【移動(dòng)應(yīng)用開發(fā)技術(shù)】Android中怎么實(shí)現(xiàn)微信朋友圈拍照上傳功能

Android中怎么實(shí)現(xiàn)微信朋友圈拍照上傳功能，相信很多沒有經(jīng)驗(yàn)的人對此束手無策，為此本文總結(jié)了問題出現(xiàn)的原因和解決方法，通過這篇文章希望你能解決這個(gè)問題。1.PhotoPicker的使用這是一個(gè)支持選擇多張圖片，點(diǎn)擊圖片放大，圖片之間左右滑動(dòng)互相切換的庫，同時(shí)支持圖片刪除的庫，效果類似微信。(1)添加PhotoPicker的架包(2)使用

選擇圖片：安卓6.0以后需要在代碼中添加讀寫sd卡和相機(jī)的權(quán)限當(dāng)然清單文件中也需要添加的

PhotoPicker.builder()

.setPhotoCount(maxPhoto)

//設(shè)置最多選擇的圖片數(shù)量

.setShowCamera(true)

//是否顯示相機(jī)按鈕

.setSelected(photos)

//設(shè)置已經(jīng)選好的圖片

.start(SendDynamicActivity.this);

//上下文參數(shù)

需要傳activity

查看圖片:PhotoPreview.builder()

.setPhotos(photos)

//設(shè)置選擇好的圖片

.setCurrentItem(position)

//設(shè)置當(dāng)前選擇的條目

.setShowDeleteButton(true)

//是否顯示刪除按鈕

.start(this);2.發(fā)布朋友圈頁面代碼比較簡單直接上package

com.zlc.friendcirclephoto.ui;

import

android.Manifest;

import

android.content.Intent;

import

android.os.Bundle;

import

android.support.v7.widget.RecyclerView;

import

android.support.v7.widget.StaggeredGridLayoutManager;

import

android.support.v7.widget.helper.ItemTouchHelper;

import

android.text.InputFilter;

import

android.view.View;

import

android.widget.ImageView;

import

android.widget.TextView;

import

com.mylhyl.acp.Acp;

import

com.mylhyl.acp.AcpListener;

import

com.mylhyl.acp.AcpOptions;

import

com.zlc.friendcirclephoto.adapter.MyItemTouchHelperCallback;

import

com.zlc.friendcirclephoto.adapter.SendImageAdapter;

import

com.zlc.friendcirclephoto.view.CommonEditText;

import

com.zlc.friendcirclephoto.R;

import

com.zlc.friendcirclephoto.utils.LogUtil;

import

java.util.ArrayList;

import

java.util.Collections;

import

java.util.List;

import

me.iwf.photopicker.PhotoPicker;

import

me.iwf.photopicker.PhotoPreview;

/**

*

Created

by

zlc

*

發(fā)布朋友圈

*/

public

class

SendDynamicActivity

extends

BaseActivity

implements

View.OnClickListener,SendImageAdapter.OnClickListener{

private

ImageView

im_fanhui;

private

TextView

tv_title;

private

CommonEditText

id_et_content;

private

TextView

id_tv_num;

private

TextView

id_tv_max_num;

private

SendImageAdapter

mPhotoAdapter;

public

static

final

int

maxPhoto

=

9;

//最大選擇幾張照片

private

List<Object>

images

=

new

ArrayList<>();

private

ArrayList<String>

photos

=

new

ArrayList<>();

private

RecyclerView

mRecycleView;

@Override

protected

void

onCreate(Bundle

savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_send_note);

initView();

initData();

initListener();

}

private

void

initView()

{

im_fanhui

=

findView(R.id.id_iv_back);

tv_title

=

findView(R.id.id_tv_title);

tv_title.setText("發(fā)布");

id_et_content

=

findView(R.id.id_common_et);

mRecycleView

=

findView(R.id.id_recycleview);

id_tv_num

=

findView(R.id.tv_num);

id_tv_max_num

=

findView(R.id.id_tv_max_num);

id_et_content.setHint("這一刻的想法");

id_tv_num.setText("0");

id_tv_max_num.setText("/188");

id_et_content.setFilters(new

InputFilter[]{new

InputFilter.LengthFilter(188)});

}

private

void

initData()

{

images.add(1);

mRecycleView.setLayoutManager(new

StaggeredGridLayoutManager(3,StaggeredGridLayoutManager.VERTICAL));

mPhotoAdapter

=

new

SendImageAdapter(SendDynamicActivity.this,

images);

mRecycleView.setAdapter(mPhotoAdapter);

mPhotoAdapter.setOnClickListener(this);

