自定义DialogFragment实现复杂Dialog

What

一种更加灵活的Dialog

Why

谷歌推荐，但是有时不能够满足需求，比如定制边距，突出关闭按钮，当然你也可以使用Dialog形式的Activity

目标效果：

How

1. 继承DialogFragment并重写onCreateDialog方法

public abstract class AbstractCustomDialogFragment extends DialogFragment{    @NonNull    @Override    public Dialog onCreateDialog(Bundle savedInstanceState) {        Dialog alertDialog = new Dialog(getContext());        alertDialog.requestWindowFeature(Window.FEATURE_NO_TITLE);        View customView = onCreateDialogView();        alertDialog.setContentView(customView);        alertDialog.setCanceledOnTouchOutside(false);        alertDialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));        WindowManager.LayoutParams windowParams = alertDialog.getWindow().getAttributes();        windowParams.width = (int) (getResources().getDisplayMetrics().widthPixels -                        getResources().getDisplayMetrics().density * 20);        alertDialog.getWindow().setAttributes(windowParams);        return alertDialog;    }    //提供接口用来获取Dialog样式    public abstract View onCreateDialogView();}

2.继承AbstractCustomDialogFragment，重写onCreateDialogView方法

public class MyDialogFragment extends AbstractCustomDialogFragment {    private View mView;    @Override    public View onCreateDialogView() {        mView = LayoutInflater.from(getContext()).inflate(R.layout.fragment_my_dialog, null);        mView.findViewById(R.id.imageView).setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                dismiss();            }        });        return mView;    }}

3.在调用的地方调用

MyDialogFragment dialogFragment = new MyDialogFragment();dialogFragment.show(getSupportFragmentManager(), "FirstDialog");

4.对应的fragment_my_dialog.xml文件

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:background="@android:color/transparent"    tools:context="study.ung.maitamaresearch.dialogs.MyDialogFragment">    <RelativeLayout        android:layout_width="match_parent"        android:layout_height="match_parent"        android:layout_margin="@dimen/margin_10dp"        android:background="@color/transparent">        <TextView            android:layout_width="match_parent"            android:layout_height="match_parent"            android:gravity="center"            android:text="@string/hello_blank_fragment" />    </RelativeLayout>    <ImageView        android:id="@+id/imageView"        android:layout_width="30dp"        android:layout_height="30dp"        android:layout_alignParentRight="true"        android:layout_alignParentTop="true"        android:src="@drawable/close" /></RelativeLayout>