前言
在做上一个项目时深深受到了图片上传的苦恼。图片上传主要分为两个部分，首先要获取图片，而获取图片可以分为从文件获取或者拍照获取。第二个部分才是上传图片，两个部分都是走了不少弯路。由于Android系统的碎片化比较严重，我们可能出现在第一台机子上能获取图片，但是换一个机子就不能获取图片的问题，并且在Android6.0，7.0之后也要做一定的适配，这样对于开发者来说，无疑很蛋疼。由于也是初学者，很多东西没有考虑到，适配起来也是有点难度的。
这几天也是从github上找到了一个库（地址在这TakePhoto），经过简单的学习之后，发现用起来还是蛮简单的，并且在不同机型之间都能达到同样的效果。更重要的是可以根据不同配置达到不同的效果
接下来看下用法
获取图片
1） 获取TakePhoto对象
一） 通过继承的方式
继承TakePhotoActivity、TakePhotoFragmentActivity、TakePhotoFragment三者之一。
通过getTakePhoto()获取TakePhoto实例进行相关操作。
重写以下方法获取结果
void takeSuccess(TResult result); void takeFail(TResult result,String msg); void takeCancel();
这种方法使用起来虽然简单，但是感觉定制性不高，必须继承指定的Activity，而 有时我们已经封装好了BaseActivity，不想再改了。有时候通过继承无法满足实际项目的需求。
二） 通过组装的方式去使用
实现TakePhoto.TakeResultListener,InvokeListener接口。
在 onCreate,onActivityResult,onSaveInstanceState方法中调用TakePhoto对用的方法。
重写onRequestPermissionsResult(int requestCode,String[] permissions,int[] grantResults)，添加如下代码。
@Override
public void onRequestPermissionsResult(int requestCode,int[] grantResults) {
super.onRequestPermissionsResult(requestCode,permissions,grantResults);
//以下代码为处理Android6.0、7.0动态权限所需
TPermissionType type=PermissionManager.onRequestPermissionsResult(requestCode,grantResults);
PermissionManager.handlePermissionsResult(this,type,invokeParam,this);
}
重写TPermissionType invoke(InvokeParam invokeParam)方法，添加如下代码：
@Override
public TPermissionType invoke(InvokeParam invokeParam) {
TPermissionType type=PermissionManager.checkPermission(TContextWrap.of(this),invokeParam.getMethod());
if(TPermissionType.WAIT.equals(type)){
this.invokeParam=invokeParam;
}
return type;
}
添加如下代码获取TakePhoto实例：
/**
* 获取TakePhoto实例
* @return
*/
public TakePhoto getTakePhoto(){
if (takePhoto==null){
takePhoto= (TakePhoto) TakePhotoInvocationHandler.of(this).bind(new TakePhotoImpl(this,this));
}
return takePhoto;
}
2）自定义UI
不仅可以对于参数自定义，也可以对于UI的自定义，比如自定义相册，自定义Toolbar,自定义状态栏，自定义提示文字，自定义裁切工具（需要使用自带的TakePhoto裁剪才行）。
3）通过TakePhoto对象获取图片
支持从相册获取，也支持拍照，相关Api
* 从相机获取图片并裁剪 * @param outPutUri 图片裁剪之后保存的路径 * @param options 裁剪配置 */ void onPickFromCaptureWithCrop(Uri outPutUri,CropOptions options); /** * 从相册中获取图片并裁剪 * @param outPutUri 图片裁剪之后保存的路径 * @param options 裁剪配置 */ void onPickFromGalleryWithCrop(Uri outPutUri,CropOptions options); /** * 从文件中获取图片并裁剪 * @param outPutUri 图片裁剪之后保存的路径 * @param options 裁剪配置 */ void onPickFromDocumentsWithCrop(Uri outPutUri,CropOptions options); /** * 图片多选，并裁切 * @param limit 最多选择图片张数的限制 * @param options 裁剪配置 * */ void onPickMultipleWithCrop(int limit,CropOptions options);
4）裁剪配置
CropOptions 用于裁剪的配置类，可以对图片的裁剪比例，最大输出大小，以及是否使用TakePhoto自带的裁剪工具进行裁剪等，进行个性化配置。
压缩图片 onEnableCompress(CompressConfig config,boolean showCompressDialog)
指定压缩工具 takePhoto里面自带压缩算法，也可以通过第三方的Luban进行压缩
对于TakePhoto的二次封装
封装是对第二种方法的封装，主要参考了第一种的思想封装的。
关于TakePhoto的库代码全部封装到一个TakePhotoUtil工具类中，看代码：
public class TakePhotoUtil implements TakePhoto.TakeResultListener,InvokeListener {
private static final String TAG = TakePhotoUtil.class.getName();
private TakePhoto takePhoto;
private InvokeParam invokeParam;
private Activity activity;
private Fragment fragment;
public TakePhotoUtil(Activity activity){
this.activity = activity;
}
public TakePhotoUtil(Fragment fragment){
this.fragment = fragment;
}
/**
* 获取TakePhoto实例
* @return
*/
public TakePhoto getTakePhoto(){
if (takePhoto==null){
takePhoto= (TakePhoto) TakePhotoInvocationHandler.of(this).bind(new TakePhotoImpl(activity,this));
}
return takePhoto;
}
public void onCreate(Bundle savedInstanceState){
getTakePhoto().onCreate(savedInstanceState);
}
public void onSaveInstanceState(Bundle outState){
getTakePhoto().onSaveInstanceState(outState);
}
