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Android仿微信发表说说实现拍照、多图上传功能

作者：佚名 Android开发编辑：admin 更新时间：2022-07-23

本文实例为大家分享了Android仿微信发表说说、心情功能，供大家参考，具体内容如下

既能实现拍照，选图库，多图案上传的案例，目前好多App都有类似微信朋友圈的功能，能过发表说说等附带图片上传。下面的就是实现该功能的过程：大家还没有看过Android Retrofit 2.0框架上传图片解决方案这篇文章，在看今天的就很容易，接在本项目中用到了一个library：photopicker，封装了图片的选择功能，是否选相机，还有选中图片后可以查看图片的功能。

一、首先：将photopicker到工程中
（1）、先简单讲解一下PhotoPickerIntent的用法：

PhotoPickerIntent intent = new PhotoPickerIntent(MainActivity.this); 
   intent.setSelectModel(SelectModel.MULTI); // 
   intent.setShowCarema(true); // 是否显示拍照 
   intent.setMaxTotal(6); // 最多选择照片数量，默认为6 
   intent.setSelectedPaths(imagePaths); // 已选中的照片地址， 用于回显选中状态 
   startActivityForResult(intent, REQUEST_CAMERA_CODE);

（2）、设置好之后，重写onActivityResult方法处理选中图片和预览加载适配器

@Override 
 protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
  super.onActivityResult(requestCode, resultCode, data); 
  if(resultCode == RESULT_OK) { 
   switch (requestCode) { 
    // 选择照片 
    case REQUEST_CAMERA_CODE: 
     loadAdpater(data.getStringArrayListExtra(PhotoPickerActivity.EXTRA_RESULT)); 
     break; 
    // 预览 
    case REQUEST_PREVIEW_CODE: 
     loadAdpater(data.getStringArrayListExtra(PhotoPreviewActivity.EXTRA_RESULT)); 
     break; 
   } 
  } 
 }

二、重点在GridAdapter

(1)、定义一个变量 mMaxPosition，
(2)、写一个获取最大位置的方法：用来获取item的最大位置。

 //重点在这里，当position==mMaxposition-1让"+"选择图片的默认图片显示。 
 //当目前最多6中图片，则最大7时，图片影藏。 
 if (position==mMaxPosition-1) { 
 holder.image.setImageResource(R.mipmap.ic_launcher); 
 holder.image.setVisibility(View.VISIBLE); 
 if(position==6&&mMaxPosition==7){ 
  holder.image.setImageResource(R.mipmap.ic_launcher); 
  holder.image.setVisibility(View.GONE); 
 } 
 } else { 
 final String path=listUrls.get(position); 
 Glide.with(MainActivity.this) 
   .load(new File(path)) 
   .placeholder(R.mipmap.default_error) 
   .error(R.mipmap.default_error) 
   .centerCrop() 
   .crossFade() 
   .into(holder.image); 
}

（3）、关于图片的显示：

 private class GridAdapter extends BaseAdapter{ 
  private ArrayList<String> listUrls; 
  private int mMaxPosition; 
  private LayoutInflater inflater; 
  public GridAdapter(ArrayList<String> listUrls) { 
   this.listUrls = listUrls; 
   inflater = LayoutInflater.from(MainActivity.this); 
  } 
  public int getCount() { 
    mMaxPosition = listUrls.size()+1; 
   return mMaxPosition; 
  } 
  public int getMaxPosition(){ 
   return mMaxPosition; 
  } 
  @Override 
  public String getItem(int position) { 
   return listUrls.get(position); 
  } 
 
