android - How to Launch a select image activity -


am new android , have button when user clicks taps it, launches activity shows images in storage (both external , internal) in grid view them select few send them on network. have seen apps whatsapp implement this, ie, when want send video or photo contact, activity launched grid view showing these images. have managed implement part sending image, , question hence is, how implement such activity? there simple way launching gallery select images or something? or have code scratch? screenshot below show activity whatsapp

select image whatsapp activity


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