lbry-android/src/main/java/io/lbry/browser/MainActivity.java

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package io.lbry.browser;
import android.annotation.SuppressLint;
import android.annotation.TargetApi;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.app.Activity;
import android.app.ActivityManager;
import android.content.BroadcastReceiver;
import android.content.ContentUris;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.content.SharedPreferences;
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import android.database.Cursor;
import android.Manifest;
import android.net.Uri;
import android.provider.DocumentsContract;
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import android.provider.MediaStore;
import android.provider.Settings;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.NotificationManagerCompat;
import android.support.v4.content.ContextCompat;
import android.telephony.SmsMessage;
import android.telephony.TelephonyManager;
import android.widget.Toast;
import com.brentvatne.react.ReactVideoPackage;
import com.dylanvann.fastimage.FastImageViewPackage;
import com.facebook.react.common.LifecycleState;
import com.facebook.react.modules.core.DefaultHardwareBackBtnHandler;
import com.facebook.react.ReactRootView;
import com.facebook.react.ReactInstanceManager;
import com.facebook.react.bridge.Arguments;
import com.facebook.react.bridge.ReactContext;
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import com.facebook.react.bridge.WritableArray;
import com.facebook.react.bridge.WritableMap;
import com.facebook.react.modules.core.DeviceEventManagerModule;
import com.facebook.react.modules.core.PermissionAwareActivity;
import com.facebook.react.modules.core.PermissionListener;
import com.facebook.react.shell.MainReactPackage;
import com.facebook.react.ReactRootView;
import com.reactnativecommunity.asyncstorage.AsyncStoragePackage;
import com.rnfs.RNFSPackage;
import com.swmansion.gesturehandler.react.RNGestureHandlerEnabledRootView;
import com.swmansion.gesturehandler.react.RNGestureHandlerPackage;
import com.swmansion.reanimated.ReanimatedPackage;
import com.RNFetchBlob.RNFetchBlobPackage;
import io.lbry.browser.reactpackages.LbryReactPackage;
import io.lbry.browser.reactmodules.BackgroundMediaModule;
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import java.io.File;
import java.io.UnsupportedEncodingException;
import java.math.BigInteger;
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import java.net.URISyntaxException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
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import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Random;
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import org.json.JSONObject;
import org.json.JSONArray;
import org.json.JSONException;
import org.reactnative.camera.RNCameraPackage;
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public class MainActivity extends Activity implements DefaultHardwareBackBtnHandler, PermissionAwareActivity {
private static Activity currentActivity = null;
private static final int OVERLAY_PERMISSION_REQ_CODE = 101;
private static final int STORAGE_PERMISSION_REQ_CODE = 201;
private static final int PHONE_STATE_PERMISSION_REQ_CODE = 202;
private static final int RECEIVE_SMS_PERMISSION_REQ_CODE = 203;
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public static final int DOCUMENT_PICKER_RESULT_CODE = 301;
private BroadcastReceiver notificationsReceiver;
private BroadcastReceiver smsReceiver;
private BroadcastReceiver stopServiceReceiver;
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private BroadcastReceiver downloadEventReceiver;
private ReactRootView mReactRootView;
private ReactInstanceManager mReactInstanceManager;
public static final String SHARED_PREFERENCES_NAME = "LBRY";
public static final String SALT_KEY = "salt";
public static final String DEVICE_ID_KEY = "deviceId";
public static final String SOURCE_NOTIFICATION_ID_KEY = "sourceNotificationId";
public static final String SETTING_KEEP_DAEMON_RUNNING = "keepDaemonRunning";
public static List<Integer> downloadNotificationIds = new ArrayList<Integer>();
/**
* Flag which indicates whether or not the service is running. Will be updated in the
* onResume method.
