Android获取手机内存图片展示

效果图photo.png需求：获取手机内存中的所有图片，以及拍照图片。可勾选上传到服务器。本文只实现了获取内存中的所有图片展示勾选，但未放置上传服务器代码。毕竟服务器各不相同且上传只需IO操作首页布局RecyclerView，就不...

效果图

需求： 获取手机内存中的所有图片，以及拍照图片。可勾选上传到服务器。

本文只实现了获取内存中的所有图片展示勾选，但未放置上传服务器代码。毕竟服务器各不相同且上传只需IO操作

首页布局RecyclerView，就不上布局代码了。

直接上整体首页代码

public class PhotoListActivity extends AppCompatActivity implements View.OnClickListener {    private RecyclerView recycManager;    private LoaderManager.LoaderCallbacks<Cursor> loaderCallbacks;//图片加载器    private Activity mActivity = null;    private ArrayList<PhotoInfo> photoInfoList = new ArrayList<>();    private PhotoAdapter photoAdapter;    private File path;    private TextView textNumber;    private TextView textEnter;    private ArrayList<String> resultList = new ArrayList<>();//返回首页的集合    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_photo_list);        initView();        initListener();        initPhoto();        initRecycler();    }    private void initView() {        mActivity = this;        recycManager = (RecyclerView) findViewById(R.id.recycManager);        textNumber = (TextView) findViewById(R.id.textNumber);        textEnter = (TextView) findViewById(R.id.textEnter);        textNumber.setText("(" + 0 + "/9" + ")");    }    private void initListener() {        textEnter.setOnClickListener(this);    }    private File createCreamePath;    private void initRecycler() {        GridLayoutManager gridLayoutManager = new GridLayoutManager(mActivity, 3);        recycManager.setLayoutManager(gridLayoutManager);        photoAdapter = new PhotoAdapter(mActivity, photoInfoList);        recycManager.setAdapter(photoAdapter);        photoAdapter.getPhoto(new PhotoAdapter.getPhoto() {            @Override            public void getTakeCreame(View v) {                Intent intentPhone = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);                createCreamePath = createTmpFile(mActivity, "/Edreamoon/Pictures");                intentPhone.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(createCreamePath));                intentPhone.addFlags(Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION);                startActivityForResult(intentPhone, 100);            }        });        photoAdapter.getSelectPhoto(new PhotoAdapter.getSelectPhoto() {            @Override            public void getListPhoto(List<String> photoPath) {                resultList.clear();                int size = photoPath.size();                textNumber.setText("(" + size + "/9" + ")");                if (size > 0) {                    textEnter.setVisibility(View.VISIBLE);                } else {                    textEnter.setVisibility(View.GONE);                }                //获取选择集合赋值给 返回MAIN集合                for (String path : photoPath) {                    if (resultList.contains(path)) {                        resultList.remove(path);                    } else {                        resultList.add(path);                    }                }            }        });    }    private void initPhoto() {        loaderCallbacks = new LoaderManager.LoaderCallbacks<Cursor>() {            private final String[] IMAGE_PROJECT = {                    MediaStore.Images.Media.DATA,                    MediaStore.Images.Media.DISPLAY_NAME,                    MediaStore.Images.Media.DATE_ADDED,                    MediaStore.Images.Media._ID,                    MediaStore.Images.Media.SIZE,            };            @Override            public Loader<Cursor> onCreateLoader(int id, Bundle args) {                if (id == 0) {                    return new CursorLoader(mActivity, MediaStore.Images.Media.EXTERNAL_CONTENT_URI, IMAGE_PROJECT, null, null, IMAGE_PROJECT[2] + " DESC");                } else if (id == 1) {                    return new CursorLoader(mActivity, MediaStore.Images.Media.EXTERNAL_CONTENT_URI, IMAGE_PROJECT, IMAGE_PROJECT[0] + "like '%" + args.getString("path") + "%'", null, IMAGE_PROJECT[2] + " DESC");                }                return null;            }            @Override            public void onLoadFinished(Loader<Cursor> loader, Cursor data) {                if (data != null) {                    photoInfoList.clear();                    int count = data.getCount();                    data.moveToFirst();                    if (count > 0) {                        do {                            String path = data.getString(data.getColumnIndexOrThrow(IMAGE_PROJECT[0]));                            String name = data.getString(data.getColumnIndexOrThrow(IMAGE_PROJECT[1]));                            long time = data.getLong(data.getColumnIndexOrThrow(IMAGE_PROJECT[2]));                            int size = data.getInt(data.getColumnIndexOrThrow(IMAGE_PROJECT[4]));                            PhotoInfo photoInfo = new PhotoInfo(path, name, time, false);                            Boolean isSize5k = size > 1024  5;                            if (isSize5k) {                                photoInfoList.add(photoInfo);                            }                        } while (data.moveToNext());                    }                }            }            @Override            public void onLoaderReset(Loader<Cursor> loader) {            }        };        getSupportLoaderManager().restartLoader(0, null, loaderCallbacks);    }    @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        super.onActivityResult(requestCode, resultCode, data);        if (requestCode == 100 && resultCode == RESULT_OK) {            resultList.clear();            String absolutePath = createCreamePath.getAbsolutePath();            resultList.add(absolutePath);            Intent intent = new Intent(mActivity, MainActivity.class);            intent.putExtra("resultPath", resultList);            setResult(200, intent);            finish();        }    }    /* 创建文件       @param context  context       @param filePath 文件路径 @return file      /    public static File createTmpFile(Context context, String filePath) {        String timeStamp = new SimpleDateFormat("yyyyMMddHHmmss", Locale.CHINA).format(new Date());        String externalStorageState = Environment.getExternalStorageState();        File dir = new File(Environment.getExternalStorageDirectory() + filePath);        if (externalStorageState.equals(Environment.MEDIA_MOUNTED)) {            if (!dir.exists()) {                dir.mkdirs();            }            return new File(dir, timeStamp + ".jpg");        } else {            File cacheDir = context.getCacheDir();            return new File(cacheDir, timeStamp + ".jpg");        }    }    @Override    public void onClick(View v) {        switch (v.getId()) {            case R.id.textEnter:                Intent intent = new Intent(mActivity, MainActivity.class);                intent.putExtra("resultPath", resultList);                setResult(200, intent);                finish();                break;        }    }}

