Android实现调用系统图库与相机设置头像并保存在本地及服务器
| 代码如下 | 复制代码 |
/** * 1、实现原理:用户打开相册或相机选择相片后,相片经过压缩并设置在控件上,图片在本地sd卡存一份(如果有的话,没有则内部存储,所以还 * 需要判断用户是否挂载了sd卡),然后在服务器上存储一份该图片,当下次再次启动应用时,会默认去sd卡加载该图片,如果本地没有,再会去联网请求 * 2、使用了picasso框架以及自定义BitmapUtils工具类 * 3、记得加上相关权限 * * */ publicclassMainActivityextendsAppCompatActivityimplementsView.OnClickListener { privateImageView iv;//要设置的头像 privateButton btn_photo;//调用相册按钮 privateButton btn_camera;//调用相机按钮 @Override protectedvoidonCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); iv=(ImageView) findViewById(R.id.iv); btn_photo = (Button) findViewById(R.id.btn_photo); btn_camera = (Button) findViewById(R.id.btn_camera); btn_photo.setOnClickListener(this); btn_camera.setOnClickListener(this); } @Override publicvoidonClick(View v) { switch(v.getId()) { caseR.id.btn_photo://打开系统相册 Intent intent=newIntent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI); startActivityForResult(intent,100); break; caseR.id.btn_camera://打开系统相机 Intent intent2=newIntent(MediaStore.ACTION_IMAGE_CAPTURE); startActivityForResult(intent2,200); break; } } @RequiresApi(api = Build.VERSION_CODES.KITKAT) @Override protectedvoidonActivityResult(intrequestCode,intresultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if(requestCode==100&&resultCode==RESULT_OK&&data!=null){//系统相册 Uri imageData = data.getData(); String path=getPath(imageData); Bitmap bitmap = BitmapFactory.decodeFile(path); Bitmap bitmap1 = BitmapUtils.zoom(bitmap, iv.getWidth(), iv.getHeight()); Bitmap bitmap2 = BitmapUtils.circleBitmap(bitmap1); //加载显示 iv.setImageBitmap(bitmap2); //bitmap图片上传到服务器...... //bitmap图片保存到本地 saveImage(bitmap2); }elseif(requestCode==200&&resultCode==RESULT_OK&&data!=null){//系统相机 Bitmap bitmap = (Bitmap) data.getExtras().get("data"); BitmapUtils.zoom(bitmap,iv.getWidth(),iv.getHeight()); bitmap=BitmapUtils.circleBitmap(bitmap); //加载显示 iv.setImageBitmap(bitmap); //bitmap图片上传到服务器...... //bitmap图片保存到本地 saveImage(bitmap); } } /** * 数据的存储。（5种） * Bimap:内存层面的图片对象。 * * 存储--->内存： * BitmapFactory.decodeFile(String filePath); * BitmapFactory.decodeStream(InputStream is); * 内存--->存储： * bitmap.compress(Bitmap.CompressFormat.PNG,100,OutputStream os); */ privatevoidsaveImage(Bitmap bitmap) { File filesDir; if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){//判断sd卡是否挂载 //路径1：storage/sdcard/Android/data/包名/files filesDir =this.getExternalFilesDir(""); }else{//手机内部存储 //路径：data/data/包名/files filesDir =this.getFilesDir(); } FileOutputStream fos =null; try{ File file =newFile(filesDir,"icon.png"); fos =newFileOutputStream(file); bitmap.compress(Bitmap.CompressFormat.PNG,100,fos); }catch(FileNotFoundException e) { e.printStackTrace(); }finally{ if(fos !=null){ try{ fos.close(); }catch(IOException e) { e.printStackTrace(); } } } } //如果本地有,就不需要再去联网去请求 privatebooleanreadImage() { File filesDir; if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){//判断sd卡是否挂载 //路径1：storage/sdcard/Android/data/包名/files filesDir = getExternalFilesDir(""); }else{//手机内部存储 //路径：data/data/包名/files filesDir = getFilesDir(); } File file =newFile(filesDir,"icon.png"); if(file.exists()){ //存储--->内存 Bitmap bitmap = BitmapFactory.decodeFile(file.getAbsolutePath()); iv.setImageBitmap(bitmap); returntrue; } returnfalse; } @RequiresApi(api = Build.VERSION_CODES.KITKAT) privateString getPath(Uri uri) { intsdkVersion = Build.VERSION.SDK_INT; //高于4.4.2的版本 if(sdkVersion >=19) { Log.e("TAG","uri auth: "+ uri.getAuthority()); if(isExternalStorageDocument(uri)) { String docId = DocumentsContract.getDocumentId(uri); String[] split = docId.split(":"); String type = split[0]; if("primary".equalsIgnoreCase(type)) { returnEnvironment.getExternalStorageDirectory() +"/"+ split[1]; } }elseif(isDownloadsDocument(uri)) { finalString id = DocumentsContract.getDocumentId(uri); finalUri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(id)); returngetDataColumn(this, contentUri,null,null); }elseif(isMediaDocument(uri)) { finalString docId = DocumentsContract.getDocumentId(uri); finalString[] split = docId.split(":"); finalString type = split[0]; Uri contentUri =null; if("image".equals(type)) { contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI; }elseif("video".equals(type)) { contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI; }elseif("audio".equals(type)) { contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI; } finalString selection ="_id=?"; finalString[] selectionArgs =newString[]{split[1]}; returngetDataColumn(this, contentUri, selection, selectionArgs); }elseif(isMedia(uri)) { String[] proj = {MediaStore.Images.Media.DATA}; Cursor actualimagecursor =this.managedQuery(uri, proj,null,null,null); intactual_image_column_index = actualimagecursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA); actualimagecursor.moveToFirst(); returnactualimagecursor.getString(actual_image_column_index); } }elseif("content".equalsIgnoreCase(uri.getScheme())) { // Return the remote address if(isGooglePhotosUri(uri)) returnuri.getLastPathSegment(); returngetDataColumn(this, uri,null,null); } // File elseif("file".equalsIgnoreCase(uri.getScheme())) { returnuri.getPath(); } returnnull; } /** * uri路径查询字段 * * @param context * @param uri * @param selection * @param selectionArgs * @return */ publicstaticString getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) { Cursor cursor =null; finalString column ="_data"; finalString[] projection = {column}; try{ cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,null); if(cursor !=null&& cursor.moveToFirst()) { finalintindex = cursor.getColumnIndexOrThrow(column); returncursor.getString(index); } }finally{ if(cursor !=null) cursor.close(); } returnnull; } privatebooleanisExternalStorageDocument(Uri uri) { return"com.android.externalstorage.documents".equals(uri.getAuthority()); } publicstaticbooleanisDownloadsDocument(Uri uri) { return"com.android.providers.downloads.documents".equals(uri.getAuthority()); } publicstaticbooleanisMediaDocument(Uri uri) { return"com.android.providers.media.documents".equals(uri.getAuthority()); } publicstaticbooleanisMedia(Uri uri) { return"media".equals(uri.getAuthority()); } /** * @param uri The Uri to check. * @return Whether the Uri authority is Google Photos. */ publicstaticbooleanisGooglePhotosUri(Uri uri) { return"com.google.android.apps.photos.content".equals(uri.getAuthority()); } /** * 判断本地是否有该图片,没有则去联网请求 * */ @Override protectedvoidonResume() { super.onResume(); if(readImage()){ return; } } } //BitmapUtils工具类public class BitmapUtils { /** * 该方法用于将图片进行圆形处理 * */ publicstaticBitmap circleBitmap(Bitmap source){ //默认只对宽进行处理 int width=source.getWidth(); Bitmap bitmap=Bitmap.createBitmap(width,width,Bitmap.Config.ARGB_8888); Canvas canvas=new Canvas(bitmap); Paint paint=new Paint(); //设置抗锯齿 paint.setAntiAlias(true); canvas.drawCircle(width/2,width/2,width/2,paint); paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN)); canvas.drawBitmap(source,0,0,paint); return bitmap; } /** * 该方法用于图片压缩处理,注意width、height参数的类型必须是float * */ public static Bitmap zoom(Bitmap source,float width,float height){ Matrix matrix=new Matrix(); //图片进行压缩处理 matrix.postScale(width/source.getWidth(),height/source.getHeight()); Bitmap bitmap = Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(), matrix, false); return bitmap; }} | |