*/
private boolean serviceRunning;
private boolean receivedStopService;
private PermissionListener permissionListener;
protected String getMainComponentName() {
return "LBRYApp";
}
@Override
protected void onCreate(Bundle savedInstanceState) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
// Request external storage permission on Android version >= 6
checkPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE,
STORAGE_PERMISSION_REQ_CODE,
"LBRY requires access to your device storage to be able to download files and media.",
this);
}
super.onCreate(savedInstanceState);
currentActivity = this;
// Register the stop service receiver (so that we close the activity if the user requests the service to stop)
registerStopReceiver();
// Register SMS receiver for handling verification texts
registerSmsReceiver();
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// Register the receiver to emit download events
registerDownloadEventReceiver();
// Start the daemon service if it is not started
serviceRunning = isServiceRunning(LbrynetService.class);
if (!serviceRunning) {
ServiceHelper.start(this, "", LbrynetService.class, "lbrynetservice");
}
mReactRootView = new RNGestureHandlerEnabledRootView(this);
mReactInstanceManager = ReactInstanceManager.builder()
.setApplication(getApplication())
.setBundleAssetName("index.android.bundle")
.setJSMainModulePath("index")
.addPackage(new MainReactPackage())
.addPackage(new AsyncStoragePackage())
.addPackage(new FastImageViewPackage())
.addPackage(new ReactVideoPackage())
.addPackage(new ReanimatedPackage())
.addPackage(new RNCameraPackage())
.addPackage(new RNFetchBlobPackage())
.addPackage(new RNFSPackage())
.addPackage(new RNGestureHandlerPackage())
.addPackage(new LbryReactPackage())
.setUseDeveloperSupport(true)
.setInitialLifecycleState(LifecycleState.RESUMED)
.build();
mReactRootView.startReactApplication(mReactInstanceManager, "LBRYApp", null);
registerNotificationsReceiver();
setContentView(mReactRootView);
}
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private void registerDownloadEventReceiver() {
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(DownloadManager.ACTION_DOWNLOAD_EVENT);
downloadEventReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String downloadAction = intent.getStringExtra("action");
String uri = intent.getStringExtra("uri");
String outpoint = intent.getStringExtra("outpoint");
String fileInfoJson = intent.getStringExtra("file_info");
if (uri == null || outpoint == null || fileInfoJson == null) {
return;
}
try {
String eventName = null;
JSONObject json = new JSONObject(fileInfoJson);
WritableMap fileInfo = JSONObjectToMap(json);
WritableMap params = Arguments.createMap();
params.putString("uri", uri);
params.putString("outpoint", outpoint);
params.putMap("fileInfo", fileInfo);
if (DownloadManager.ACTION_UPDATE.equals(downloadAction)) {
double progress = intent.getDoubleExtra("progress", 0);
params.putDouble("progress", progress);
eventName = "onDownloadUpdated";
} else {
eventName = (DownloadManager.ACTION_START.equals(downloadAction)) ? "onDownloadStarted" : "onDownloadCompleted";
}
ReactContext reactContext = mReactInstanceManager.getCurrentReactContext();
if (reactContext != null) {
reactContext.getJSModule(DeviceEventManagerModule.RCTDeviceEventEmitter.class).emit(eventName, params);
}
} catch (JSONException ex) {
// pass
}
}
};
registerReceiver(downloadEventReceiver, intentFilter);
}
private void registerStopReceiver() {
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(LbrynetService.ACTION_STOP_SERVICE);
stopServiceReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
MainActivity.this.receivedStopService = true;
MainActivity.this.finish();
}
};
registerReceiver(stopServiceReceiver, intentFilter);
}
private void registerNotificationsReceiver() {
// Background media receiver
IntentFilter filter = new IntentFilter();
filter.addAction(BackgroundMediaModule.ACTION_PLAY);
filter.addAction(BackgroundMediaModule.ACTION_PAUSE);
notificationsReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
ReactContext reactContext = mReactInstanceManager.getCurrentReactContext();
if (reactContext != null) {
if (BackgroundMediaModule.ACTION_PLAY.equals(action)) {
