Android7.0调用相机时出现新的错误：
android.os.FileUriExposedException: file:///storage/emulated/0/photo.jpeg exposed beyond app through ClipData.Item.getUri()
解决办法：
在Application的onCreat()方法中添加以下代码：
StrictMode.VmPolicy.Builder builder =new StrictMode.VmPolicy.Builder();
StrictMode.setVmPolicy(builder.build());
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
builder.detectFileUriExposure();
}
或者
// 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();