  @Override 
  public long getItemId(int position) { 
   return position; 
  } 
 
  @Override 
  public View getView(int position, View convertView, ViewGroup parent) { 
   ViewHolder holder = null; 
   if (convertView == null) { 
    holder = new ViewHolder(); 
    convertView = inflater.inflate(R.layout.item_image, parent,false); 
    holder.image = (ImageView) convertView.findViewById(R.id.imageView); 
    convertView.setTag(holder); 
   } else { 
    holder = (ViewHolder)convertView.getTag(); 
   } 
   Log.d("", "position:"+position+" mMaxPosition:"+mMaxPosition); 
    //重点在这里，当position==mMaxposition-1让"+"选择图片的默认图片显示。 
    //当目前最多6中图片，则最大7时，图片影藏。 
   if (position==mMaxPosition-1) { 
//    holder.image.setTag("default"); 
    holder.image.setImageResource(R.mipmap.ic_launcher); 
    holder.image.setVisibility(View.VISIBLE); 
    if(position==6&&mMaxPosition==7){ 
     holder.image.setImageResource(R.mipmap.ic_launcher); 
     holder.image.setVisibility(View.GONE); 
    } 
    } else { 
    final String path=listUrls.get(position); 
    Glide.with(MainActivity.this) 
      .load(new File(path)) 
      .placeholder(R.mipmap.default_error) 
      .error(R.mipmap.default_error) 
      .centerCrop() 
      .crossFade() 
      .into(holder.image); 
   }

三、GridView中Item的点击事件

gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
    @Override 
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
 
 
     if (position == gridAdapter.getMaxPosition() - 1) { 
      PhotoPickerIntent intent = new PhotoPickerIntent(MainActivity.this); 
     intent.setSelectModel(SelectModel.MULTI); 
      intent.setShowCarema(true); // 是否显示拍照 
     intent.setMaxTotal(6); // 最多选择照片数量，默认为9 
      intent.setSelectedPaths(imagePaths); // 已选中的照片地址， 用于回显选中状态 
      startActivityForResult(intent, REQUEST_CAMERA_CODE); 
     }else{ 
       PhotoPreviewIntent intent = new PhotoPreviewIntent(MainActivity.this); 
       intent.setCurrentItem(position); 
       intent.setPhotoPaths(imagePaths); 
       startActivityForResult(intent, REQUEST_PREVIEW_CODE); 
     } 
    } 
   });

整体源码：

package com.lidong.photopickersample; 
 
 
import android.content.Intent; 
import android.os.Bundle; 
import android.support.v7.app.AppCompatActivity; 
import android.util.Log; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.AdapterView; 
import android.widget.BaseAdapter; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.GridView; 
import android.widget.ImageView; 
import com.bumptech.glide.Glide; 
import com.lidong.photopicker.ImageCaptureManager; 
import com.lidong.photopicker.PhotoPickerActivity; 
import com.lidong.photopicker.PhotoPreviewActivity; 
import com.lidong.photopicker.SelectModel; 
import com.lidong.photopicker.intent.PhotoPickerIntent; 
import com.lidong.photopicker.intent.PhotoPreviewIntent; 
import org.json.JSONArray; 
import java.io.File; 
import java.util.ArrayList; 
 
 
/** 
 * @ 
 * @author lidong 
 * @date 2016-02-29 
 */ 
public class MainActivity extends AppCompatActivity { 
 
 
 private static final int REQUEST_CAMERA_CODE = 10; 
 private static final int REQUEST_PREVIEW_CODE = 20; 
 private ArrayList<String> imagePaths = new ArrayList<>(); 
 private ImageCaptureManager captureManager; // 相机拍照处理类 
 private GridView gridView; 
 private int columnWidth; 
 private GridAdapter gridAdapter; 
 private Button mButton; 
 private String depp; 
 private EditText textView; 
 
 
 @Override 
 protected void onCreate(Bundle savedInstanceState) { 
 super.onCreate(savedInstanceState); 
 setContentView(R.layout.activity_main); 
 gridView = (GridView) findViewById(R.id.gridView); 
 mButton = (Button) findViewById(R.id.button); 
 textView= (EditText)findViewById(R.id.et_context); 
 int cols = getResources().getDisplayMetrics().widthPixels / getResources().getDisplayMetrics().densityDpi; 
 cols = cols < 3 ? 3 : cols; 
 gridView.setNumColumns(cols); 
 // preview 
 gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() { 
  @Override 
  public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
 