reactContext.getJSModule(DeviceEventManagerModule.RCTDeviceEventEmitter.class)
.emit("onBackgroundPlayPressed", null);
}
if (BackgroundMediaModule.ACTION_PAUSE.equals(action)) {
reactContext.getJSModule(DeviceEventManagerModule.RCTDeviceEventEmitter.class)
.emit("onBackgroundPausePressed", null);
}
}
}
};
registerReceiver(notificationsReceiver, filter);
}
public void registerSmsReceiver() {
if (!hasPermission(Manifest.permission.RECEIVE_SMS, this)) {
// don't create the receiver if we don't have the read sms permission
return;
}
IntentFilter smsFilter = new IntentFilter();
smsFilter.addAction("android.provider.Telephony.SMS_RECEIVED");
smsReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// Get the message
Bundle bundle = intent.getExtras();
if (bundle != null) {
Object[] pdus = (Object[]) bundle.get("pdus");
if (pdus != null && pdus.length > 0) {
SmsMessage sms = SmsMessage.createFromPdu((byte[]) pdus[0]);
String text = sms.getMessageBody();
if (text == null || text.trim().length() == 0) {
return;
}
// Retrieve verification code from the text message if it contains
// the strings "lbry", "verification code" and the colon (following the expected format)
text = text.toLowerCase();
if (text.indexOf("lbry") > -1 && text.indexOf("verification code") > -1 && text.indexOf(":") > -1) {
String code = text.substring(text.lastIndexOf(":") + 1).trim();
ReactContext reactContext = mReactInstanceManager.getCurrentReactContext();
if (reactContext != null) {
WritableMap params = Arguments.createMap();
params.putString("code", code);
reactContext.getJSModule(DeviceEventManagerModule.RCTDeviceEventEmitter.class)
.emit("onVerificationCodeReceived", params);
}
}
}
}
}
};
registerReceiver(smsReceiver, smsFilter);
}
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@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == OVERLAY_PERMISSION_REQ_CODE) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (!Settings.canDrawOverlays(this)) {
// SYSTEM_ALERT_WINDOW permission not granted...
}
}
}
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if (requestCode == DOCUMENT_PICKER_RESULT_CODE) {
ReactContext reactContext = mReactInstanceManager.getCurrentReactContext();
if (reactContext != null) {
if (resultCode == RESULT_OK) {
Uri fileUri = data.getData();
String filePath = getRealPathFromURI_API19(this, fileUri);
WritableMap params = Arguments.createMap();
params.putString("path", filePath);
reactContext.getJSModule(DeviceEventManagerModule.RCTDeviceEventEmitter.class)
.emit("onDocumentPickerFilePicked", params);
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} else if (resultCode == RESULT_CANCELED) {
// user canceled or request failed
reactContext.getJSModule(DeviceEventManagerModule.RCTDeviceEventEmitter.class)
.emit("onDocumentPickerCanceled", null);
}
}
}
}
public static Activity getActivity() {
Activity activity = new Activity();
activity = currentActivity;
return activity;
}
@Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
switch (requestCode) {
case STORAGE_PERMISSION_REQ_CODE:
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
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if (BuildConfig.DEBUG && !Settings.canDrawOverlays(this)) {
Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
Uri.parse("package:" + getPackageName()));
startActivityForResult(intent, OVERLAY_PERMISSION_REQ_CODE);
}
} else {
// Permission not granted. Show a message and terminate the application
Toast.makeText(this,
"LBRY requires access to your device storage to be able to download files and media." +
" Please enable the storage permission and restart the app.", Toast.LENGTH_LONG).show();
if (serviceRunning) {
ServiceHelper.stop(this, LbrynetService.class);
}
finish();
}
break;
case PHONE_STATE_PERMISSION_REQ_CODE:
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
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// Permission granted. Emit an onPhoneStatePermissionGranted event
ReactContext reactContext = mReactInstanceManager.getCurrentReactContext();
if (reactContext != null) {
reactContext.getJSModule(DeviceEventManagerModule.RCTDeviceEventEmitter.class)
.emit("onPhoneStatePermissionGranted", null);
}
} else {
// Permission not granted. Simply show a message.
