android相机网格,android 拍照显示多张图片（网格布局）

效果图

Activity的代码，里面包含拍照，以及拍照返回的处理(目标版本是7.0的拍照代码不适用)

package com.hjqjl.mulitimageselect;

import android.content.Intent;

import android.net.Uri;

import android.os.Bundle;

import android.os.Environment;

import android.provider.MediaStore;

import android.support.annotation.Nullable;

import android.support.v7.app.AppCompatActivity;

import android.support.v7.widget.GridLayoutManager;

import android.support.v7.widget.RecyclerView;

import android.view.View;

import android.widget.Button;

import android.widget.Toast;

import com.hjqjl.mulitimageselect.adapter.ImageAdapter;

import com.hjqjl.mulitimageselect.util.BitmapUtils;

import com.hjqjl.mulitimageselect.util.FileUtils;

import com.orhanobut.logger.Logger;

import java.io.File;

public class ImageSelectActivity extends AppCompatActivity {

//临时目录

public static final String mSaveTemporaryPath = Environment.getExternalStorageDirectory() + "/" + BuildConfig.APPLICATION_ID + "/temporary/";

private final int PHOTO_CAMERA_REQUEST_CODE = 2003;

private ImageAdapter imageAdapter = null;

@Override

protected void onActivityResult(int requestCode, int resultCode, Intent data) {

if (resultCode == RESULT_OK) {

switch (requestCode) {

/*拍照返回*/

case PHOTO_CAMERA_REQUEST_CODE:

Logger.v("-----onActivityResult:" + imgFile.getAbsolutePath());

File fileDir = new File(mSaveTemporaryPath);

if (!fileDir.exists()) {

fileDir.mkdirs();

}

File compressFile = FileUtils.createImageFile(fileDir);//创建临时文件，覆盖原来的File文件的时候，不知道问什么有时名字会自动加上时间戳

if (compressFile != null) {

BitmapUtils.compressPicture(imgFile.getAbsolutePath(), compressFile);

Logger.v("" + compressFile.getAbsolutePath());

//将照片文件放入集合中

imageAdapter.getDataList().add(compressFile);

imageAdapter.notifyDataSetChanged();

} else {

Toast.makeText(this, "获取图片失败，请重新上传", Toast.LENGTH_SHORT).show();

}

break;

}

}

super.onActivityResult(requestCode, resultCode, data);

}

@Override

protected void onCreate(@Nullable Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_image_select);

RecyclerView recyclerView = (RecyclerView) findViewById(R.id.rv_selectImage_image);

Button button = (Button) findViewById(R.id.btn_selectImage_button);

imageAdapter = new ImageAdapter(this);

recyclerView.setAdapter(imageAdapter);

recyclerView.setLayoutManager(new GridLayoutManager(ImageSelectActivity.this, 3));

imageAdapter.setOnPicClickListener(new ImageAdapter.OnPicClickListener() {

@Override

public void onPicClick() {

openCamera();

}

});

button.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

Toast.makeText(ImageSelectActivity.this, "我只是个按钮", Toast.LENGTH_SHORT).show();

}

});

}

private File imgFile;

/**

* 拍照

*/

private void openCamera() {

Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

File file = new File(mSaveTemporaryPath);

if (!file.exists()) {

file.mkdirs();

}

imgFile = new File(mSaveTemporaryPath, "photo.jpg");

Uri mUri = Uri.fromFile(imgFile);

cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, mUri);

cameraIntent.putExtra("return-data", true);

startActivityForResult(cameraIntent, PHOTO_CAMERA_REQUEST_CODE);

}

@Override

protected void onDestroy() {

super.onDestroy();

//关闭界面的时候删除文件

new Thread(new Runnable() {

@Override

public void run() {

for (File file : imageAdapter.getDataList()) {

FileUtils.deleteFolderFile(file);

}

FileUtils.deleteFolderFile(imgFile);

