screenshot

Realization

1,BasePopupWindow.java

1.1. Realize dynamic loading of different layout s
1.2. Whether the background is translucent after the dynamic configuration is popped up and restored when it is closed (monitor ondismiss and use the window class to change color)
1.3. Some basic method abstraction methods
1.4. For more complex styles and dynamic effects, you can continue to expand this type

/**
 * Created by wujn on 2018/10/29.
 * Version : v1.0
 * Function: base popuwindow
 */
public abstract class BasePopupWindow extends PopupWindow implements View.OnClickListener{

    /**
     * context
     */
    private Context context;
    /**
     * Top most background view
     */
    private View vBgBasePicker;
    /**
     * Content viewgroup
     */
    private LinearLayout llBaseContentPicker;

    public BasePopupWindow(Context context) {
        super(context);
        this.context = context;
        View parentView = View.inflate(context, R.layout.base_popup_window_picker, null);
        vBgBasePicker = parentView.findViewById(R.id.v_bg_base_picker);
        llBaseContentPicker = (LinearLayout) parentView.findViewById(R.id.ll_base_content_picker);
        /***
         * Add layout to interface
         */
        llBaseContentPicker.addView(View.inflate(context, bindLayout(), null));
        setContentView(parentView);
        //Set the width of the PopupWindow pop-up
        this.setWidth(ViewGroup.LayoutParams.MATCH_PARENT);
        //Set PopupWindow pop-up height
        this.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT);
        //Add the following code in the PopupWindow, so that the pop-up window will not be blocked when the keyboard pops up.
        this.setInputMethodMode(PopupWindow.INPUT_METHOD_NEEDED);
        this.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
        setFocusable(true);//Set get focus
        setTouchable(true);//Settings can be touched
        setOutsideTouchable(true);//Set the outside to click
        ColorDrawable dw = new ColorDrawable(0xffffff);
        setBackgroundDrawable(dw);
        //Animating the SelectPicPopupWindow pop-up
        this.setAnimationStyle(R.style.BottomDialogWindowAnim);
        initView(parentView);
        initListener();
        initData();
        vBgBasePicker.setOnClickListener(this);
        //Need screen translucency
        setBackgroundHalfTransition(isNeedBackgroundHalfTransition());
    }

    /**
     * Initialize layout
     *
     * @return
     */
    protected abstract int bindLayout();

    /**
     * Initialize view
     *
     * @param parentView
     */
    protected abstract void initView(View parentView);

    /**
     * Initialization data
     */
    protected abstract void initData();

    /**
     * Initialize listening
     */
    protected abstract void initListener();





    /**
     * In order to adapt to the above display problems of 7.0 system (displayed at the bottom of the control)
     *
     * @param anchor
     */
    @Override
    public void showAsDropDown(View anchor) {
        if (Build.VERSION.SDK_INT >= 24) {
            Rect rect = new Rect();
            anchor.getGlobalVisibleRect(rect);
            int h = anchor.getResources().getDisplayMetrics().heightPixels - rect.bottom;
            setHeight(h);
        }
        super.showAsDropDown(anchor);
        if(isNeedBgHalfTrans){
            backgroundAlpha(0.5f);
        }
    }

    /**
     * Display at the bottom of the screen
     *
     * @param layoutid rootview
     */
    public void showAtLocation(@LayoutRes int layoutid) {
        showAtLocation(LayoutInflater.from(context).inflate(layoutid, null),
                Gravity.TOP | Gravity.CENTER_HORIZONTAL, 0, 0);
        if(isNeedBgHalfTrans){
            backgroundAlpha(0.5f);
        }
    }


    /**
     * Top view click event monitoring
     *
     * @param v
     */
    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.v_bg_base_picker:
                dismiss();
                break;
        }
    }

    /**
     * Whether to set background translucency
     * */
    public boolean isNeedBackgroundHalfTransition(){
        return false;
    }

    private boolean isNeedBgHalfTrans = false;
    private void setBackgroundHalfTransition(boolean isNeed){
        isNeedBgHalfTrans = isNeed;
        if(isNeedBgHalfTrans){
            this.setOnDismissListener(new OnDismissListener() {
                @Override
                public void onDismiss() {
                    backgroundAlpha(1f);
                }
            });
        }
    }

    /**
     * Set the background transparency of the add screen
     * @param bgAlpha
     */
    private void backgroundAlpha(float bgAlpha) {
        WindowManager.LayoutParams lp = ((Activity)context).getWindow().getAttributes();
        lp.alpha = bgAlpha; //0.0-1.0
        ((Activity)context).getWindow().setAttributes(lp);
    }


}

2,base_popup_window_picker.xml

<?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="match_parent"
    android:orientation="vertical">

    <View
        android:id="@+id/v_bg_base_picker"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1" />

    <LinearLayout
        android:id="@+id/ll_base_content_picker"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:orientation="vertical" />
</LinearLayout>

