我想将文件上传到ftp。我正在使用此代码。但是每当我尝试从存储中取出图像时，它总是会让我异常无法选择文件。这是在我将android studio从android studio 1.5升级到最新版之后发生的事情。我也放弃了gradle build，但这并没有解决问题。你能告诉我为什么会这样吗？
Manifest.java
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.amobi.newlomapodfix">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity
android:name=".MainActivity"
android:label="Article"
android:theme="@style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".ShopActivity"
android:label="Shop"
android:theme="@style/AppTheme.NoActionBar" />
<activity
android:name=".ReadArtikelActivity"
android:label="Article" />
<activity
android:name=".SignUpActivity"
android:label="Register" />
<activity
android:name=".LoginActivity"
android:label="Login" />
<activity
android:name=".AccountActivity"
android:label="@string/title_activity_account"
android:theme="@style/AppTheme.NoActionBar" />
<activity android:name=".EditAccountActivity" />
<activity android:name=".UploadActivity" />
<activity android:name=".CartActivity" />
<activity android:name=".DetilBarangActivity"></activity>
<!-- ATTENTION: This was auto-generated to add Google Play services to your project for
App Indexing. See https://g.co/AppIndexing/AndroidStudio for more information. -->
<meta-data
android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />
</application>
</manifest>
UploadActivity.java
import android.app.ProgressDialog;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.StrictMode;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
import com.amobi.newlomapodfix.util.SessionManagement;
import com.google.android.gms.appindexing.Action;
import com.google.android.gms.appindexing.AppIndex;
import com.google.android.gms.common.api.GoogleApiClient;
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.jibble.simpleftp.SimpleFTP;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
public class UploadActivity extends AppCompatActivity {
private static final String URL_ID_TRANS = "http://amobipets.azurewebsites.net/getIdImage.php";
private static final String URL_INSERT_IMAGE = "http://amobipets.azurewebsites.net/insertImage.php";
private static final String URL_EDIT_TRANS = "http://amobipets.azurewebsites.net/editTrans.php";
private static final String TAG_ID = "id";
private static final String TAG_IMAGE_NAME = "image_name";
private static final String TAG_STATUS = "Status";
private static final String TAG_PESAN = "message";
private static final String TAG_HASIL = "result";
private static final String TAG_TRANS = "message";
private static final String TAG_IMAGE_ID = "id_image";
ProgressDialog pDialog;
JSONParser jparser = new JSONParser();
ArrayList<HashMap<String, String>> namelist, idList, imageList;
JSONArray names, names1, names2;
private static int RESULT_LOAD_IMG = 1;
String imgDecodableString = null;
Button btn;
static final String FTP_HOST = "************";
static final String FTP_USER = "************";
static final String FTP_PASS = "************";
String name, vid;
/**
* ATTENTION: This was auto-generated to implement the App Indexing API.
* See https://g.co/AppIndexing/AndroidStudio for more information.
*/
private GoogleApiClient client2;
SessionManagement sessionManagement;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_upload);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
sessionManagement =new SessionManagement(this);
idList = new ArrayList<HashMap<String, String>>();
imageList = new ArrayList<HashMap<String, String>>();
Bundle bun = getIntent().getExtras();
vid = bun.getString("id");
btn = (Button) findViewById(R.id.buttonUploadPicture);
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (imgDecodableString == null) {
Toast.makeText(UploadActivity.this, "Choose image first, please", Toast.LENGTH_LONG);
} else {
File f = new File(imgDecodableString);
name = f.getName();
uploadFile(f);
}
}
});
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client2 = new GoogleApiClient.Builder(this).addApi(AppIndex.API).build();
}
public void loadImagefromGallery(View view) {
// Create intent to Open Image applications like Gallery, Google Photos
Intent galleryIntent = new Intent(Intent.ACTION_PICK,
MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
// Start the Intent
startActivityForResult(galleryIntent, RESULT_LOAD_IMG);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
try {
// When an Image is picked
if (requestCode == RESULT_LOAD_IMG && resultCode == RESULT_OK
&& null != data) {
// Get the Image from data
Uri selectedImage = data.getData();
String[] filePathColumn = {MediaStore.Images.Media.DATA};
// Get the cursor
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
// Move to first row
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String filename = cursor.getString(columnIndex);
imgDecodableString = cursor.getString(columnIndex);
cursor.close();
File f = new File("" + imgDecodableString);
f.getName();
ImageView imgView = (ImageView) findViewById(R.id.imgView);
// Set the Image in ImageView after decoding the String
imgView.setImageBitmap(BitmapFactory
.decodeFile(imgDecodableString));
} else {
Toast.makeText(this, "Pilih Bukti Transaksi",
Toast.LENGTH_LONG).show();
}
} catch (Exception e) {
Toast.makeText(this, "Failed to Choose", Toast.LENGTH_LONG)
.show();
}
}
public void uploadFile(File fileName) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
SimpleFTP ftp=new SimpleFTP();
try {
ftp.connect(FTP_HOST, 21, FTP_USER, FTP_PASS);
ftp.bin();
ftp.cwd("/img/");
ftp.stor(fileName);
ftp.disconnect();
} catch (Exception e) {
e.printStackTrace();
try {
ftp.disconnect();
Toast.makeText(UploadActivity.this, "disconnect", Toast.LENGTH_LONG).show();
} catch (Exception e2) {
e2.printStackTrace();
Toast.makeText(UploadActivity.this, "failed", Toast.LENGTH_LONG).show();
}
}
}
@Override
public void onStart() {
super.onStart();
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client2.connect();
Action viewAction = Action.newAction(
Action.TYPE_VIEW, // TODO: choose an action type.