public void onActivityResult(int requestCode,int resultCode,Intent data){
getTakePhoto().onActivityResult(requestCode,resultCode,data);
}
public void onRequestPermissionsResult(int requestCode,int[] grantResults) {
PermissionManager.TPermissionType type=PermissionManager.onRequestPermissionsResult(requestCode,grantResults);
PermissionManager.handlePermissionsResult(activity,this);
}
/**
*
* @param result
*/
@Override
public void takeSuccess(TResult result) {
if(listener != null){
listener.takeSuccess(result);
}
// deleteCachePic();
}
@Override
public void takeFail(TResult result,String msg) {
if(listener != null){
listener.takeFail(result,msg);
}
// deleteCachePic();
}
@Override
public void takeCancel() {
if(listener != null){
listener.takeCancel();
}
}
public void deleteCachePic(){
File file=new File(Environment.getExternalStorageDirectory(),"/takephoto/");
if(!file.exists()) return;
File[] files = file.listFiles();
for (File f: files) {
f.delete();
}
}
public interface TakePhotoListener{
void takeSuccess(TResult result);
void takeFail(TResult result,String msg);
void takeCancel();
}
public TakePhotoListener listener;
public void setTakePhotoListener(SimpleTakePhotoListener listener){
this.listener = listener;
}
public static class SimpleTakePhotoListener implements TakePhotoListener{
@Override
public void takeSuccess(TResult result) {
}
@Override
public void takeFail(TResult result,String msg) {
}
@Override
public void takeCancel() {
}
}
@Override
public PermissionManager.TPermissionType invoke(InvokeParam invokeParam) {
PermissionManager.TPermissionType type=PermissionManager.checkPermission(TContextWrap.of(activity),invokeParam.getMethod());
if(PermissionManager.TPermissionType.WAIT.equals(type)){
this.invokeParam=invokeParam;
}
return type;
}
/**
*
* @param select_type
*/
public void takePhoto(Select_type select_type,SimpleTakePhotoListener listener){
takePhoto(select_type,null,listener);
}
public void takePhoto(Select_type select_type,PhotoConfigOptions cropOptions,SimpleTakePhotoListener listener){
if (takePhoto == null){
Toast.makeText(activity,"请先开启照片功能",Toast.LENGTH_SHORT).show();
return;
}
setTakePhotoListener(listener);
if(cropOptions == null){
cropOptions = new PhotoConfigOptions();
}
cropOptions.configCompress(); //压缩配置
cropOptions.configTakePhoto(); //拍照配置
File file=new File(Environment.getExternalStorageDirectory(),"/takephoto/"+System.currentTimeMillis() + ".jpg");
if (!file.getParentFile().exists())file.getParentFile().mkdirs();
Uri imageUri = Uri.fromFile(file);
switch (select_type){
case PICK_BY_SELECT: //从相册获取
if(cropOptions.limit > 1){
if(cropOptions.crop == true){
takePhoto.onPickMultipleWithCrop(cropOptions.limit,cropOptions.getCropOptions());
}else {
takePhoto.onPickMultiple(cropOptions.limit);
}
}
if(cropOptions.chooseFromFile){
if(cropOptions.crop == true){
takePhoto.onPickFromDocumentsWithCrop(imageUri,cropOptions.getCropOptions());
}else {
takePhoto.onPickFromDocuments();
}
}else {
if(cropOptions.crop == true){
takePhoto.onPickFromGalleryWithCrop(imageUri,cropOptions.getCropOptions());
}else {
takePhoto.onPickFromGallery();
}
}
break;
case PICK_BY_TAKE: //拍照获取
if(cropOptions.crop == true){
takePhoto.onPickFromCaptureWithCrop(imageUri,cropOptions.getCropOptions());
}else {
takePhoto.onPickFromCapture(imageUri);
}
break;
default:
break;
}
}
/**
* 图片的裁剪配置选项内部类
*/
public class PhotoConfigOptions{
//裁剪配置
private boolean crop = true; //是否裁剪
private boolean withWonCrop = true; //是否采用自带的裁剪工具，默认选取第三方的裁剪工具
private boolean cropSize = true; //尺寸还是比例
//压缩配置
private boolean useOwnCompressTool = true; //使用自带的压缩工具