3. Animation style when entering and exiting

<!--animanation-->
    <!-- Bottom dialog Pop up animation style-->
    <style name="BottomDialogWindowAnim" parent="android:Animation">
        <item name="android:windowEnterAnimation">@anim/popup_bottom_enter_anim</item>
        <item name="android:windowExitAnimation">@anim/popup_bottom_exit_anim</item>
    </style>

Enter the animation: pop? Bottom? Enter? Anim.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >
    <translate
        android:duration="200"
        android:fromYDelta="100%p"
        android:toYDelta="0" />
    <alpha
        android:duration="200"
        android:fromAlpha="0.0"
        android:toAlpha="1.0" />
</set>

Exit Animation: pop? Bottom? Exit? Anim.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <translate
        android:duration="200"
        android:fromYDelta="0"
        android:toYDelta="50%p" />
    <alpha
        android:duration="200"
        android:fromAlpha="1.0"
        android:toAlpha="0.0" />

</set>

4. layout imitating IOS: pop > Window > album > or > camera.xml

<?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="match_parent"
    android:orientation="vertical"
    android:padding="10dp">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/bg_shape_corner_white"
        android:orientation="vertical">

        <Button
            android:id="@+id/btnCamera"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@null"
            android:text="Photograph"
            android:textColor="@color/dodgerblue"
            android:textSize="@dimen/normal_text_size" />

        <View
            android:layout_width="match_parent"
            android:layout_height="1dp"
            android:background="@color/gray_1" />


        <Button
            android:id="@+id/btnAlbum"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@null"
            android:text="Choose from album"
            android:textColor="@color/dodgerblue"
            android:textSize="@dimen/normal_text_size" />
    </LinearLayout>


    <LinearLayout
        android:layout_marginTop="10dp"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/bg_shape_corner_white"
        android:orientation="vertical">

        <Button
            android:id="@+id/btnCancel"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@null"
            android:text="@string/cancel"
            android:textColor="@color/dodgerblue"
            android:textSize="@dimen/normal_text_size" />

    </LinearLayout>

</LinearLayout>

Background style of item

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="@color/white" />
    <corners android:radius="6dp"/>
    <stroke android:width="1dp" android:color="@color/gray_1" />
</shape>

5. popuwindow class imitating IOS: albumorcamerapapopupwindow

public class AlbumOrCameraPopupWindow extends BasePopupWindow {

    private Button btnCamera;
    private Button btnAlbum;
    private Button btnCancel;

    private OnCameraOrAlbumSelectListener onCameraOrAlbumSelectListener;
    public AlbumOrCameraPopupWindow(Context context,OnCameraOrAlbumSelectListener onCameraOrAlbumSelectListener) {
        super(context);
        this.onCameraOrAlbumSelectListener = onCameraOrAlbumSelectListener;
    }

    @Override
    public boolean isNeedBackgroundHalfTransition(){
        return true;
    }

    @Override
    protected int bindLayout() {
        return R.layout.popup_window_album_or_camera;
    }

    @Override
    protected void initView(View parentView) {
        btnCamera = (Button) parentView.findViewById(R.id.btnCamera);
        btnAlbum = (Button) parentView.findViewById(R.id.btnAlbum);
        btnCancel = (Button) parentView.findViewById(R.id.btnCancel);
    }

    @Override
    protected void initData() {

    }

    @Override
    protected void initListener() {
        btnCamera.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dismiss();
                if(onCameraOrAlbumSelectListener != null){
                    onCameraOrAlbumSelectListener.OnSelectCamera();
                }
            }
        });

        btnAlbum.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dismiss();
                if(onCameraOrAlbumSelectListener != null){
                    onCameraOrAlbumSelectListener.OnSelectAlbum();
                }
            }
        });

        btnCancel.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dismiss();
            }
        });
    }

}

Select monitor interface of camera or album

public interface OnCameraOrAlbumSelectListener {
    public void OnSelectCamera();
    public void OnSelectAlbum();
}

6. Specific use

private AlbumOrCameraPopupWindow ACWindow;
    private void initListener(){
        ACWindow = new AlbumOrCameraPopupWindow(this, onCameraOrAlbumSelectListener);
        btnIosPopupWindow.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if(ACWindow != null && !ACWindow.isShowing()){
                    ACWindow.showAtLocation(R.layout.activity_view_popup_window);
                }
            }
        });
    }

    /**Choose a camera or album*/
    private OnCameraOrAlbumSelectListener onCameraOrAlbumSelectListener = new OnCameraOrAlbumSelectListener() {
        @Override
        public void OnSelectCamera() {
            LogUtil.i("OnSelectCamera...");
            ToastUtil.showShort(instance, "camera");
        }

        @Override
        public void OnSelectAlbum() {
            LogUtil.i("OnSelectAlbum...");
            ToastUtil.showShort(instance, "Choose from album");
        }
    };

Further to CV Engineer~~~