照相机 相册 上传照片

权限：

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

    private static final int PHOTO_GRAPH = 2;// 拍照
    private static final int PHOTO_ZOOM = 3; // 缩放
    private static final int PHOTO_RESULT = 4;// 结果
    private static final String IMAGE_UNSPECIFIED = "image/*";


AlertDialog.Builder builder=new AlertDialog.Builder(InfoActivity.this);
            builder.setTitle("头像");
            builder.setNegativeButton("取消", new DialogInterface.OnClickListener(){
                @Override
                public void onClick(DialogInterface dialog, int which) {

                }
            });
            String[] items=new String[]{"相册上传","拍摄上传"};
            builder.setItems(items, new DialogInterface.OnClickListener(){
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    if(which == 0){
                        //从相册获取图片
                        Intent intent = new Intent(Intent.ACTION_PICK, null);
                        intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, IMAGE_UNSPECIFIED);
                        startActivityForResult(intent, PHOTO_ZOOM);
                    }
                    else if(which == 1){
                        //从拍照获取图片

                        StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder();
                        StrictMode.setVmPolicy(builder.build());
                        builder.detectFileUriExposure();                        Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);                        intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(Environment

                                .getExternalStorageDirectory(),"temp.jpg")));
                        startActivityForResult(intent, PHOTO_GRAPH);
                    }
                }
            });
            builder.create().show();


   @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        //获取图片路径
        if (resultCode == 0) return;

        // 拍照
        if (requestCode == PHOTO_GRAPH) {
            // 设置文件保存路径
            File picture = new File(Environment.getExternalStorageDirectory()
                    + "/temp.jpg");
            startPhotoZoom(Uri.fromFile(picture));
        }

        if (data == null) return;

        // 读取相册缩放图片
        if (requestCode == PHOTO_ZOOM) {
            startPhotoZoom(data.getData());
        }

        // 处理结果
        if (requestCode == PHOTO_RESULT) {
            Bundle extras = data.getExtras();
            if (extras != null) {
                Bitmap photo = extras.getParcelable("data");
                ByteArrayOutputStream stream = new ByteArrayOutputStream();
                photo.compress(Bitmap.CompressFormat.JPEG, 100, stream);// (0-100)压缩文件
                //此处可以把Bitmap保存到sd卡中，具体请看：http://www.cnblogs.com/linjiqin/archive/2011/12/28/2304940.html
                imageView_head.setImageBitmap(photo); //把图片显示在ImageView控件上
                myApp = (MyGlobal)getApplication();
                myApp.saveUserHead(user_id, photo);
                EventMessage eventMessage = new EventMessage();
                eventMessage.setWhich(3);
                EventBus.getDefault().post(eventMessage);
            }
        }
    }

    public void startPhotoZoom(Uri uri) {
        Intent intent = new Intent("com.android.camera.action.CROP");
        intent.setDataAndType(uri, IMAGE_UNSPECIFIED);
        intent.putExtra("crop", "true");
        // aspectX aspectY 是宽高的比例，输入需要是整数，不然无效，其中1比1是圆形

        intent.putExtra("aspectX", 1);
        intent.putExtra("aspectY", 1);
        // outputX outputY 是裁剪图片宽高
        intent.putExtra("outputX", 500);
        intent.putExtra("outputY", 500);
        intent.putExtra("return-data", true);
        startActivityForResult(intent, PHOTO_RESULT);
    }

 考虑版本适配与机型适配的问题后private CircleImageView iv_avatar;

    private String TAG = "Main2Activity";

    private final int GALLERY_REQUSET_CODE = 0;
    private final int CROP_REQUEST_CODE = 1;
    private final int GALLERY_REQUSET_CODE_KITKAT = 2;

    private Uri uritempFile;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        FindView();

        iv_avatar.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
　　　　　　　　　//相册上传
                routeToGallery();
　　　　　　　　　//拍照上传
               /*

               StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder();
               StrictMode.setVmPolicy(builder.build());
               builder.detectFileUriExposure();
               //创建文件夹
               File appDir = new File(Environment.getExternalStorageDirectory(), getString(R.string.app_name));
               if (!appDir.exists()) {
                   appDir.mkdirs();
               }
               Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
               Uri pictureUri = Uri.fromFile(new File(Environment.getExternalStorageDirectory(),getString(R.string.app_name)+"/temp.png"));
               intent.putExtra(MediaStore.EXTRA_OUTPUT, pictureUri);
               startActivityForResult(intent, PHOTO_GRAPH);
               */