private boolean isCompress = true; //是否压缩
private boolean showProgressBar = true; //显示压缩进度条
// private
private int maxSize = 102400;
//选择图片配置
private boolean useOwnGallery = true; //选择使用自带的相册
private boolean chooseFromFile = false; //从文件获取图片
private int limit = 1; //选择最多图片的配置，选择多张图片会自动切换到TakePhoto自带相册
//其它配置
private boolean savePic = true; //选择完之后是否保存图片
private boolean correctTool = false; //纠正拍照的照片旋转角度
private int height = 800;
private int width = 800;
/**
* 裁剪相关配置
* @return
*/
public CropOptions getCropOptions(){
if(crop == false) return null;
CropOptions.Builder builder = new CropOptions.Builder();
if(cropSize){
builder.setOutputX(width).setOutputY(height);
}else {
builder.setAspectX(width).setAspectY(height);
}
builder.setWithOwnCrop(withWonCrop); //默认采用第三方配置
return builder.create();
}
/**
* 图片压缩相关配置
*/
public void configCompress(){
if(isCompress == false) {
takePhoto.onEnableCompress(null,false);
return;
}
CompressConfig config;
if(useOwnCompressTool){
config = new CompressConfig.Builder()
.setMaxSize(maxSize)
.setMaxPixel(width>height?width:height)
.enableReserveRaw(savePic)
.create();
}else {
LubanOptions options = new LubanOptions.Builder()
.setMaxHeight(height)
.setMaxWidth(maxSize)
.create();
config = CompressConfig.ofLuban(options);
config.enableReserveRaw(savePic);
}
takePhoto.onEnableCompress(config,showProgressBar);
}
public void configTakePhoto(){
TakePhotoOptions.Builder builder = new TakePhotoOptions.Builder();
if(useOwnGallery){
builder.setWithOwnGallery(true);
}
if(correctTool){
builder.setCorrectImage(true);
}
takePhoto.setTakePhotoOptions(builder.create());
}
public void setCrop(boolean crop) {
this.crop = crop;
}
public void setWithWonCrop(boolean withWonCrop) {
this.withWonCrop = withWonCrop;
}
public void setCropSize(boolean cropSize) {
this.cropSize = cropSize;
}
public void setUseOwnCompressTool(boolean useOwnCompressTool) {
this.useOwnCompressTool = useOwnCompressTool;
}
public void setCompress(boolean compress) {
isCompress = compress;
}
public void setShowProgressBar(boolean showProgressBar) {
this.showProgressBar = showProgressBar;
}
public void setMaxSize(int maxSize) {
this.maxSize = maxSize;
}
public void setUseOwnGallery(boolean useOwnGallery) {
this.useOwnGallery = useOwnGallery;
}
public void setChooseFromFile(boolean chooseFromFile) {
this.chooseFromFile = chooseFromFile;
}
public void setLimit(int limit) {
this.limit = limit;
}
public void setSavePic(boolean savePic) {
this.savePic = savePic;
}
public void setCorrectTool(boolean correctTool) {
this.correctTool = correctTool;
}
public void setHeight(int height) {
this.height = height;
}
public void setWidth(int width) {
this.width = width;
}
}
/**
* 照片获取方式,从相册获取或拍照处理
*/
public enum Select_type{
PICK_BY_SELECT,PICK_BY_TAKE
}
}
封装了一个BaseTakePhotoActivity，里面的代码如下:
protected TakePhotoUtil takePhotoUtil;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
takePhotoUtil = new TakePhotoUtil(this);
if(useTakePhoto()){
takePhotoUtil.onCreate(savedInstanceState);
}
super.onCreate(savedInstanceState);
}
@Override
protected void onSaveInstanceState(Bundle outState) {
if(useTakePhoto()){
takePhotoUtil.onSaveInstanceState(outState);
}
super.onSaveInstanceState(outState);
}
@Override
protected void onActivityResult(int requestCode,Intent data) {
if(useTakePhoto()){
takePhotoUtil.onActivityResult(requestCode,data);
}
super.onActivityResult(requestCode,data);
}
@Override
public void onRequestPermissionsResult(int requestCode,int[] grantResults) {
if(useTakePhoto()){
takePhotoUtil.onRequestPermissionsResult(requestCode,grantResults);