Toast.makeText(this,
"No permission granted to read your device state. Rewards cannot be claimed.", Toast.LENGTH_LONG).show();
}
break;
case RECEIVE_SMS_PERMISSION_REQ_CODE:
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// Permission granted. Emit an onPhoneStatePermissionGranted event
ReactContext reactContext = mReactInstanceManager.getCurrentReactContext();
if (reactContext != null) {
reactContext.getJSModule(DeviceEventManagerModule.RCTDeviceEventEmitter.class)
.emit("onReceiveSmsPermissionGranted", null);
}
// register the receiver
if (smsReceiver == null) {
registerSmsReceiver();
}
} else {
// Permission not granted. Simply show a message.
Toast.makeText(this,
"No permission granted to receive your SMS messages. You may have to enter the verification code manually.",
Toast.LENGTH_LONG).show();
}
break;
}
if (permissionListener != null) {
permissionListener.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
}
public static String acquireDeviceId(Context context) {
TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
String id = null;
try {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
id = telephonyManager.getImei(); // GSM
if (id == null) {
id = telephonyManager.getMeid(); // CDMA
}
} else {
id = telephonyManager.getDeviceId();
}
} catch (SecurityException ex) {
// Maybe the permission was not granted? Try to acquire permission
checkPhoneStatePermission(context);
} catch (Exception ex) {
// id could not be obtained. Display a warning that rewards cannot be claimed.
}
if (id == null || id.trim().length() == 0) {
Toast.makeText(context, "Rewards cannot be claimed because we could not identify your device.", Toast.LENGTH_LONG).show();
}
SharedPreferences sp = context.getSharedPreferences(SHARED_PREFERENCES_NAME, Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sp.edit();
editor.putString(DEVICE_ID_KEY, id);
editor.commit();
return id;
}
@Override
public void invokeDefaultOnBackPressed() {
super.onBackPressed();
}
@Override
protected void onPause() {
super.onPause();
if (mReactInstanceManager != null) {
mReactInstanceManager.onHostPause(this);
}
}
@Override
protected void onResume() {
super.onResume();
SharedPreferences sp = getSharedPreferences(SHARED_PREFERENCES_NAME, Context.MODE_PRIVATE);
serviceRunning = isServiceRunning(LbrynetService.class);
if (!serviceRunning) {
ServiceHelper.start(this, "", LbrynetService.class, "lbrynetservice");
}
if (mReactInstanceManager != null) {
mReactInstanceManager.onHostResume(this, this);
}
}
@Override
protected void onDestroy() {
// check service running setting and end it here
SharedPreferences sp = getSharedPreferences(SHARED_PREFERENCES_NAME, Context.MODE_PRIVATE);
boolean shouldKeepDaemonRunning = sp.getBoolean(SETTING_KEEP_DAEMON_RUNNING, true);
if (!shouldKeepDaemonRunning) {
serviceRunning = isServiceRunning(LbrynetService.class);
if (serviceRunning) {
ServiceHelper.stop(this, LbrynetService.class);
}
}
if (notificationsReceiver != null) {
unregisterReceiver(notificationsReceiver);
notificationsReceiver = null;
}
if (smsReceiver != null) {
unregisterReceiver(smsReceiver);
smsReceiver = null;
}
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if (downloadEventReceiver != null) {
unregisterReceiver(downloadEventReceiver);
downloadEventReceiver = null;
}
if (stopServiceReceiver != null) {
unregisterReceiver(stopServiceReceiver);
stopServiceReceiver = null;
}
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
notificationManager.cancel(BackgroundMediaModule.NOTIFICATION_ID);
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notificationManager.cancel(DownloadManager.DOWNLOAD_NOTIFICATION_GROUP_ID);
if (downloadNotificationIds != null) {
for (int i = 0; i < downloadNotificationIds.size(); i++) {
notificationManager.cancel(downloadNotificationIds.get(i));
}
}
if (receivedStopService || !isServiceRunning(LbrynetService.class)) {
notificationManager.cancelAll();
}
super.onDestroy();
if (mReactInstanceManager != null) {
mReactInstanceManager.onHostDestroy(this);
}
}
@Override
public void onBackPressed() {
if (mReactInstanceManager != null) {