MyItemTouchHelperCallback

callBack

=

new

MyItemTouchHelperCallback(mPhotoAdapter);

//實(shí)現(xiàn)拖拽排序

final

ItemTouchHelper

touchHelper

=

new

ItemTouchHelper(callBack);

//調(diào)用ItemTouchHelper的attachToRecyclerView方法建立聯(lián)系

touchHelper.attachToRecyclerView(mRecycleView);

}

private

void

initListener()

{

im_fanhui.setOnClickListener(this);

id_et_content.setOnTextChaged(new

CommonEditText.OnTextChaged()

{

@Override

public

void

setText(String

s)

{

id_tv_num.setText(s.length()+"");

}

});

}

@Override

public

void

onClick(View

v)

{

switch

(v.getId()){

case

R.id.id_iv_back:

finish();

break;

}

}

@Override

protected

void

onActivityResult(int

requestCode,

int

resultCode,

Intent

data)

{

super.onActivityResult(requestCode,

resultCode,

data);

if

(resultCode

==

RESULT_OK

&&

(requestCode

==

PhotoPicker.REQUEST_CODE

||

requestCode

==

PhotoPreview.REQUEST_CODE))

{

List<String>

photos

=

null;

if

(data

!=

null)

{

photos

=

data.getStringArrayListExtra(PhotoPicker.KEY_SELECTED_PHOTOS);

}

if

(photos

!=

null)

{

clearPhotoS(photos.size());

images.addAll(images.size()-1,photos);

mPhotoAdapter.notifyDataSetChanged();

}

}

}

@Override

public

void

onClick(View

v,

int

position)

{

switch

(v.getId()){

case

R.id.iv_add:

selectPhoto();

break;

case

R.id.im_delete:

delImages(position);

break;

case

R.id.iv_img:

lookPhoto(position);

break;

}

}

public

void

delImages(int

position){

images.remove(position);

if(mPhotoAdapter!=null)

mPhotoAdapter.notifyItemRemoved(position);

}

public

void

clearPhotoS(int

size){

LogUtil.e("返回有幾張照片",size+"");

images.clear();

images.add(1);

}

//選擇圖片

private

void

selectPhoto()

{

List<Object>

images

=

mPhotoAdapter.getDatas();

photos.clear();

for

(int

i

=

0;i<

images.size()-1;i++

){

photos.add(images.get(i).toString());

}

//權(quán)限

Acp.getInstance(this).request(new

AcpOptions.Builder()

.setPermissions(

Manifest.permission.WRITE_EXTERNAL_STORAGE,

Manifest.permission.CAMERA,

Manifest.permission.READ_EXTERNAL_STORAGE

)

.build(),

new

AcpListener()

{

@Override

public

void

onGranted()

{

LogUtil.e("msg",

"權(quán)限外全部通過");

PhotoPicker.builder()

.setPhotoCount(maxPhoto)

.setShowCamera(true)

.setSelected(photos)

.start(SendDynamicActivity.this);

}

@Override

public

void

onDenied(List<String>

permissions)

{

LogUtil.e(permissions.toString()

,"權(quán)限拒絕");

}

});

}

//查看圖片

private

void

lookPhoto(int

position){

photos.clear();

List<Object>

images

=

mPhotoAdapter.getDatas();

for

(int

i

=

0;i<

images.size()-1;i++

){

photos.add(images.get(i).toString());

}

PhotoPreview.builder()

.setPhotos(photos)

.setCurrentItem(position)

.setShowDeleteButton(true)

//是否顯示刪除按鈕

.start(this);

}

}3.圖片適配器代碼public

class

SendImageAdapter

extends

RecyclerView.Adapter<SendImageAdapter.ViewHolder>

implements

ItemTouchHelperAdapter{

private

Activity

mContext;

private

List<Object>

mDatas;

private

LayoutInflater

mLayoutInflater;

public

SendImageAdapter(Activity

context,List<Object>

datas){

this.mContext

=

context;

this.mDatas

=

datas;

mLayoutInflater

=

LayoutInflater.from(context);

}

@Override

public

SendImageAdapter.ViewHolder

onCreateViewHolder(ViewGroup

parent,

int

viewType)

{

View

view

=

mLayoutInflater.inflate(R.layout.send_grid_item,parent,false);

return

new

ViewHolder(view);