}
super.onRequestPermissionsResult(requestCode,grantResults);
}
protected boolean useTakePhoto(){
return false;
}
其他对于业务的封装，可以再封装一个BaseActivity，继承自BaseTakePhotoActivity，这样就可以不影响BaseActivity的使用，如果我们在主Activity中使用获取图片的功能需要两步
1）开启TakePhoto功能
@Override
protected boolean useTakePhoto() {
return true;
}
2 ) 获取图片
takePhotoUtil.takePhoto(TakePhotoUtil.Select_type.PICK_BY_TAKE,new TakePhotoUtil.SimpleTakePhotoListener(){
@Override
public void takeSuccess(TResult result) {
String s = result.getImage().getCompressPath();
Bitmap bitmap = BitmapFactory.decodeFile(s);
iv.setImageBitmap(bitmap);
}
});
takePhoto（）的第一个参数是一个枚举类型的参数，分别为从相册获取和拍照获取，第二个参数为获取成功失败监听，有三个回调，由于有些回调不是必须的，所以对Listener做了一个适配，只需要回调想要的方法即可，获取成功之后就可以通过TResult封装的参数获取想要的图片以及图片地址。对于获取到的图片地址就可以做一些上传处理。
图片上传
可以借助okhttp3实现上传功能
MultipartBody.Builder builder = new MultipartBody.Builder().setType(MultipartBody.FORM);
RequestBody requestBody = RequestBody.create(MediaType.parse(MULTIPART_FORM_DATA),file);
MultipartBody.Part part = MultipartBody.Part.createFormData("dir",file.getName(),requestBody);
builder.addPart(part);
Request.Builder builder1 = new Request.Builder().url(url).post(builder.build());
Request request = builder1.build();
HttpUtils.client.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call,IOException e) {
}
@Override
public void onResponse(Call call,Response response) throws IOException {
if(response.isSuccessful()){
final String s = response.body().string();
((Activity)context).runOnUiThread(new Runnable() {
@Override
public void run() {
}
});
}
}
});
大致代码如上
最后
由于当时没有找到这个库，于是跑去问公司另一个做Android的，看了下他封装的代码，确实也是值得学习的，他的代码也是适配到了Android7.0，贴下它的代码，方便以后学习：
public class CameraUtil {
private static final int REQUEST_CAPTURE_CAMERA = 1221;
private static final int REQUEST_CROP = 1222;
private static final int REQUEST_OPEN_ALBUM = 1223;
private static final String TAG = "Camera";
private static Uri mCacheUri;
private CameraUtil() {
}
@RequiresPermission(allOf = {Manifest.permission.READ_EXTERNAL_STORAGE,Manifest.permission.WRITE_EXTERNAL_STORAGE,Manifest.permission.CAMERA})
public static void getImageFromCamera(Activity activity) {
if (checkExternalStorageState(activity)) {
activity.startActivityForResult(getImageFromCamera(activity.getApplicationContext()),REQUEST_CAPTURE_CAMERA);
}
}
@RequiresPermission(allOf = {Manifest.permission.READ_EXTERNAL_STORAGE,Manifest.permission.CAMERA})
@Deprecated
public static void getImageFromCamera(Fragment fragment) {
if (checkExternalStorageState(fragment.getContext())) {
fragment.startActivityForResult(getImageFromCamera(fragment.getContext()),REQUEST_CAPTURE_CAMERA);
}
}
private static Intent getImageFromCamera(Context context) {
Intent getImageByCamera = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
mCacheUri = getCachePhotoUri(context.getApplicationContext());
getImageByCamera.putExtra(MediaStore.EXTRA_OUTPUT,mCacheUri);
getImageByCamera.putExtra("outputFormat",Bitmap.CompressFormat.JPEG.toString());
grantUriPermission(context,getImageByCamera,mCacheUri);
return getImageByCamera;
}
private static boolean checkExternalStorageState(Context context) {
if (TextUtils.equals(Environment.getExternalStorageState(),Environment.MEDIA_MOUNTED)) {
return true;
}
Toast.makeText(context.getApplicationContext(),"请确认已经插入SD卡",Toast.LENGTH_LONG).show();
return false;
}
@SuppressWarnings("ResultOfMethodCallIgnored")
public static File getCachePhotoFile() {
File file = new File(Environment.getExternalStorageDirectory(),"/lenso/cache/CameraTakePhoto" + System.currentTimeMillis() + ".jpg");
if (!file.getParentFile().exists()) file.getParentFile().mkdirs();