"Upload Page", // TODO: Define a title for the content shown.
// TODO: If you have web page content that matches this app activity's content,
// make sure this auto-generated web page URL is correct.
// Otherwise, set the URL to null.
Uri.parse("http://host/path"),
// TODO: Make sure this auto-generated app deep link URI is correct.
Uri.parse("android-app://com.amobi.newlomapodfix/http/host/path")
);
AppIndex.AppIndexApi.start(client2, viewAction);
}
@Override
public void onStop() {
super.onStop();
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
Action viewAction = Action.newAction(
Action.TYPE_VIEW, // TODO: choose an action type.
"Upload Page", // TODO: Define a title for the content shown.
// TODO: If you have web page content that matches this app activity's content,
// make sure this auto-generated web page URL is correct.
// Otherwise, set the URL to null.
Uri.parse("http://host/path"),
// TODO: Make sure this auto-generated app deep link URI is correct.
Uri.parse("android-app://com.amobi.newlomapodfix/http/host/path")
);
AppIndex.AppIndexApi.end(client2, viewAction);
client2.disconnect();
}
/*******
* Used to file upload and show progress
**********/
/* public class MyTransferListener implements FTPDataTransferListener {
public void started() {
btn.setVisibility(View.GONE);
// Transfer started
Toast.makeText(getBaseContext(), " Upload Started ...", Toast.LENGTH_SHORT).show();
}
public void transferred(int length) {
// Yet other length bytes has been transferred since the last time this
// method was called
Toast.makeText(getBaseContext(), " transferred ..." + length, Toast.LENGTH_SHORT).show();
}
public void completed() {
btn.setVisibility(View.VISIBLE);
// Transfer completed
Toast.makeText(getBaseContext(), " completed ...", Toast.LENGTH_LONG).show();
new InsertImage(name).execute();
}
public void aborted() {
btn.setVisibility(View.VISIBLE);
// Transfer aborted
Toast.makeText(getBaseContext(), " transfer aborted , please try again...", Toast.LENGTH_SHORT).show();
}
public void failed() {
btn.setVisibility(View.VISIBLE);
// Transfer failed
System.out.println(" failed ...");
}
}
*/
class InsertImage extends AsyncTask<String, String, String> {
int sukses = 0;
String img;
public InsertImage(String img) {
this.img = img;
}
@Override
protected void onPreExecute() {
}
@Override
protected String doInBackground(String... args) {
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("image_name", img));
try {
JSONObject json = jparser.makeHttpRequest(URL_INSERT_IMAGE, "GET", params);
if (json != null) {
sukses = json.getInt(TAG_PESAN);
if (sukses == 1) {
namelist = new ArrayList<HashMap<String, String>>();
Log.d("Semua Nama: ", json.toString());
names = json.getJSONArray(TAG_HASIL);
for (int i = 0; i < names.length(); i++) {
JSONObject c = names.getJSONObject(i);
String img = c.getString(TAG_IMAGE_NAME);
HashMap<String, String> map = new HashMap<String, String>();
map.put(TAG_IMAGE_NAME, img);
namelist.add(map);
}
}
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(String file_url) {
if (sukses == 1) {
new getID().execute();
}
}
}
public class getID extends AsyncTask<String, String, String> {
int sukses = 0;
public getID() {
pDialog = new ProgressDialog(UploadActivity.this);
}
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog.setMessage("Loading . . .");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
@Override
protected String doInBackground(String... args) {
List<NameValuePair> params = new ArrayList<NameValuePair>();
try {
JSONObject json = jparser.makeHttpRequest(URL_ID_TRANS, "GET", params);
if (json != null) {
sukses = json.getInt(TAG_PESAN);
if (sukses == 1) {
idList = new ArrayList<HashMap<String, String>>();
Log.d("Semua Nama: ", json.toString());
names1 = json.getJSONArray(TAG_HASIL);
for (int i = 0; i < names1.length(); i++) {
JSONObject c = names1.getJSONObject(i);
String id = c.getString(TAG_ID);
