解决调用系统拍照targetSdkVersion>=24的FileUriExposedException
1.通过Application解决
File file = new File(fileName);
Uri uri = Uri.fromFile(file)
Application 中onCreate()添加
// android 7.0系统解决拍照的问题
StrictMode.VmPolicy.Builder builder =new StrictMode.VmPolicy.Builder();
StrictMode.setVmPolicy(builder.build());
builder.detectFileUriExposure();
2.通过判断targetSdkVersion版本，，大于等于24，则通过FileProvider来实现
(1)
if (Build.VERSION.SDK_INT >=24) {
imageUri = FileProvider.getUriForFile(this,"com.zzh.onresumedemo.PhotoActivity",outputImage);
}else {
imageUri = Uri.fromFile(outputImage);
}
(2)
AndroidManifest中设置provider
android:authorities="com.zzh.onresumedemo.PhotoActivity"
android:name="android.support.v4.content.FileProvider"
android:exported="false"
android:grantUriPermissions="true">
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/file_paths">
划线部分authorities填写摄像头调用的activity
(3)
file_pahts 再res中建立xml文件夹，new file_paths.xml,填写
<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<external-path name="my_images> paht="."/>
</paths>