            }
        });
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        switch (requestCode) {
            case GALLERY_REQUSET_CODE:
                handleGalleryResult(resultCode, data);
                break;
            case GALLERY_REQUSET_CODE_KITKAT:
                handleGalleryKitKatResult(resultCode, data);
                break;
            case CROP_REQUEST_CODE:
                // 此处crop正常返回resultCode也不为RESULT_OK
                if(data == null) return;
                Bundle bundle = data.getExtras();
                if (Build.MODEL.contains("MI")) {
                    try {
                        Bitmap bitmap = BitmapFactory.decodeStream(getContentResolver().openInputStream(uritempFile));
                        BitmapDrawable bd = new BitmapDrawable(bitmap);
                        iv_avatar.setImageDrawable(bd);
                    } catch (FileNotFoundException e) {
                        Log.e("Exception PHOTO_RESULT", e.getMessage(), e);
                    }
                } else {
                    Bitmap face = bundle.getParcelable("data");
                    BitmapDrawable bd = new BitmapDrawable(face);
                    //my_index_background.setImageBitmap(face);
                    iv_avatar.setImageDrawable(bd);
                }
                break;
//            case PHOTO_GRAPH:
//                // 设置文件保存路径
//                File picture = new File(Environment.getExternalStorageDirectory(), getString(R.string.app_name) + "/temp.png");
//                Uri uri = Uri.fromFile(picture);
//                routeToCrop(uri);
//                break;

            default:
                break;
        }
    }

    //打开相册
    private void routeToGallery() {
        Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
        intent.addCategory(Intent.CATEGORY_OPENABLE);
        intent.setType("image/*");
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            startActivityForResult(intent, GALLERY_REQUSET_CODE_KITKAT);
        } else {
            startActivityForResult(intent, GALLERY_REQUSET_CODE);
        }
    }

    // 裁剪
    private void routeToCrop(Uri uri) {
        Intent intent = new Intent("com.android.camera.action.CROP");
        intent.setDataAndType(uri, "image/*");

        intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION
                | Intent.FLAG_GRANT_READ_URI_PERMISSION);

        intent.putExtra("crop", true);
        // intent.putExtra("circleCrop", "true");
        intent.putExtra("aspectX", 1);
        intent.putExtra("aspectY", 1);
        intent.putExtra("outputX", 150);
        intent.putExtra("outputY", 150);

        if (Build.MODEL.contains("MI")) {
            uritempFile = Uri.parse("file://" + "/" + Environment.getExternalStorageDirectory().getPath() + "/" + "small.jpg");
            intent.putExtra(MediaStore.EXTRA_OUTPUT, uritempFile);
            intent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());
        } else {
            intent.putExtra("return-data", true);
        }

        startActivityForResult(intent, CROP_REQUEST_CODE);
    }

    private File saveBitmap(Bitmap bitmap) throws IOException {
        File file = new File(getExternalCacheDir(), "face-cache");
        if (!file.exists()) file.createNewFile();
        try (OutputStream out = new FileOutputStream(file)) {
            bitmap.compress(Bitmap.CompressFormat.JPEG, 100, out);
        }
        return file;
    }

    private void handleGalleryResult(int resultCode, Intent data) {
        if(resultCode != RESULT_OK) return;
        String path = data.getData().getPath();
        Bitmap image = BitmapFactory.decodeFile(path);
        File faceFile;
        try {
            faceFile = saveBitmap(image);
        } catch (IOException e) {
            e.printStackTrace();
            return;
        }
        Uri fileUri = Uri.fromFile(faceFile);
        routeToCrop(fileUri);
    }

    // Result uri is "content://" after Android 4.4
    private void handleGalleryKitKatResult(int resultCode, Intent data) {
        if(resultCode != RESULT_OK) return;
        Uri contentUri = data.getData();
        if (contentUri == null) return;
        File faceFile;
        try {
            ParcelFileDescriptor parcelFileDescriptor = getContentResolver().openFileDescriptor(contentUri, "r");
            FileDescriptor fileDescriptor = parcelFileDescriptor.getFileDescriptor();
            Bitmap image = BitmapFactory.decodeFileDescriptor(fileDescriptor);
            faceFile = saveBitmap(image);
        } catch (IOException e) {
            e.printStackTrace();
            return;
        }
        Uri fileUri;
        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            // Android 7.0 "file://" uri权限适配
            fileUri = FileProvider.getUriForFile(this,
                    "com.example.m_evolution.fileprovider", faceFile);
        } else {
            fileUri = Uri.fromFile(faceFile);
        }
        routeToCrop(fileUri);
    }

    private void FindView(){
        iv_avatar = findViewById(R.id.iv_user_avatar);
    }

 在manifests.xml中加入：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="com.example.m_evolution">
    
    <application>
        <provider
            android:name="android.support.v4.content.FileProvider"
            android:authorities="com.example.m_evolution.fileprovider"
            android:exported="false"
            android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/provider_paths" />
        </provider>
    </application>

</manifest>

provider_paths.xml：

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <paths>
        <external-cache-path name="mycache" path="./" />
    </paths>
</resources>