相機

Intent i = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
//指定拍照後圖片名稱
String photoName = System.currentTimeMillis() + ".jpg";
//設定拍照後圖片存放位置ROOT_PATH:指定位置
currentCaptureFilePath = ROOT_PATH + File.separator + photoName;
Uri imageUri = Uri.fromFile(new File(currentCaptureFilePath));
startActivityForResult(i, REQUEST_CODE_4);
 

onActivityResult

//拿到檔案就可以得到很多你需要的資訊,包括路徑大小等
File captureFile = new File(currentCaptureFilePath );
//設定給ImageView控制元件
mImageView.setImageURI(Uri.fromFile(captureFile));

相簿

Intent intent = new Intent(Intent.ACTION_PICK);
// 如果限制上傳到伺服器的圖片型別時可以直接寫如:"image/jpeg,image/png等的型別"
intent .setDataAndType(MediaStore.Images
 
.Media.EXTERNAL_CONTENT_URI, "image/*");
startActivityForResult(intent , REQUEST_CODE_3);

onActivityResult

方式1

Uri uri = data.getData();
mImageView.setImageURI(uri);

方式2

Cursor cursor = getContentResolver().query(uri, new String[]{MediaStore.Images.Media.DATA}, null, null, null); 
if (null != cursor) {
    cursor.moveToFirst
 
();
    String path =   
    cursor.getString(cursor.getColumnIndex(
    MediaStore.Images.Media.DATA));
    cursor.close();
    File picFile = new File(path);
    mImageView.setImageURI(Uri.fromFile(picFile));
}

注意:要記得許可權

<uses-permission android:name="android.permission.CAMERA" />
<uses-permissionandroid:name="android.permission.WRITE_EXTERNAL_STORAGE" />