mReactInstanceManager.onBackPressed();
} else {
super.onBackPressed();
}
}
@TargetApi(Build.VERSION_CODES.M)
public void requestPermissions(String[] permissions, int requestCode, PermissionListener listener) {
permissionListener = listener;
ActivityCompat.requestPermissions(this, permissions, requestCode);
}
@Override
public void onNewIntent(Intent intent) {
if (mReactInstanceManager != null) {
mReactInstanceManager.onNewIntent(intent);
}
if (intent != null) {
int sourceNotificationId = intent.getIntExtra(SOURCE_NOTIFICATION_ID_KEY, -1);
if (sourceNotificationId > -1) {
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
notificationManager.cancel(sourceNotificationId);
}
}
super.onNewIntent(intent);
}
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private static void checkPermission(String permission, int requestCode, String rationale, Context context, boolean forceRequest) {
if (ContextCompat.checkSelfPermission(context, permission) != PackageManager.PERMISSION_GRANTED) {
// Should we show an explanation?
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if (!forceRequest && ActivityCompat.shouldShowRequestPermissionRationale((Activity) context, permission)) {
Toast.makeText(context, rationale, Toast.LENGTH_LONG).show();
} else {
ActivityCompat.requestPermissions((Activity) context, new String[] { permission }, requestCode);
}
}
}
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private static void checkPermission(String permission, int requestCode, String rationale, Context context) {
checkPermission(permission, requestCode, rationale, context, false);
}
public static boolean hasPermission(String permission, Context context) {
return (ContextCompat.checkSelfPermission(context, permission) == PackageManager.PERMISSION_GRANTED);
}
public static void checkPhoneStatePermission(Context context) {
// Request read phone state permission
checkPermission(Manifest.permission.READ_PHONE_STATE,
PHONE_STATE_PERMISSION_REQ_CODE,
"LBRY requires optional access to be able to identify your device for rewards. " +
"You cannot claim rewards without this permission.",
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context,
true);
}
public static void checkReceiveSmsPermission(Context context) {
// Request read phone state permission
checkPermission(Manifest.permission.RECEIVE_SMS,
RECEIVE_SMS_PERMISSION_REQ_CODE,
"LBRY requires access to be able to read a verification text message for rewards.",
context,
true);
}
private boolean isServiceRunning(Class<?> serviceClass) {
ActivityManager manager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
for (ActivityManager.RunningServiceInfo serviceInfo : manager.getRunningServices(Integer.MAX_VALUE)) {
if (serviceClass.getName().equals(serviceInfo.service.getClassName())) {
return true;
}
}
return false;
}
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private static WritableMap JSONObjectToMap(JSONObject jsonObject) throws JSONException {
WritableMap map = Arguments.createMap();
Iterator<String> keys = jsonObject.keys();
while(keys.hasNext()) {
String key = keys.next();
Object value = jsonObject.get(key);
if (value instanceof JSONArray) {
map.putArray(key, JSONArrayToList((JSONArray) value));
} else if (value instanceof JSONObject) {
map.putMap(key, JSONObjectToMap((JSONObject) value));
} else if (value instanceof Boolean) {
map.putBoolean(key, (Boolean) value);
} else if (value instanceof Integer) {
map.putInt(key, (Integer) value);
} else if (value instanceof Double) {
map.putDouble(key, (Double) value);
} else if (value instanceof String) {
map.putString(key, (String) value);
} else {
map.putString(key, value.toString());
}
}
return map;
}
private static WritableArray JSONArrayToList(JSONArray jsonArray) throws JSONException {
WritableArray array = Arguments.createArray();
for(int i = 0; i < jsonArray.length(); i++) {
Object value = jsonArray.get(i);
if (value instanceof JSONArray) {
array.pushArray(JSONArrayToList((JSONArray) value));
} else if (value instanceof JSONObject) {
array.pushMap(JSONObjectToMap((JSONObject) value));
