Java Android在使用改进的multipart上传图像时遇到问题?
我在尝试使用改型将图像上载到服务器时遇到以下错误,api接收头授权令牌,_method=“put”和Image=“imageName.jpg”作为参数,其他一切都是可选的,如有帮助,将不胜感激 java.io.FileNotFoundException:/storage/simulated/0/Download/space-wallper-21.jpg:open失败:EACCES(权限被拒绝) 加上这个Java Android在使用改进的multipart上传图像时遇到问题?,java,android,android-studio,retrofit,retrofit2,Java,Android,Android Studio,Retrofit,Retrofit2,我在尝试使用改型将图像上载到服务器时遇到以下错误,api接收头授权令牌,_method=“put”和Image=“imageName.jpg”作为参数,其他一切都是可选的,如有帮助,将不胜感激 java.io.FileNotFoundException:/storage/simulated/0/Download/space-wallper-21.jpg:open失败:EACCES(权限被拒绝) 加上这个 <uses-permission android:name="android.perm
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
在清单文件的清单标记内。但是,请确保它在应用程序标记外。对于低于Android 6.0的棉花糖:
public class MainActivity extends AppCompatActivity implements ActivityCompat.OnRequestPermissionsResultCallback{
private static final int REQUEST_WRITE_PERMISSION = 786;
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
if (requestCode == REQUEST_WRITE_PERMISSION && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
openFilePicker();//do your job
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
requestPermission();
}
private void requestPermission() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
requestPermissions(new String[]{android.Manifest.permission.WRITE_EXTERNAL_STORAGE}, REQUEST_WRITE_PERMISSION);
} else {
openFilePicker();//do your job
}
}
}
在清单中添加权限:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
有关更多信息,请参阅下面的链接
注意:不要忘记在清单文件中添加权限必须在清单中添加写入外部存储的权限吗?是的,我现在添加了它,但仍然收到相同的错误。是的,我现在添加了它,但在失败时抛出时仍然收到相同的错误。如果您使用的是Marshmellow或更高版本,则需要请求运行时中的权限。你可以在这里了解更多()
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
public class MainActivity extends AppCompatActivity implements ActivityCompat.OnRequestPermissionsResultCallback{
private static final int REQUEST_WRITE_PERMISSION = 786;
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
if (requestCode == REQUEST_WRITE_PERMISSION && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
openFilePicker();//do your job
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
requestPermission();
}
private void requestPermission() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
requestPermissions(new String[]{android.Manifest.permission.WRITE_EXTERNAL_STORAGE}, REQUEST_WRITE_PERMISSION);
} else {
openFilePicker();//do your job
}
}
}