adapter代码

public class PhotoAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {    private Context mContext;    private List<PhotoInfo> list;    private LayoutInflater inflater;    private getPhoto getPhoto;    private List<String> selectPhoto = new ArrayList<>();    private getSelectPhoto getSelectPhoto;    public PhotoAdapter(Context mContext, List<PhotoInfo> list) {        this.mContext = mContext;        this.list = list;        inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);        selectPhoto.clear();    }    public void getPhoto(getPhoto getPhoto) {        this.getPhoto = getPhoto;    }    public void getSelectPhoto(getSelectPhoto getSelectPhoto) {        this.getSelectPhoto = getSelectPhoto;    }    @Override    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        if (viewType == 0) {//显示的第一张图片的布局 ， 就是调用摄像头拍照的布局。            return new MyViewHolder(inflater.inflate(R.layout.item_photo_adapter_first, parent, false));        }//之后的图片显示的布局。        return new MyViewHolder(inflater.inflate(R.layout.item_photo_adapter, parent, false));    }    @Override    public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {        holder.setIsRecyclable(false);        ViewGroup.LayoutParams params = holder.itemView.getLayoutParams();        params.height = getScreenWidth(mContext) / 3;        params.width = getScreenWidth(mContext) / 3;        holder.itemView.setLayoutParams(params);//重设item大小        if (getItemViewType(position) == 0) {            holder.itemView.setOnClickListener(new View.OnClickListener() {                @Override                public void onClick(View v) {                    //因为拍照要返回参数，所以接口回调方式将事件处理交给activity处理                    getPhoto.getTakeCreame(v);                }            });            return;        }        final MyViewHolder myViewHolder = (MyViewHolder) holder;        final PhotoInfo photoInfo = list.get(position - 1);        Glide.with(mContext).load(photoInfo.path).into(myViewHolder.image);        myViewHolder.image.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                if (selectPhoto.size() < 9) {                    //selectPhoto为选中的集合。                    if (selectPhoto.contains(photoInfo.path)) {                        selectPhoto.remove(photoInfo.path);                        photoInfo.setChecked(false);                        myViewHolder.checkBox.setButtonDrawable(R.mipmap.uncheck);                    } else {                        selectPhoto.add(photoInfo.path);                        photoInfo.setChecked(true);                        myViewHolder.checkBox.setButtonDrawable(R.mipmap.checked);                    }                    myViewHolder.checkBox.setChecked(photoInfo.getChecked());                    getSelectPhoto.getListPhoto(selectPhoto);                } else {                    if (selectPhoto.contains(photoInfo.path)) {                        selectPhoto.remove(photoInfo.path);                        photoInfo.setChecked(false);                        myViewHolder.checkBox.setButtonDrawable(R.mipmap.uncheck);                    } else {                        Toast.makeText(mContext, "最多选择9张", Toast.LENGTH_SHORT).show();                    }                }            }        });        if (photoInfo.getChecked()) {            myViewHolder.checkBox.setChecked(photoInfo.getChecked());            myViewHolder.checkBox.setButtonDrawable(R.mipmap.checked);        } else {            myViewHolder.checkBox.setButtonDrawable(R.mipmap.uncheck);        }    }    @Override    public int getItemViewType(int position) {        if (position == 0) {            return 0;        }        return 1;    }    @Override    public int getItemCount() {        return list.size();    }    class MyViewHolder extends RecyclerView.ViewHolder {        private ImageView image;        private CheckBox checkBox;        public MyViewHolder(View itemView) {            super(itemView);            image = (ImageView) itemView.findViewById(R.id.image);            checkBox = (CheckBox) itemView.findViewById(R.id.checkbox);        }    }    /*       获得屏幕高度 @param context context @return 屏幕高度      /    public int getScreenWidth(Context context) {        WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);        DisplayMetrics outMetrics = new DisplayMetrics();        wm.getDefaultDisplay().getMetrics(outMetrics);        return outMetrics.widthPixels;    }    //获取拍照后的照片    public interface getPhoto {        void getTakeCreame(View v);    }    public interface getSelectPhoto {        void getListPhoto(List<String> photoPath);    }}

模型类

public class PhotoInfo {    public String name;                 // 图片名    public String path;                 // 图片路径    public long time;                   // 图片添加时间    public Boolean checked;             //checkbox  选中状态    public PhotoInfo(String path, String name, long time ,Boolean checked) {        this.path = path;        this.name = name;        this.time = time;        this.checked =checked;    }    public Boolean getChecked() {        return checked;    }    public void setChecked(Boolean checked) {        this.checked = checked;    }    @Override    public String toString() {        return "PhotoInfo{" +                "name='" + name + ''' +                ", path='" + path + ''' +                ", time=" + time +                '}';    }    @Override    public boolean equals(Object object) {        try {            PhotoInfo other = (PhotoInfo) object;            return this.path.equalsIgnoreCase(other.path);        } catch (ClassCastException e) {            e.printStackTrace();        }        return super.equals(object);    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public String getPath() {        return path;    }    public void setPath(String path) {        this.path = path;    }    public long getTime() {        return time;    }    public void setTime(long time) {        this.time = time;    }}

具体思路

（编辑：52刷机网）

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