 
  if (position == gridAdapter.getMaxPosition() - 1) { 
   PhotoPickerIntent intent = new PhotoPickerIntent(MainActivity.this); 
   intent.setSelectModel(SelectModel.MULTI); 
   intent.setShowCarema(true); // 是否显示拍照 
   intent.setMaxTotal(6); // 最多选择照片数量，默认为9 
   intent.setSelectedPaths(imagePaths); // 已选中的照片地址， 用于回显选中状态 
   startActivityForResult(intent, REQUEST_CAMERA_CODE); 
  }else{ 
   PhotoPreviewIntent intent = new PhotoPreviewIntent(MainActivity.this); 
   intent.setCurrentItem(position); 
   intent.setPhotoPaths(imagePaths); 
   startActivityForResult(intent, REQUEST_PREVIEW_CODE); 
  } 
  } 
 }); 
 gridAdapter = new GridAdapter(imagePaths); 
 gridView.setAdapter(gridAdapter); 
 
 
 mButton.setOnClickListener(new View.OnClickListener() { 
  @Override 
  public void onClick(View v) { 
  depp =textView.getText().toString().trim()!=null?textView.getText().toString().trim():"woowoeo"; 
  new Thread(){ 
   @Override 
   public void run() { 
   super.run(); 
   FileUploadManager.upload(imagePaths,depp); 
   } 
  }.start(); 
  } 
 }); 
 } 
 
 
 @Override 
 protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
 super.onActivityResult(requestCode, resultCode, data); 
 if(resultCode == RESULT_OK) { 
  switch (requestCode) { 
  // 选择照片 
  case REQUEST_CAMERA_CODE: 
   loadAdpater(data.getStringArrayListExtra(PhotoPickerActivity.EXTRA_RESULT)); 
   break; 
  // 预览 
  case REQUEST_PREVIEW_CODE: 
   loadAdpater(data.getStringArrayListExtra(PhotoPreviewActivity.EXTRA_RESULT)); 
   break; 
  } 
 } 
 } 
 
 
 private void loadAdpater(ArrayList<String> paths){ 
 if(imagePaths == null){ 
  imagePaths = new ArrayList<>(); 
 } 
 imagePaths.clear(); 
 imagePaths.addAll(paths); 
 try{ 
  JSONArray obj = new JSONArray(imagePaths); 
  Log.e("--", obj.toString()); 
 }catch (Exception e){ 
  e.printStackTrace(); 
 } 
 gridAdapter.notifyDataSetChanged(); 
 } 
 
 
 private class GridAdapter extends BaseAdapter{ 
 private ArrayList<String> listUrls; 
 private int mMaxPosition; 
 private LayoutInflater inflater; 
 public GridAdapter(ArrayList<String> listUrls) { 
  this.listUrls = listUrls; 
  inflater = LayoutInflater.from(MainActivity.this); 
 } 
 
 
 public int getCount() { 
  if (listUrls.size() == 9) { 
  mMaxPosition = listUrls.size()+1; 
  } else { 
   mMaxPosition = listUrls.size()+1; 
  } 
  return mMaxPosition; 
 } 
 public int getMaxPosition(){ 
  return mMaxPosition; 
 } 
 @Override 
 public String getItem(int position) { 
  return listUrls.get(position); 
 } 
 
 
 @Override 
 public long getItemId(int position) { 
  return position; 
 } 
 
 
 @Override 
 public View getView(int position, View convertView, ViewGroup parent) { 
  ViewHolder holder = null; 
  if (convertView == null) { 
  holder = new ViewHolder(); 
 
 
  convertView = inflater.inflate(R.layout.item_image, parent,false); 
  holder.image = (ImageView) convertView.findViewById(R.id.imageView); 
  convertView.setTag(holder); 
  } else { 
  holder = (ViewHolder)convertView.getTag(); 
  } 
  Log.d("", "position:"+position+" mMaxPosition:"+mMaxPosition); 
 
 
  if (position==mMaxPosition-1) { 
//  holder.image.setTag("default"); 
  holder.image.setImageResource(R.mipmap.ic_launcher); 
  holder.image.setVisibility(View.VISIBLE); 
  if(position==6&&mMaxPosition==7){ 
   holder.image.setImageResource(R.mipmap.ic_launcher); 
   holder.image.setVisibility(View.GONE); 
  } 
  } else { 
  final String path=listUrls.get(position); 
  Glide.with(MainActivity.this) 
   .load(new File(path)) 
   .placeholder(R.mipmap.default_error) 
   .error(R.mipmap.default_error) 
   .centerCrop() 
   .crossFade() 
   .into(holder.image); 
  } 
 