} else if (value instanceof Boolean) {
array.pushBoolean((Boolean) value);
} else if (value instanceof Integer) {
array.pushInt((Integer) value);
} else if (value instanceof Double) {
array.pushDouble((Double) value);
} else if (value instanceof String) {
array.pushString((String) value);
} else {
array.pushString(value.toString());
}
}
return array;
}
/**
* https://gist.github.com/HBiSoft/15899990b8cd0723c3a894c1636550a8
*/
@SuppressLint("NewApi")
public static String getRealPathFromURI_API19(final Context context, final Uri uri) {
final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
// DocumentProvider
if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
// ExternalStorageProvider
if (isExternalStorageDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
// This is for checking Main Memory
if ("primary".equalsIgnoreCase(type)) {
if (split.length > 1) {
return Environment.getExternalStorageDirectory() + "/" + split[1];
} else {
return Environment.getExternalStorageDirectory() + "/";
}
// This is for checking SD Card
} else {
return "storage" + "/" + docId.replace(":", "/");
}
}
// DownloadsProvider
else if (isDownloadsDocument(uri)) {
String fileName = getFilePath(context, uri);
if (fileName != null) {
return Environment.getExternalStorageDirectory().toString() + "/Download/" + fileName;
}
String id = DocumentsContract.getDocumentId(uri);
if (id.startsWith("raw:")) {
id = id.replaceFirst("raw:", "");
File file = new File(id);
if (file.exists())
return id;
}
final Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
return getDataColumn(context, contentUri, null, null);
}
// MediaProvider
else if (isMediaDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
Uri contentUri = null;
if ("image".equals(type)) {
contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
} else if ("video".equals(type)) {
contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
} else if ("audio".equals(type)) {
contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
}
final String selection = "_id=?";
final String[] selectionArgs = new String[]{
split[1]
};
return getDataColumn(context, contentUri, selection, selectionArgs);
}
}
// MediaStore (and general)
else if ("content".equalsIgnoreCase(uri.getScheme())) {
// Return the remote address
if (isGooglePhotosUri(uri))
return uri.getLastPathSegment();
return getDataColumn(context, uri, null, null);
}
// File
else if ("file".equalsIgnoreCase(uri.getScheme())) {
return uri.getPath();
}
return null;
}
public static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {
Cursor cursor = null;
final String column = "_data";
final String[] projection = {
column
};
try {
cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
if (cursor != null && cursor.moveToFirst()) {
final int index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(index);
}
} finally {
if (cursor != null)
cursor.close();
}
return null;
}
public static String getFilePath(Context context, Uri uri) {
Cursor cursor = null;
final String[] projection = { MediaStore.MediaColumns.DISPLAY_NAME };
try {
cursor = context.getContentResolver().query(uri, projection, null, null, null);
if (cursor != null && cursor.moveToFirst()) {
final int index = cursor.getColumnIndexOrThrow(MediaStore.MediaColumns.DISPLAY_NAME);
return cursor.getString(index);
}
} finally {
if (cursor != null)
cursor.close();
}
return null;
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is ExternalStorageProvider.
*/
public static boolean isExternalStorageDocument(Uri uri) {
return "com.android.externalstorage.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is DownloadsProvider.
*/
public static boolean isDownloadsDocument(Uri uri) {
return "com.android.providers.downloads.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is MediaProvider.
*/
public static boolean isMediaDocument(Uri uri) {
return "com.android.providers.media.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is Google Photos.
*/
public static boolean isGooglePhotosUri(Uri uri) {
return "com.google.android.apps.photos.content".equals(uri.getAuthority());
}
}