Java 如何向Whatsapp联系人发送图像

有人知道我如何将图像发送到Android Studio中的特定Whatsapp联系人吗

我正在使用此代码选择联系人-

btn_choose.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            new MultiContactPicker.Builder(MainActivity.this) //Activity/fragment context
                    .hideScrollbar(false) //Optional - default: false
                    .showTrack(true) //Optional - default: true
                    .searchIconColor(Color.WHITE) //Option - default: White
                    .setChoiceMode(MultiContactPicker.CHOICE_MODE_MULTIPLE) //Optional - default: CHOICE_MODE_MULTIPLE
                    .handleColor(ContextCompat.getColor(MainActivity.this, R.color.design_default_color_primary)) //Optional - default: Azure Blue
                    .bubbleColor(ContextCompat.getColor(MainActivity.this, R.color.design_default_color_primary)) //Optional - default: Azure Blue
                    .bubbleTextColor(Color.WHITE) //Optional - default: White
                    .setTitleText("Select Contacts") //Optional - default: Select Contacts
                    .setLoadingType(MultiContactPicker.LOAD_ASYNC) //Optional - default LOAD_ASYNC (wait till all loaded vs stream results)
                    .limitToColumn(LimitColumn.NONE) //Optional - default NONE (Include phone + email, limiting to one can improve loading time)
                    .setActivityAnimations(android.R.anim.fade_in, android.R.anim.fade_out,
                            android.R.anim.fade_in,
                            android.R.anim.fade_out) //Optional - default: No animation overrides
                    .showPickerForResult(CONTACT_PICKER_REQUEST);
        }
    });