}

@Override

public

void

onBindViewHolder(final

SendImageAdapter.ViewHolder

viewHolder,

final

int

position)

{

Object

image

=

mDatas.get(position);

LinearLayout.LayoutParams

params

=

(LinearLayout.LayoutParams)

viewHolder.id_rl_img.getLayoutParams();

int

w

=

params.width

=

(int)

((ScreenUtil.getScreenWidth(mContext)

-

DensityUtil.dp2px(mContext,38))

/

3.0);

params.height

=

w;

params.bottomMargin

=

DensityUtil.dp2px(mContext,7);

params.rightMargin

=

DensityUtil.dp2px(mContext,7);

viewHolder.id_rl_img.setLayoutParams(params);

if

(image

instanceof

String)

{

viewHolder.im_delete.setVisibility(View.VISIBLE);

viewHolder.iv_add.setVisibility(View.GONE);

viewHolder.im_img.setVisibility(View.VISIBLE);

//這里最好使用glide

Picasso加載本地圖片

bitmap容易造成內(nèi)存溢出

Bitmap

bitmap

=

BitmapFactory.decodeFile(image.toString());

viewHolder.im_img.setImageBitmap(bitmap);

LogUtil.e("手機(jī)照片",

image.toString());

}

else

{

viewHolder.im_delete.setVisibility(View.INVISIBLE);

viewHolder.iv_add.setVisibility(View.VISIBLE);

viewHolder.im_img.setVisibility(View.GONE);

viewHolder.iv_add.setImageResource(R.drawable.tupiantianjia2x);

LogUtil.e("添加照片",

""+image);

}

viewHolder.iv_add.setOnClickListener(new

MyClickListener(viewHolder));

viewHolder.im_img.setOnClickListener(new

MyClickListener(viewHolder));

viewHolder.im_delete.setOnClickListener(new

MyClickListener(viewHolder));

}

@Override

public

int

getItemCount()

{

if(mDatas

==

null){

return

0;

}

return

mDatas.size()

>=

9

?

9

:

mDatas.size();

}

public

List<Object>

getDatas()

{

return

mDatas;

}

public

static

class

ViewHolder

extends

RecyclerView.ViewHolder{

private

final

ImageView

im_img;

private

final

ImageView

iv_add;

private

final

ImageView

im_delete;

private

final

FrameLayout

id_rl_img;

public

ViewHolder(View

itemView)

{

super(itemView);

im_img

=

(ImageView)

itemView.findViewById(R.id.iv_img);

iv_add

=

(ImageView)

itemView.findViewById(R.id.iv_add);

im_delete

=

(ImageView)

itemView.findViewById(R.id.im_delete);

id_rl_img

=

(FrameLayout)

itemView.findViewById(R.id.id_rl_img);

}

}

//拖拽排序相關(guān)

@Override

public

void

onItemMove(int

fromPos,

int

toPos)

{

if(fromPos

==

mDatas.size()-1

||

toPos

==

mDatas.size()-1

)

return;

Collections.swap(mDatas,fromPos,toPos);

notifyItemMoved(fromPos,toPos);

}

//滑動(dòng)刪除相關(guān)

@Override

public

void

onItemDel(int

pos)

{

if(pos

==

mDatas.size()

-

1)

return;

mDatas.remove(pos);

notifyItemRemoved(pos);

}

public

interface

OnClickListener{

void

onClick(View

v,

int

position);

}

private

static

OnClickListener

onClickListener;

public

void

setOnClickListener(OnClickListener

onClickListener)

{

this.onClickListener

=

onClickListener;

}

public

static

class

MyClickListener

implements

View.OnClickListener{

private

ViewHolder

mHolder;

public

MyClickListener(ViewHolder

holder

){

this.mHolder

=

holder;

}

@Override

public

void

onClick(View

view)

{

switch

(view.getId()){

case

R.id.iv_add:

case

R.id.im_delete:

case

R.id.iv_img:

if(onClickListener!=null)

{

int

pos

=

mHolder.getAdapterPosition();

onClickListener.onClick(view,

pos);

}

break;

}

}

}

}4.拖拽排序(1)RecycleView通過ItemTouchHelper實(shí)現(xiàn)

MyItemTouchHelperCallback

callBack

=

new

MyItemTouchHelperCallback(mPhotoAdapter);

