Android開發：仿微信和QQ空間發說說相簿讀取、拍照、圖片裁剪和圖片上傳伺服器等功能的實現
阿新 • • 發佈：2019-01-06
第一步：新增依賴包： dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) compile 'com.android.support:appcompat-v7:23.2.1' compile project(':photopicker') compile 'com.squareup.retrofit2:converter-gson:2.0.0' compile 'com.squareup.retrofit2:adapter-rxjava:2.0.0' compile 'io.reactivex:rxjava:1.1.0' compile 'io.reactivex:rxandroid:1.1.0' compile 'com.squareup.retrofit2:retrofit:2.0.0' } 第二步：導庫：photopicker(圖片選擇器) （也可以用依賴包:compile 'com.foamtrace:photopicker:1.0'） 第三步：AndroidManifest.xml中： 許可權： 手動新增photopicker的activity（我用的時候，沒有自動生成，需要手動匯入） 第四步：上程式碼 MainActivity中： 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.util.ArrayList; public class MainActivity extends AppCompatActivity { //111111 private static final int REQUEST_CAMERA_CODE = 10; private static final int REQUEST_PREVIEW_CODE = 20; private ArrayList imagePaths = new ArrayList<>(); private ImageCaptureManager captureManager; // 相機拍照處理類 private GridAdapter gridAdapter; private GridView gridView; private Button mButton; private String depp; private EditText textView; private String TAG =MainActivity.class.getSimpleName(); @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); //22222 int cols = getResources().getDisplayMetrics().widthPixels / getResources().getDisplayMetrics().densityDpi; cols = cols < 3 ? 3 : cols; gridView.setNumColumns(cols); // 3333preview gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { String imgs = (String) parent.getItemAtPosition(position); if ("000000".equals(imgs) ){ PhotoPickerIntent intent = new PhotoPickerIntent(MainActivity.this); intent.setSelectModel(SelectModel.MULTI); intent.setShowCarema(true); // 是否顯示拍照 intent.setMaxTotal(6); // 最多選擇照片數量，預設為6 intent.setSelectedPaths(imagePaths); // 已選中的照片地址， 用於回顯選中狀態 startActivityForResult(intent, REQUEST_CAMERA_CODE); }else{ PhotoPreviewIntent intent = new PhotoPreviewIntent(MainActivity.this); intent.setCurrentItem(position); intent.setPhotoPaths(imagePaths); startActivityForResult(intent, REQUEST_PREVIEW_CODE); } } }); imagePaths.add("000000"); 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.uploadMany(imagePaths, depp); // FileUploadManager.upload(imagePaths,depp); } }.start(); } }); } @Override protected void onResume() { super.onResume(); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if(resultCode == RESULT_OK) { switch (requestCode) { // 選擇照片 case REQUEST_CAMERA_CODE: ArrayList list = data.getStringArrayListExtra(PhotoPickerActivity.EXTRA_RESULT); Log.d(TAG, "list: " + "list = [" + list.size()); loadAdpater(list); break; // 預覽 case REQUEST_PREVIEW_CODE: ArrayList ListExtra = data.getStringArrayListExtra(PhotoPreviewActivity.EXTRA_RESULT); Log.d(TAG, "ListExtra: " + "ListExtra = [" + ListExtra.size()); loadAdpater(ListExtra); break; } } } private void loadAdpater(ArrayList paths){ if (imagePaths!=null&& imagePaths.size()>0){ imagePaths.clear(); } if (paths.contains("000000")){ paths.remove("000000"); } paths.add("000000"); imagePaths.addAll(paths); gridAdapter = new GridAdapter(imagePaths); gridView.setAdapter(gridAdapter); try{ JSONArray obj = new JSONArray(imagePaths); Log.e("--", obj.toString()); }catch (Exception e){ e.printStackTrace(); } } private class GridAdapter extends BaseAdapter{ private ArrayList listUrls; private LayoutInflater inflater; public GridAdapter(ArrayList listUrls) { this.listUrls = listUrls; if(listUrls.size() == 7){ listUrls.remove(listUrls.size()-1); } inflater = LayoutInflater.from(MainActivity.this); } public int getCount(){ return listUrls.size(); } @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(); } final String path=listUrls.get(position); if (path.equals("000000")){ holder.image.setImageResource(R.mipmap.add); }else { Glide.with(MainActivity.this) .load(path) .placeholder(R.mipmap.default_error) .error(R.mipmap.default_error) .centerCrop() .crossFade() .into(holder.image); } return convertView; } class ViewHolder { ImageView image; } } } 佈局activity_main.xml中： 介面卡中的條目：item_image.xml <?xml version="1.0" encoding="utf-8"?> 在styles.xml中： 檔案上傳下載的管理類： import android.util.Log; import java.io.File; import java.util.ArrayList; import java.util.HashMap; import java.util.Map; import okhttp3.MediaType; import okhttp3.RequestBody; import retrofit2.Call; import retrofit2.Callback; import retrofit2.Response; import retrofit2.Retrofit; import retrofit2.converter.gson.GsonConverterFactory; import retrofit2.http.Multipart; import retrofit2.http.POST; import retrofit2.http.Part; import retrofit2.http.PartMap; public class FileUploadManager { private static final String ENDPOINT = "http://192.168.1.21:8080"; private static String TAG = FileUploadManager.class.getSimpleName(); public interface FileUploadService { /** * 上傳一張圖片 * @param description * @param imgs * @return */ @Multipart @POST("/upload") Call uploadImage(@Part("fileName") String description, @Part("file\"; filename=\"image.png\"") RequestBody imgs); /** * 上傳6張圖片 * @param description * @param imgs1 * @param imgs2 * @param imgs3 * @param imgs4 * @param imgs5 * @param imgs6 * @return */ @Multipart @POST("/upload") Call 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); /** * 簡便寫法 * @param description * @param imgs1 * @return */ @Multipart @POST("/upload") Call uploadImage(@Part("description") String description,@PartMap Map imgs1); } private static final Retrofit sRetrofit = new Retrofit .Builder() .baseUrl(ENDPOINT) .addConverterFactory(GsonConverterFactory.create()) .build(); private static final FileUploadService apiManager = sRetrofit.create(FileUploadService.class); /** * 發說說 * @param paths * @param desp */ public static void upload(ArrayList paths,String desp){ RequestBody[] requestBody= new RequestBody[6]; if (paths.size()>0) { for (int i=0;i call = apiManager.uploadImage( desp,requestBody[0],requestBody[1],requestBody[2],requestBody[3],requestBody[4],requestBody[5]); call.enqueue(new Callback() { @Override public void onResponse(Call call, Response response) { Log.d(TAG, "onResponse() called with: " + "call = [" + call + "], response = [" + response + "]"); } @Override public void onFailure(Call call, Throwable t) { Log.d(TAG, "onFailure() called with: " + "call = [" + call + "], t = [" + t + "]"); } }); } /** * * @param paths * @param desp */ public static void uploadMany(ArrayList paths,String desp){ Map photos = new HashMap<>(); if (paths.size()>0) { for (int i=0;i stringCall = apiManager.uploadImage(desp, photos); stringCall.enqueue(new Callback() { @Override public void onResponse(Call call, Response response) { Log.d(TAG, "onResponse() called with: " + "call = [" + call + "], response = [" + response + "]"); } @Override public void onFailure(Call call, Throwable t) { Log.d(TAG, "onFailure() called with: " + "call = [" + call + "], t = [" + t + "]"); } }); } }