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The details are as follows

Description:

Android Select camera and system album

Code:

1. Open the system camera and the system photo album tool class

Package com.gxjl.pe.gxjlpesdk.util; import android.Manifest;import android.app.Activity;import android.app.ActivityManager;import android.app.AlertDialog;import android.content.Context;import android.content.DialogInterface;import android.content.Intent;import android.content.pm.PackageManager;import android.graphics.Bitmap;import android.net.Uri;import android.os.Build;import android.provider.MediaStore;import android.support.v4.app.ActivityCompat;import android.support.v4.content.ContextCompat;import android.support.v4.content.FileProvider Import android.widget.Toast; import java.io.ByteArrayOutputStream;import java.io.File;import java.io.IOException;import java.util.ArrayList;import java.util.List; / * Picture tools * Created by xiaoshuai on 2018-8-17. * / public class ImgUtil {public static final int TAKE_PHOTO = 1 / public static final int CHOOSE_PHOTO = 2 / choose album public static final int REQUEST_CODE_CAMERA = 3 / / camera permission request public static final int REQUEST_CODE_ALBUM = 4ramp / album permission request public static Uri imageUri / / camera photo save address / * Select picture From the gallery, camera * * @ param activity context * / public static void choicePhoto (final Activity activity) {/ / uses the system Dialog as the selection pop-up box new AlertDialog.Builder (activity) .setTitle ("upload profile picture") / / sets the dialog box title .setPositiveButton ("Photo", new DialogInterface.OnClickListener () {/ / add OK button @ Override public void onClick (DialogInterface dialog) Int which) {if (Build.VERSION.SDK_INT > = 23) {/ / check camera permissions ArrayList permissions = new ArrayList () If (activity.checkSelfPermission (Manifest.permission.CAMERA)! = PackageManager.PERMISSION_GRANTED) {permissions.add (Manifest.permission.CAMERA);} if (permissions.size () = = 0) {/ / have permission to jump / / turn on the camera-compatible with 7.0openCamera (activity);} else {activity.requestPermissions (new String [permissions.size ()]), REQUEST_CODE_CAMERA) }} else {/ / turn on camera-compatible with 7.0openCamera (activity);}). SetNegativeButton ("system photo album", new DialogInterface.OnClickListener () {@ Override public void onClick (DialogInterface dialog, int which) {/ / if you have permission to apply, please call openAlbum () if (ContextCompat.checkSelfPermission (activity, Manifest.permission.WRITE_EXTERNAL_STORAGE)! = PackageManager.PERMISSION_GRANTED) {ActivityCompat.requestPermissions (activity, new String [] {Manifest.permission.WRITE_EXTERNAL_STORAGE}, REQUEST_CODE_ALBUM) in onRequestPermissionsResult permission return in Activity. } else {openAlbum (activity);}. Show (); / / display this dialog box in the keystroke response event} / * turn on the camera * compatible with 7.0 * * @ param activity * / public static void openCamera (Activity activity) {/ / create a File object to store the photographed picture File outputImage = new File (activity.getExternalCacheDir (), "output_image.jpg") Try {if (outputImage.exists ()) {outputImage.delete ();} outputImage.createNewFile ();} catch (IOException e) {e.printStackTrace ();} if (Build.VERSION.SDK_INT)

< 24) { imageUri = Uri.fromFile(outputImage); } else { //Android 7.0系统开始 使用本地真实的Uri路径不安全,使用FileProvider封装共享Uri //参数二:fileprovider绝对路径 com.dyb.testcamerademo：项目包名 imageUri = FileProvider.getUriForFile(activity, "com.mandaotech.ewallet.fileprovider", outputImage); } // 启动相机程序 Intent intent = new Intent("android.media.action.IMAGE_CAPTURE"); intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri); activity.startActivityForResult(intent, TAKE_PHOTO); } /** * 打开图库 * @param activity */ public static void openAlbum(Activity activity) { //调用系统图库的意图 Intent choosePicIntent = new Intent(Intent.ACTION_PICK, null); choosePicIntent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "image/*"); activity.startActivityForResult(choosePicIntent, CHOOSE_PHOTO); //打开系统默认的软件 //Intent intent = new Intent("android.intent.action.GET_CONTENT"); //intent.setType("image/*"); //activity.startActivityForResult(intent, CHOOSE_PHOTO); // 打开相册 } /** * 得到byte[] * 这里对传入的图片Uri压缩到1M以内，并转换为byte[]后返回 * * @param activity 上下文 * @param uri 传入图片的Uri * @return byte[] */ public static byte[] getImgByteFromUri(Activity activity, Uri uri) throws IOException { Bitmap bitmap = MediaStore.Images.Media.getBitmap(activity.getContentResolver(), uri); ByteArrayOutputStream out = new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);//100表示不压缩，直接放到out里面 int options = 90;//压缩比例 while (out.toByteArray().length / 1024 >

(200) {/ / cycle to determine if the compressed image is larger than 100kb, greater than continue compressing out.reset (); / / reset baos to clear baos bitmap.compress (Bitmap.CompressFormat.JPEG, options, out); / / here compress options%, to store compressed data in baos options-= 10 beat / reduce 10} byte [] bs = out.toByteArray () each time; return bs;}}

Camera selection: using a fixed address to choose a large image, the code block above is adapted to 7.0. because the Android 7.0system starts to use the local real Uri path is not safe, use FileProvider encapsulation to share Uri. The values of android:name, exported, android:grantUriPermissions and android:authorities are fixed, and the value of android:authorities is: "name of your own project package" .fileprovider.

2. Confirmation of application authority

Click to apply for permission in the tool class to check whether the user has agreed to the permission in Activity.

@ Override public void onRequestPermissionsResult (int requestCode, String [] permissions, int [] grantResults) {switch (requestCode) {case REQUEST_CODE_ALBUM:// album storage permission if (grantResults.length > 0 & & grantResults [0] = = PackageManager.PERMISSION_GRANTED) {ImgUtil.openAlbum (this);} else {UiUtil.showToast (this, "consent permission is required to select a gallery");} break Case REQUEST_CODE_CAMERA:// camera permission if (grantResults [0] = = PackageManager.PERMISSION_GRANTED) {/ / allow ImgUtil.openCamera (OcrHandReviewActivity.this);} else {/ / reject UiUtil.showToast (this, "you can only use the code scanning function if you agree to the camera permission");} break; default:}}

3. Put the camera and photo album back

Get photos and selected pictures in activity

/ / camera, photo album, cut return @ Override public void onActivityResult (int requestCode, int resultCode, Intent data) {/ / correctly return if (resultCode = = RESULT_OK) {switch (requestCode) {case ImgUtil.TAKE_PHOTO:// camera returns Log.e ("return camera", ImgUtil.imageUri.toString ()) GlideApp.with (ElecIdPAActivity.this) .load (ImgUtil.imageUri) .skipMemoryCache (true) .diskCacheStrategy (DiskCacheStrategy.NONE) .into (iv_zhengmain_photo); break; case ImgUtil.CHOOSE_PHOTO:// album returns try {if (data! = null) {/ / album returns Uri uri = data.getData () Log.e ("return to album", uri.toString ()); GlideApp.with (ElecIdPAActivity.this) .load (uri) .skipMemoryCache (true) .diskCacheStrategy (DiskCacheStrategy.NONE) .into (iv_zhengmain_photo);}} catch (Exception e) {e.printStackTrace (); UiUtil.showToast (this, "Picture selection failure");} break }} else {UiUtil.showToast (this, "Picture selection failed");}}

4. AndroidManifest.xml permission statement

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