App在StrictMode(严格)模式下运行模式下报的异常
E/StrictMode: null
java.lang.Throwable: file:// Uri exposed through Intent.getData()
at android.os.StrictMode.onFileUriExposed(StrictMode.java:1757)
at android.net.Uri.checkFileUriExposed(Uri.java:2346)
at android.content.Intent.prepareToLeaveProcess(Intent.java:8045)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1506)
at android.app.Activity.startActivityForResult(Activity.java:3930)
at android.app.Activity.startActivityForResult(Activity.java:3890)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:843)
at android.app.Activity.startActivity(Activity.java:4213)
at android.support.v4.app.ActivityCompatJB.startActivity(ActivityCompatJB.java:26)
at android.support.v4.app.ActivityCompat.startActivity(ActivityCompat.java:133)
····
at Holder$1.onClick(MailAnnexAdapter.java:75)
at android.view.View.performClick(View.java:5204)
at android.view.View$PerformClick.run(View.java:21153)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
定位异常方法
public void openFile(@NonNull Activity activity, @NonNull File file) {
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.addCategory(Intent.CATEGORY_DEFAULT);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
/**异常这行代码**/
intent.setDataAndType(Uri.fromFile(file), "image/*");
ActivityCompat.startActivity(activity, intent, null);
}
具体异常位置
Uri.fromFile(file)
传递软件包网域外的
file://URI 可能给接收器留下无法访问的路径。因此，尝试传递file://URI 会触发FileUriExposedException。分享私有文件内容的推荐方法是使用 FileProvider。
意思就是从7.0起不能使用绝对Uri地址，使用FileProvider转换URL
那就来看怎么使用FileProvider使用
原来方法改为
@Override
public void openFile(@NonNull Activity activity, @NonNull File file) {
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.addCategory(Intent.CATEGORY_DEFAULT);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_GRANT_READ_URI_PERMISSION);
Uri contentUri = FileProvider.getUriForFile(activity, OFRConstants.Authorities.AUTHORITIES_FILEPROVIDER, file);
String contentMIMEType = activity.getContentResolver().getType(contentUri);
intent.setDataAndType(contentUri, contentMIMEType);
try {
ActivityCompat.startActivity(activity, intent, null);
} catch (ActivityNotFoundException e) {
ToastUtils.showToast(activity, R.string.not_found_open_tool);
}
}
public static class Authorities {
public static final String AUTHORITIES_FILEPROVIDER = "com.mysiga.offer.fileprovider";
}
在AndroidManifest.xml定义
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="com.mysiga.offer.fileprovider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/paths_file" />
</provider>
xml下的paths_file.xml文件
<?xml version="1.0" encoding="utf-8"?>
<paths>
<external-path
name="annex"
path="mysiga/annex/" />
</paths>
就解决报错了。
