史上最全选择本地图片和拍照上传,超简单解决获取不到图片问题

来源：互联网发布：网络目标人群分析编辑：程序博客网时间：2024/04/27 18:48

相信很多朋友做上传图片的时候都苦恼过获取不到图片，本篇博客解决你的烦恼

这里是选择本地图片try {                // 选择本地文件                Intent fileIntent = new Intent(                        Intent.ACTION_PICK,                        android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);                /* 取得相片后返回本画面 */                startActivityForResult(fileIntent, myRequestCode);            } catch (Exception e) {                LogUtil.e(e);            }//这里是拍照上传// 调用系统照相功能            try {                    // 调用系统摄像头，进行拍照                    String state = Environment.getExternalStorageState();                    if (state.equals(Environment.MEDIA_MOUNTED)) {                        Intent phoneIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);                        String saveDir = GlobalParams.SAVE_PATH;                        File dir = new File(saveDir);                        if (!dir.exists()) {                            dir.mkdir();                        }                        file = new File(saveDir, System.currentTimeMillis()+".jpg");                        phoneIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(file));                        startActivityForResult(phoneIntent, 2);                }            } catch (Exception e) {                LogUtil.e(e);            }

下面就开始怎么获取图片了

@Override    public void onActivityResult(int requestCode, int resultCode, Intent data) {        super.onActivityResult(requestCode, resultCode, data);        try {            if (requestCode == myRequestCode) {                    Uri uri = data.getData();                    if (bitmap != null) {                        bitmap.recycle();                        bitmap = null;                        file = null;                    }                    if(uri != null){                        String[] proj = { MediaStore.Images.Media.DATA };                        Cursor actualimagecursor = managedQuery(uri, proj, null, null, null);                        int actual_image_column_index = actualimagecursor                                .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);                        actualimagecursor.moveToFirst();                        String img_path = actualimagecursor                                .getString(actual_image_column_index);                        file = new File(img_path);                        if (Integer.parseInt(Build.VERSION.SDK) < 14) {                            actualimagecursor.close();                        }                        ImageSize imageSize = ImageSizeUtil                                .getImageViewSize(iv_preview);                        // 2、压缩图片                        // 获得图片的宽和高，并不把图片加载到内存中                        BitmapFactory.Options options = new BitmapFactory.Options();                        options.inJustDecodeBounds = true;                        BitmapFactory.decodeFile(img_path, options);                        options.inSampleSize = ImageSizeUtil.caculateInSampleSize(                                options, imageSize.width, imageSize.height);                        // 使用获得到的InSampleSize再次解析图片                        options.inJustDecodeBounds = false;                        bitmap = BitmapFactory.decodeFile(img_path, options);                    }else{                        //获取图片                        Bundle extras = data.getExtras();                        bitmap = (Bitmap) extras.get("data");                    }                    iv_preview.setImageBitmap(bitmap);            }else if(requestCode == 2){                if(file != null){                    //压缩图片                    compressionImage();                }            }        } catch (Exception e) {            Log.e("Exception", e.getMessage(), e);        }    }    /**     * 压缩图片     */    private void compressionImage() {        /*ImageSize imageSize = ImageSizeUtil                .getImageViewSize(iv_preview);*/        // 2、压缩图片        // 获得图片的宽和高，并不把图片加载到内存中        BitmapFactory.Options options = new BitmapFactory.Options();        options.inJustDecodeBounds = true;        BitmapFactory.decodeFile(file.getAbsolutePath(), options);        /*options.inSampleSize = ImageSizeUtil.caculateInSampleSize(                options, imageSize.width, imageSize.height);*/        options.inSampleSize = 8;        // 使用获得到的InSampleSize再次解析图片        options.inJustDecodeBounds = false;        bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);        iv_preview.setImageBitmap(bitmap);    }

就这么简单，就这么任性搞定选择图片和拍照上传获取不到图片问题

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