return file;
}
private static Uri getCachePhotoUri(Context context) {
return FileProvider.getUriForFile(context,getAuthority(context),getCachePhotoFile());
}
private static Uri getCachePhotoUri(Context context,File file) {
return FileProvider.getUriForFile(context,file);
}
public static void onActivityResult(Activity activity,int requestCode,Intent data,OnActivityResultListener listener) {
onActivityResult(activity,requestCode,data,listener);
}
/**
* getCachePhotoFile().getParentFile().getAbsolutePath()
* @param dir
* @return
*/
public static boolean deleteDir(File dir) {
if (dir != null && dir.isDirectory()) {
String[] children = dir.list();
for (int i = 0; i < children.length; i++) {
boolean success = deleteDir(new File(dir,children[i]));
if (!success) {
return false;
}
}
}
return dir.delete();
}
public static File saveBitmap(Bitmap bitmap) {
File file = getCachePhotoFile();
if (bitmap == null || bitmap.isRecycled()) return file;
FileOutputStream outputStream = null;
try {
outputStream = new FileOutputStream(file);
bitmap.compress(Bitmap.CompressFormat.JPEG,100,outputStream);
} catch (FileNotFoundException e) {
e.printStackTrace();
} finally {
if (outputStream != null)
try {
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
bitmap.recycle();
}
return file;
}
public static void copy(File file,File point) {
if (!file.exists()) return;
if (!point.getParentFile().exists()) point.getParentFile().mkdirs();
BufferedInputStream inputStream = null;
BufferedOutputStream outputStream = null;
try {
inputStream = new BufferedInputStream(new FileInputStream(file));
outputStream = new BufferedOutputStream(new FileOutputStream(point));
byte[] buff = new byte[1024 * 1024 * 2];
int len;
while ((len = inputStream.read(buff)) != -1) {
outputStream.write(buff,len);
outputStream.flush();
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
closeStream(inputStream);
closeStream(outputStream);
}
}
private static void closeStream(Closeable closeable) {
if (closeable != null) try {
closeable.close();
} catch (IOException e) {
e.printStackTrace();
}
}
public static void onActivityResult(Activity activity,CropOption crop,OnActivityResultListener listener) {
if (resultCode == Activity.RESULT_CANCELED) return;
Uri uri;
switch (requestCode) {
case REQUEST_OPEN_ALBUM:
uri = data.getData();
if (uri != null) {
mCacheUri = getCachePhotoUri(activity);
copy(new File(getRealFilePath(activity,uri)),new File(getRealFilePath(activity,mCacheUri)));
} else {
Bitmap bitmap = data.getParcelableExtra("data");
File file = saveBitmap(bitmap);
mCacheUri = getCachePhotoUri(activity,file);
}
case REQUEST_CAPTURE_CAMERA:
uri = mCacheUri;
if (listener != null) {
listener.requestCaptureCamera(getRealFilePath(activity,uri),null);
}
if (crop == null) return;
crop.setSource(uri);
Intent intent = crop.create();
grantUriPermission(activity,intent,crop.getOutput());
activity.startActivityForResult(intent,REQUEST_CROP);
break;
case REQUEST_CROP:
if (listener != null && data != null)
{
listener.requestCrop(getRealFilePath(activity,mCacheUri),(Bitmap) data.getParcelableExtra("data"));
}
break;
}
}
@RequiresPermission(allOf = {Manifest.permission.READ_EXTERNAL_STORAGE,Manifest.permission.WRITE_EXTERNAL_STORAGE})
public static void getImageFromAlbum(Activity activity) {
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType("image/*");//相片类型
activity.startActivityForResult(intent,REQUEST_OPEN_ALBUM);
}
@RequiresPermission(allOf = {Manifest.permission.READ_EXTERNAL_STORAGE,Manifest.permission.WRITE_EXTERNAL_STORAGE})
@Deprecated