}

}).start();

}

}

布局文件

展示图片的网格布局的adapter如下：

package com.hjqjl.mulitimageselect.adapter;

import android.content.Context;

import android.support.v7.widget.RecyclerView;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.ImageView;

import android.widget.Toast;

import com.bumptech.glide.Glide;

import com.bumptech.glide.load.engine.DiskCacheStrategy;

import com.hjqjl.mulitimageselect.R;

import java.io.File;

public class ImageAdapter extends ListBaseAdapter{

private LayoutInflater mLayoutInflater;

// 图片的点击事件

public interface OnPicClickListener {

void onPicClick();

}

private OnPicClickListener mOnPicClickListener;

public void setOnPicClickListener(OnPicClickListener mOnPicClickListener) {

this.mOnPicClickListener = mOnPicClickListener;

}

public ImageAdapter(Context context) {

mLayoutInflater = LayoutInflater.from(context);

mContext = context;

}

@Override

public int getItemCount() {

return mDataList.size() + 1;//比集合里的数据多一条，显示自定义的添加图片按钮

}

@Override

public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

return new ViewHolder(mLayoutInflater.inflate(R.layout.item_image_seclect, parent, false));

}

@Override

public void onBindViewHolder(final RecyclerView.ViewHolder holder, final int position) {

final ViewHolder viewHolder = (ViewHolder) holder;

final int mPosition = viewHolder.getAdapterPosition();

if (mPosition == getItemCount() - 1) {//数据的最后一条(显示的添加图片的那个按钮)

viewHolder.ivPic.setBackgroundResource(R.mipmap.bg_take_photo);

if (mOnPicClickListener != null) {

viewHolder.ivPic.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

mOnPicClickListener.onPicClick();

}

});

}

} else {

File fileImage = mDataList.get(mPosition);

viewHolder.ivPic.setBackgroundResource(R.mipmap.bg_take_photo);

Glide.with(mContext).load(fileImage).skipMemoryCache(true).diskCacheStrategy(DiskCacheStrategy.NONE).into(viewHolder.ivPic);

viewHolder.ivPic.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

Toast.makeText(mContext, "点击的图片", Toast.LENGTH_SHORT).show();

}

});

}

}

private class ViewHolder extends RecyclerView.ViewHolder {

private ImageView ivPic;

ViewHolder(View itemView) {

super(itemView);

ivPic = (ImageView) itemView.findViewById(R.id.iv_imageSelect_item_img);

}

}

}

ImageAdapter 继承的父类ListBaseAdapter是自定义的，将一些常用的方法提取出来了。代码如下：

package com.hjqjl.mulitimageselect.adapter;

import android.content.Context;

import android.support.v7.widget.RecyclerView;

import android.view.ViewGroup;

import java.util.ArrayList;

import java.util.Collection;

import java.util.List;

/**

* RecyclerView的adapter的辅助类，继承本类使用

*

* @param */

public class ListBaseAdapterextends RecyclerView.Adapter {

protected Context mContext;

protected ArrayListmDataList = new ArrayList<>();

@Override

public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

return null;

}

@Override

public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {

}

@Override

public int getItemCount() {

return mDataList.size();

}

public ListgetDataList() {

return mDataList;

}

public void setDataList(Collectionlist) {

this.mDataList.clear();

this.mDataList.addAll(list);

notifyDataSetChanged();

}

public void addAll(Collectionlist) {

int lastIndex = this.mDataList.size();

if (this.mDataList.addAll(list)) {

notifyItemRangeInserted(lastIndex, list.size());

}

}

public void remove(int position) {

if (this.mDataList.size() > 0) {

mDataList.remove(position);

notifyItemRemoved(position);

}

}

public void clear() {

mDataList.clear();

notifyDataSetChanged();

}

}

ImageAdapter的item布局文件：

完毕。 demo：https://gitee.com/hjqjl/MulitImageSelect