//實(shí)現(xiàn)拖拽排序

final

ItemTouchHelper

touchHelper

=

new

ItemTouchHelper(callBack);

//調(diào)用ItemTouchHelper的attachToRecyclerView方法建立聯(lián)系

touchHelper.attachToRecyclerView(mRecycleView);(2)MyItemTouchHelperCallback的自定義package

com.zlc.friendcirclephoto.adapter;

import

android.graphics.Canvas;

import

android.support.v7.widget.GridLayoutManager;

import

android.support.v7.widget.LinearLayoutManager;

import

android.support.v7.widget.RecyclerView;

import

android.support.v7.widget.StaggeredGridLayoutManager;

import

android.support.v7.widget.helper.ItemTouchHelper;

public

class

MyItemTouchHelperCallback

extends

ItemTouchHelper.Callback

{

private

SendImageAdapter

mAdapter;

//適配器傳過來

private

boolean

isLongDrag

=

true;

private

boolean

isMoveSwipe

=

true;

public

MyItemTouchHelperCallback(SendImageAdapter

adapter){

this.mAdapter

=

adapter;

}

@Override

public

int

getMovementFlags(RecyclerView

recyclerView,

RecyclerView.ViewHolder

viewHolder)

{

RecyclerView.LayoutManager

layoutManager

=

recyclerView.getLayoutManager();

int

dragFlags

=

0;

//拖拽的標(biāo)志

int

swipeFlags

=

0;

//刪除的標(biāo)志

int

position

=

viewHolder.getAdapterPosition();

if(position

==

mAdapter.getDatas().size()

-

1){

//

如果是最后一個(gè)條目

則既不能拖拽也不能刪除

dragFlags

=

0;

swipeFlags

=

0;

}

else

if(layoutManager

instanceof

GridLayoutManager

||

layoutManager

instanceof

StaggeredGridLayoutManager){//網(wǎng)格布局

則支持上下左右拖拽

不支持刪除

dragFlags

=

ItemTouchHelper.UP

|

ItemTouchHelper.DOWN

|

ItemTouchHelper.LEFT

|

ItemTouchHelper.RIGHT;

//允許上下左右的拖動(dòng)

swipeFlags

=

0;

//不能刪除

}else

if(layoutManager

instanceof

LinearLayoutManager){

//線性布局分為垂直和水平

LinearLayoutManager

manager

=

(LinearLayoutManager)

layoutManager;

int

orientation

=

manager.getOrientation();

if(orientation

==

LinearLayoutManager.HORIZONTAL){

//橫向listview列表

dragFlags

=

ItemTouchHelper.LEFT

|

ItemTouchHelper.RIGHT;

//允許左右的拖動(dòng)

swipeFlags

=

ItemTouchHelper.DOWN;

//只允許從上向下側(cè)滑

}else

if(orientation

==

LinearLayoutManager.VERTICAL){

//豎向listview列表

dragFlags

=

ItemTouchHelper.UP

|

ItemTouchHelper.DOWN;

//允許上下的拖動(dòng)

swipeFlags

=

ItemTouchHelper.LEFT;

//只允許從右向左側(cè)滑刪除

}

}else{

//最后一個(gè)條目既不能拖拽也不能刪除

相當(dāng)于更多

dragFlags

=

0;

swipeFlags

=

0;

}

return

makeMovementFlags(dragFlags,swipeFlags);

}

@Override

public

boolean

onMove(RecyclerView

recyclerView,

RecyclerView.ViewHolder

viewHolder,

RecyclerView.ViewHolder

target)

{

mAdapter.onItemMove(viewHolder.getAdapterPosition(),target.getAdapterPosition());

return

true;

}

@Override

public

void

onSwiped(RecyclerView.ViewHolder

viewHolder,

int

direction)

{

mAdapter.onItemDel(viewHolder.getAdapterPosition());

}

//

該方法返回true時(shí)，表示支持長按拖動(dòng)

@Override

public

boolean

isLongPressDragEnabled()

{

return

isLongDrag;

}

//該方法返回true時(shí)，表示支持滑動(dòng)刪除

@Override

public

boolean

isItemViewSwipeEnabled()

{

return

isMoveSwipe;

}

//從靜止?fàn)顟B(tài)變?yōu)橥献Щ蛘呋瑒?dòng)的時(shí)候會回調(diào)該方法，參數(shù)actionState表示當(dāng)前的狀態(tài)。

開始拖拽的時(shí)候給item添加一個(gè)背景