public static void getImageFromAlbum(Fragment fragment) {
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType("image/*");//相片类型
fragment.startActivityForResult(intent,REQUEST_OPEN_ALBUM);
}
public interface OnActivityResultListener {
void requestCaptureCamera(String path,Bitmap bitmap);
void requestCrop(String path,Bitmap bitmap);
}
/**
* Try to return the absolute file path from the given Uri
*
* @param context context
* @param uri uri
* @return the file path or null
*/
public static String getRealFilePath(final Context context,final Uri uri) {
if (null == uri) return null;
String path = uri.toString();
if (path.startsWith("content://" + getAuthority(context) + "/rc_external_path")) {
return path.replace("content://" + getAuthority(context) + "/rc_external_path",Environment.getExternalStorageDirectory().getAbsolutePath());
}
final String scheme = uri.getScheme();
String data = null;
if (scheme == null)
data = uri.getPath();
else if (ContentResolver.SCHEME_FILE.equals(scheme)) {
data = uri.getPath();
} else if (ContentResolver.SCHEME_CONTENT.equals(scheme)) {
Cursor cursor = context.getContentResolver().query(uri,new String[]{MediaStore.Images.ImageColumns.DATA},null);
if (null != cursor) {
if (cursor.moveToFirst()) {
int index = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
if (index > -1) {
data = cursor.getString(index);
}
}
cursor.close();
}
}
return data;
}
private static String getAuthority(Context context) {
return context.getPackageName() + ".FileProvider";
}
public static class CropOption {
private int aspectX=1;//x比例
private int aspectY=1;//y比例
private boolean returnData = false;//是返回bitmap，否返回uri
private String outputFormat;//输出流保存格式JPG PNG ...
private int outputX=200;//返回的bitmap宽
private int outputY=200;//返回的bitmap高
private Uri output;//输出流保存路径
private Uri source;//需要截图的图片uri
private boolean noFaceDetection = true;//是否关闭人脸识别功能
// get和set方法省略
private Intent create() {
if (source == null)
throw new NullPointerException("没有设置图片uri");
Intent intent = new Intent("com.android.camera.action.CROP");
intent.setDataAndType(source,"image/*");
intent.putExtra("crop","true");
if (aspectX > 0)
intent.putExtra("aspectX",aspectX);
if (aspectY > 0)
intent.putExtra("aspectY",aspectY);
if (outputX > 0)
intent.putExtra("outputX",outputX);
if (outputY > 0)
intent.putExtra("outputY",outputY);
intent.putExtra("return-data",returnData);
if (!returnData) {
output = output == null ? source : output;
outputFormat = outputFormat == null ? Bitmap.CompressFormat.JPEG.toString() : outputFormat;
intent.putExtra(MediaStore.EXTRA_OUTPUT,output);
intent.putExtra("outputFormat",outputFormat);
intent.setType("image/*");
intent.putExtra("noFaceDetection",noFaceDetection);
}
return intent;
}
}
private static void grantUriPermission(Context context,Intent intent,Uri uri) {
List<ResolveInfo> resInfoList = context.getPackageManager().queryIntentActivities(intent,PackageManager.MATCH_DEFAULT_ONLY);
for (ResolveInfo resolveInfo : resInfoList) {
String packageName = resolveInfo.activityInfo.packageName;
context.grantUriPermission(packageName,uri,Intent.FLAG_GRANT_WRITE_URI_PERMISSION | Intent.FLAG_GRANT_READ_URI_PERMISSION);
}
}
}
//xml文件部分
<?xml version="1.0" encoding="utf-8"?>
<resources >
<paths>
<external-path path="" name="rc_external_path" />
</paths>
</resources>
//清单文件注册部分
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="com.lenso.FileProvider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/file_path" />
</provider>
也封装了从本地获取，以及拍照获取的相关功能，可以值得学习，毕竟不少坑。
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持编程小技巧。