HashMap<String, String> map = new HashMap<String, String>();
map.put(TAG_ID, id);
idList.add(map);
}
}
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(String s) {
pDialog.dismiss();
String id_image;
if(idList.size()==0)
{
id_image="1";
}
else {id_image = idList.get(0).get(TAG_ID);}
new editTrans(id_image, "Uploaded", vid).execute();
}
}
class editTrans extends AsyncTask<String, String, String> {
int sukses = 0;
String id_image, status, id_trans;
public editTrans(String id_image, String status, String id_trans) {
this.id_image = id_image;
this.status = status;
this.id_trans = id_trans;
}
@Override
protected void onPreExecute() {
}
@Override
protected String doInBackground(String... args) {
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("id_image", id_image));
params.add(new BasicNameValuePair("Status", status));
params.add(new BasicNameValuePair("id_trans", id_trans));
try {
JSONObject json = jparser.makeHttpRequest(URL_EDIT_TRANS, "GET", params);
if (json != null) {
sukses = json.getInt(TAG_PESAN);
if (sukses == 1) {
imageList = new ArrayList<HashMap<String, String>>();
Log.d("Semua Nama: ", json.toString());
names2 = json.getJSONArray(TAG_HASIL);
for (int i = 0; i < names2.length(); i++) {
JSONObject c = names2.getJSONObject(i);
String stat = c.getString(TAG_STATUS);
String image = c.getString(TAG_IMAGE_ID);
HashMap<String, String> map = new HashMap<String, String>();
map.put(TAG_IMAGE_ID, image);
map.put(TAG_STATUS, stat);
imageList.add(map);
}
}
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(String file_url) {
if (sukses == 1) {
Intent i = new Intent(UploadActivity.this, AccountActivity.class);
startActivity(i);
}
}
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
finish();
return true;
case R.id.action_settings:
return true;
case R.id.logout:
sessionManagement.logoutUser();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}
的build.gradle
申请插件：＆＃39; com.android.application＆＃39;
android {
compileSdkVersion 23
buildToolsVersion "23.0.2"
defaultConfig {
applicationId "com.amobi.newlomapodfix"
minSdkVersion 17
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
lintOptions {
abortOnError false
}
}
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
testCompile 'junit:junit:4.12'
compile project(':captcha')
compile 'org.jbundle.util.osgi.wrapped:org.jbundle.util.osgi.wrapped.org.apache.http.client:4.1.2'
compile 'com.android.support:recyclerview-v7:23.1.1'
compile 'com.android.support:support-v4:23.2.1'
compile 'com.android.support:appcompat-v7:23.1.1'
compile 'com.android.support:design:23.2.1'
compile 'com.squareup.picasso:picasso:2.5.2'
compile 'com.squareup.retrofit:retrofit:1.9.0'
compile 'com.android.support:cardview-v7:23.1.1'
compile 'com.google.android.gms:play-services-appindexing:8.1.0'
compile files('libs/simpleftp.jar')
}
答案 0 :(得分：0)
您的目标是API 23必须获得
以下的运行时权限 private static final int REQUEST_RUNTIME_PERMISSION = 1;
// Global Variable
void checkPremission() {
//select which permission you want
final String permission = Manifest.permission.WRITE_EXTERNAL_STORAGE;
// if in fragment use getActivity()
if (ContextCompat.checkSelfPermission(ActivityName.this, permission)
!= PackageManager.PERMISSION_GRANTED) {
if (ActivityCompat.shouldShowRequestPermissionRationale(ActivityName.this, permission)) {
} else {
ActivityCompat.requestPermissions(ActivityName.this, new String[]{permission}, REQUEST_CAMERA_PERMISSION);
}
} else {
// you have permission go ahead
// get access to storage
}
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
switch (requestCode) {
case REQUEST_RUNTIME_PERMISSION:
final int numOfRequest = grantResults.length;
final boolean isGranted = numOfRequest == 1
&& PackageManager.PERMISSION_GRANTED == grantResults[numOfRequest - 1];
if (isGranted) {
// you have permission go ahead
// get access to storage
}else{
// you dont have permission show toast
}
break;
default:
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
}
}