话去掉自带的标题栏 getDialog().requestWindowFeature(Window.FEATURE_NO_TITLE); View view = inflater.inflate(R.layout.dialogfragment_person, null); //init(view); return view; }}

自定义dialogfragment_person的布局文件如下:

xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:background="@color/white" android:layout_height="match_parent" android:orientation="vertical"> <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="15.5dp" android:gravity="center_horizontal" android:text="请选择" android:textColor="#666666" android:textSize="16sp"/> <TextView android:id="@+id/tv1" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="16.5dp" android:gravity="center_horizontal" android:text="1人" android:textColor="#333333" android:textSize="18sp"/> <TextView android:id="@+id/tv2" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="16.5dp" android:gravity="center_horizontal" android:text="2人" android:textColor="#333333" android:textSize="18sp"/> <TextView android:id="@+id/tv3" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="16.5dp" android:gravity="center_horizontal" android:text="3人" android:textColor="#333333" android:textSize="18sp"/> <TextView android:id="@+id/tv4" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="16.5dp" android:layout_marginBottom="16.5dp" android:gravity="center_horizontal" android:text="4人" android:textColor="#333333" android:textSize="18sp"/> LinearLayout>

在MainActivity的Button(或ImageView或其他)的点击事件中作如下处理即可弹出dialogfragment:

ADDialogFragment dialogFragment = new ADDialogFragment();
dialogFragment.show(getFragmentManager(),"android");

ok了,这时你会发现它显示在页面中央,但是我们想让dialogfragment显示到页面底部,那么只需在DialogFragment中添加如下代码即可:

@Overridepublic void onStart() { super.onStart(); Window window = getDialog().getWindow(); WindowManager.LayoutParams params = window.getAttributes(); params.gravity = Gravity.BOTTOM; params.width = WindowManager.LayoutParams.MATCH_PARENT; window.setAttributes(params); //设置背景透明 window.setBackgroundDrawable( new ColorDrawable(Color.TRANSPARENT));}

最后一步:传递数据到MainActivity中:

在dialogfragment中:

public interface OnDialogListener { void onDialogClick(String person);} public void setOnDialogListener(OnDialogListener dialogListener){ this.mlistener = dialogListener;}

在Textview的点击事件中:

public OnDialogListener mlistener;
@Override
public void onClick(View view) {
    switch (view.getId()) {
        case R.id.tv1:
            mlistener.onDialogClick("1");
            dismiss();
            break; 
       case R.id.tv2:
            mlistener.onDialogClick("2");
            dismiss();
            break;
        case R.id.tv3:
            mlistener.onDialogClick("3");
            dismiss();
            break;
        case R.id.tv4:
            mlistener.onDialogClick("4");
            dismiss();
            break;
    }
}

在MainActivity中实现此接口即可:

dialogFragment.setOnDialogListener(new PersonDialogFragment.OnDialogListener() {
    @Override
    public void onDialogClick(String person) {
        ToastUtil.showToast(person);
    }
});