 
 
 
  return convertView; 
 } 
 public class ViewHolder { 
  public ImageView image; 
 } 
 } 
}

上传的类：FileUploadManager.java

package com.lidong.photopickersample; 
import android.util.Log; 
import com.squareup.okhttp.MediaType; 
import com.squareup.okhttp.RequestBody; 
import java.io.File; 
import java.util.ArrayList; 
import retrofit.Call; 
import retrofit.Callback; 
import retrofit.GsonConverterFactory; 
import retrofit.Response; 
import retrofit.Retrofit; 
import retrofit.http.Multipart; 
import retrofit.http.POST; 
import retrofit.http.Part; 
 
 
/** 
 * Created by lidong on 2016/2/29 
 */ 
public class FileUploadManager { 
 
 
 private static final String ENDPOINT = "http://192.168.1.122:8080"; 
 
 
 public interface FileUploadService { 
 /** 
  * 上传一张图片 
  * @param description 
  * @param imgs 
  * @return 
  */ 
 @Multipart 
 @POST("/upload") 
 Call<String> uploadImage(@Part("fileName") String description, 
     @Part("file\"; filename=\"image.png\"") RequestBody imgs); 
 
 
 
 
 /** 
  * 上传6张图片 
  * @param description 
  * @param imgs1 
  * @param imgs2 
  * @param imgs3 
  * @param imgs4 
  * @param imgs5 
  * @param imgs6 
  * @return 
  */ 
 @Multipart 
 @POST("/upload") 
 Call<String> uploadImage(@Part("description") String description, 
     @Part("file\"; filename=\"image.png\"") RequestBody imgs1, 
     @Part("file\"; filename=\"image.png\"") RequestBody imgs2, 
     @Part("file\"; filename=\"image.png\"") RequestBody imgs3, 
     @Part("file\"; filename=\"image.png\"") RequestBody imgs4, 
     @Part("file\"; filename=\"image.png\"") RequestBody imgs5, 
     @Part("file\"; filename=\"image.png\"") RequestBody imgs6); 
 } 
 
 
 private static final Retrofit sRetrofit = new Retrofit .Builder() 
  .baseUrl(ENDPOINT) 
  .addConverterFactory(GsonConverterFactory.create()) 
//  .addCallAdapterFactory(RxJavaCallAdapterFactory.create()) // 使用RxJava作为回调适配器 
  .build(); 
 
 
 private static final FileUploadService apiManager = sRetrofit.create(FileUploadService.class); 
 
 /** 
 * 发说说 
 * @param paths 
 * @param desp 
 */ 
 public static void upload(ArrayList<String> paths,String desp){ 
 RequestBody[] requestBody= new RequestBody[6]; 
 if (paths.size()>0) { 
  for (int i=0;i<paths.size();i++) { 
  requestBody[i] = 
   RequestBody.create(MediaType.parse("multipart/form-data"), new File(paths.get(i))); 
  } 
 } 
 Call<String> call = apiManager.uploadImage( desp,requestBody[0],requestBody[1],requestBody[2],requestBody[3],requestBody[4],requestBody[5]); 
 call.enqueue(new Callback<String>() { 
  @Override 
  public void onResponse(Response<String> response, Retrofit retrofit) { 
  Log.v("Upload", response.message()); 
  Log.v("Upload", "success"); 
  } 
 
 
  @Override 
  public void onFailure(Throwable t) { 
  Log.e("Upload", t.toString()); 
  } 
 }); 
 
 
 } 
}

效果：

以上就是本文的全部内容，希望对大家的学习有所帮助。

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