Android拍照和选取图片之前需要先获取对应的权限。
需要了解的请看 Android6.0权限管理
下面默认已经获取权限。
测试机型：
vivo V3Max A android 5.1.1
Honor NOTE 8（型号：EDI-AL10） android 7.0
适配Android7.0。
Uri.fromFile() 方法被 FileProvider.getUriForFile() 代替。
第一步：再清单文件中配置provider。
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="com.app.takephoto.fileprovider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/file_paths" />
</provider>
第二步：在res目录下新建xml目录，在xml目录下新建file_paths.xml文件。（名字可以随便起，只要和清单文件中配置的一样就行），配置为path=""意思是将整个根目录给共享出去，如果设置为path="/abc"就只能获取/adc目录下文件的uri了。
<?xml version="1.0" encoding="utf-8"?>
<resources xmlns:android="http://schemas.android.com/apk/res/android">
<paths>
<root-path
name="root"
path="" />
<files-path
name="files"
path="" />
<cache-path
name="cache"
path="" />
<external-path
name="external"
path="" />
<external-files-path
name="external_file_path"
path="" />
<external-cache-path
name="external_cache_path"
path="" />
</paths>
</resources>
第三步：在需要文件Uri的地方这样调用
public static Uri getUriForN(Context context, File file) {
return FileProvider.getUriForFile(context, BuildConfig.APPLICATION_ID + ".fileprovider", file);
}
准备
public class AppUtil {
//存放照片的目录
public static String getImageRootPath() {
String path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/takephoto";
File file = new File(path);
if (!file.exists()) {
file.mkdirs();
}
return path;
}
}
拍照
调用PhotoUtil拍照方法
private File photoFile;
photoFile = new File(AppUtil.getImageRootPath(), System.currentTimeMillis() + "camer.jpg");
PhotoUtil.takePhoto(context, photoFile, requestCode);
PhotoUtil
public static void takePhoto(Context context, File outPutFile, int requestCode) {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {// >=7.0
Uri outputUri = getUriForN(context, outPutFile);
intent.putExtra(MediaStore.EXTRA_OUTPUT, outputUri);
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
} else {
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(outPutFile));
}
((Activity) context).startActivityForResult(intent, requestCode);
}
从相册选择
调用PhotoUtil从相册选择方法
PhotoUtil.choosePhoto(context, requestCode);
PhotoUtil
public static void choosePhoto(Context context, int requestCode) {
//用这种方法就不用区分>=19来获取路径了
// Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
// ((Activity) context).startActivityForResult(intent, requestCode);
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.setType("image/*");
((Activity) context).startActivityForResult(intent, requestCode);
}
onActivityResult 回调
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_CODE_TAKE_PHOTO) {//拍照
if (resultCode == Activity.RESULT_OK) {
photoUtil.zoomPhoto(this, photoFile, zoomFile, REQUEST_CODE_ZOOM_PHOTO);
} else if (resultCode == Activity.RESULT_CANCELED) {
Log.e(TAG, "拍照已取消");
}
} else if (requestCode == REQUEST_CODE_CHOOSE_PHOTO) {
if (resultCode == Activity.RESULT_OK) {
if (data != null) {
Uri data_choose_photo = data.getData();
String path = photoUtil.getPath(this, data_choose_photo);
photoUtil.zoomPhoto(this, new File(path), zoomFile, REQUEST_CODE_ZOOM_PHOTO);
}
} else if (resultCode == Activity.RESULT_CANCELED) {
Log.e(TAG, "选择照片已取消");
}
} else if (requestCode == REQUEST_CODE_ZOOM_PHOTO) {
if (resultCode == Activity.RESULT_OK) {
Bitmap bitmap = BitmapFactory.decodeFile(zoomFile.getAbsolutePath());
iv.setImageBitmap(bitmap);
} else if (requestCode == Activity.RESULT_CANCELED) {
Log.e(TAG, "裁剪照片已取消");
}
}
}
针对图库得到图片路径
//针对图库得到图片路径
public static String getPath(Context context, Uri uri) {
String imagePath = null;
if (Build.VERSION.SDK_INT >= 19) {
if (DocumentsContract.isDocumentUri(context, uri)) {
String docId = DocumentsContract.getDocumentId(uri);
if ("com.android.providers.media.documents".equals(uri.getAuthority())) {
String id = docId.split(":")[1];
String selection = MediaStore.Images.Media._ID + "=" + id;
imagePath = getImagePath(context, MediaStore.Images.Media.EXTERNAL_CONTENT_URI, selection);
} else if ("com.android.providers.downloads.documents".equals(uri.getAuthority())) {
Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(docId));
imagePath = getImagePath(context, contentUri, null);
}
} else if (ContentResolver.SCHEME_CONTENT.equalsIgnoreCase(uri.getScheme())) {
imagePath = getImagePath(context, uri, null);
} else if ( ContentResolver.SCHEME_FILE.equalsIgnoreCase(uri.getScheme())) {
imagePath = uri.getPath();
}
} else {
imagePath = getImagePath(context, uri, null);
}
return imagePath;
}
private static String getImagePath(Context context, Uri uri, String selection) {
String Path = null;
Cursor cursor = context.getContentResolver().query(uri, null, selection, null, null);
if (cursor != null) {
if (cursor.moveToFirst()) {
Path = cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media.DATA));
}
cursor.close();
}
return Path;
}
如有错误欢迎补充和指正~~
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