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v1.3, added support for MultiWindow and text drag-and-drop on Samsung's devices
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‎Changes.md‎

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v1.3
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* Support for MultiWindow and drag-and-drop on Samsung's devices:
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drag a "file path text" label from your favorite file explorer app,
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using the "drag-n-drop" Samsung's MultiWindow button located in the middle multiwindow menu.
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Only *text labels* from other apps are supported (not objects).
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v1.2
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* Added support for multiple file selection.
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v1.1
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* Based on triops v7.3
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v1.0 (initial release):
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* Based on triops v7.2.1

‎README.md‎

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triops.apk:
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a simple Android tool for encryption/decryption of files.
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Last version available and compiled is v1.2. Check [list of changes between versions](Changes.md).
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Last version available and compiled is v1.3. Check [list of changes between versions](Changes.md).
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apk available here:
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apk available [https://github.com/circulosmeos/triops.apk/releases/download/v1.3/triops.apk](here):
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[http://wp.me/p2FmmK-8T](http://wp.me/p2FmmK-8T)
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![](https://circulosmeos.files.wordpress.com/2015/09/triops-apk1.png)
@@ -25,6 +25,7 @@ Features:
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* Files bigger than 2 GiB can be managed.
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* Speed is extremely high: the app uses a native OS library and CHACHA20 is a very fast encryption algorithm: it is as fast as RC4.
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* Code for the Android file browser is a slightly modified version of ingyesid‘s [simple-file-chooser](https://github.com/ingyesid/simple-file-chooser).
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* Support for MultiWindow and drag-and-drop on Samsung's devices (file path text, via drag-n-drop Samsung's MultiWindow button).
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* Licensed as [GPL v3](http://www.gnu.org/licenses/gpl-3.0.html)
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Known limitations:

‎app/build.gradle‎

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@@ -8,7 +8,7 @@ android {
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applicationId "com.example.triops"
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minSdkVersion 7
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targetSdkVersion 22
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versionName '1.2'
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versionName '1.3'
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ndk {
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moduleName "com.example.triops"
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}
@@ -47,4 +47,6 @@ android {
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dependencies {
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compile 'com.android.support:support-v4:21.0.3'
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compile 'com.android.support:appcompat-v7:21.0.3'
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compile project(':multiwindow-v1.2.6')
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compile project(':sdk-v1.0.0')
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}

‎app/src/main/AndroidManifest.xml‎

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<uses-sdk
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android:minSdkVersion="7"
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android:targetSdkVersion="17" />
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<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
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<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
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<uses-permission android:name="com.samsung.android.providers.context.permission.WRITE_USE_APP_FEATURE_SURVEY"/>
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<application
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android:allowBackup="true"
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android:theme="@style/AppTheme"
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android:supportsRtl="true">
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<meta-data android:name="com.samsung.android.sdk.multiwindow.enable"
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android:value="true" />
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<meta-data android:name="com.sec.android.support.multiwindow" android:value="true"/>
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<activity
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android:name=".MainActivity"
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android:label="@string/app_name"
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<action android:name="android.intent.action.MAIN" />
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<category android:name="android.intent.category.LAUNCHER" />
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<category android:name="android.intent.category.MULTIWINDOW_LAUNCHER" />
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</intent-filter>
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</activity>
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‎app/src/main/java/com/example/triops/MainActivity.java‎

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package com.example.triops;
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import android.content.ClipData;
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import android.content.ClipDescription;
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import android.content.Intent;
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import android.graphics.Color;
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import android.graphics.PorterDuff;
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import android.graphics.Rect;
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import android.graphics.drawable.ColorDrawable;
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import android.os.Bundle;
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import android.os.Handler;
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import android.support.v4.app.FragmentActivity;
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import android.support.v7.app.ActionBarActivity;
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import android.content.Intent;
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import android.os.Bundle;
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import android.text.InputType;
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import android.text.method.LinkMovementMethod;
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import android.util.Log;
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import android.view.DragEvent;
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import android.view.Menu;
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import android.view.MenuItem;
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import android.view.View;
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import android.view.WindowManager;
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import android.widget.Button;
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import android.widget.CheckBox;
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import android.widget.EditText;
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import android.widget.ImageView;
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import android.widget.ScrollView;
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import android.widget.TextView;
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import android.widget.EditText;
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import android.widget.Toast;
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import android.text.InputType;
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import com.orleonsoft.android.simplefilechooser.Constants;
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import com.orleonsoft.android.simplefilechooser.FileInfo;
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import com.orleonsoft.android.simplefilechooser.ui.FileChooserActivity;
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import com.samsung.android.sdk.multiwindow.SMultiWindow;
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import com.samsung.android.sdk.multiwindow.SMultiWindowActivity;
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import java.util.ArrayList;
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import java.util.regex.Matcher;
@@ -55,6 +65,9 @@ private enum FILE_OPERATION { OPERATION_CRYPT, OPERATION_DECRYPT }
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private ArrayList<String> strExternalFile = null;
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private String MULTIPLE_FILES_SELECTED = "Multiple files selected";
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private String strExternalPasswordFile;
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private boolean bMultiwindow=false;
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private SMultiWindow mMultiWindow = null;
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private SMultiWindowActivity mMultiWindowActivity = null;
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/* this is used to load the 'name' library on application
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* startup. The library has already been unpacked into
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//public native int triops(int argc, String[] argv);
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public native int triops(String[] argv);
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final FragmentActivity activityForButton = this;
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
@@ -90,8 +101,233 @@ protected void onCreate(Bundle savedInstanceState) {
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// show links in tvwLog
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tvwLog.setMovementMethod(LinkMovementMethod.getInstance());
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// this will last just until next tvwLog modification ! Enough.
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// ***************************************************************
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// Samsung's Multiwindow support
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SMultiWindow mMultiWindow = new SMultiWindow();
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if (mMultiWindow.getVersionCode() > 0) {
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// This device support MultiWindow Feature.
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if (mMultiWindow.isFeatureEnabled(SMultiWindow.MULTIWINDOW)) {
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// This device support MultiWindow.
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bMultiwindow=true;
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Toast.makeText(MainActivity.this,
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"There is MultiWindow support!",
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Toast.LENGTH_LONG).show();
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mMultiWindowActivity = new SMultiWindowActivity(this);
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boolean success = mMultiWindowActivity
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.setStateChangeListener(new SMultiWindowActivity.StateChangeListener() {
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@Override
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public void onModeChanged(boolean arg0) {
124+
// TODO Auto-generated method stub
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/*if (arg0) {
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Toast.makeText(MainActivity.this,
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"MultiWindow Mode is changed to Multi-Window",
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Toast.LENGTH_LONG).show();
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} else {
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Toast.makeText(MainActivity.this,
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"MultiWindow Mode is changed to Normal-Window",
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Toast.LENGTH_LONG).show();
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}*/
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}
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@Override
137+
public void onZoneChanged(int arg0) {
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// TODO Auto-generated method stub
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String zoneInfo = "Free zone";
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if (arg0 == SMultiWindowActivity.ZONE_A) {
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zoneInfo = "Zone A";
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} else if (arg0 == SMultiWindowActivity.ZONE_B) {
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zoneInfo = "Zone B";
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}
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/*Toast.makeText(MainActivity.this,
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"Activity zone info is changed to " + zoneInfo,
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Toast.LENGTH_LONG).show();*/
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}
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@Override
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public void onSizeChanged(Rect arg0) {
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// TODO Auto-generated method stub
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/*Toast.makeText(MainActivity.this,
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"Activity size info is changed to " + arg0,
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Toast.LENGTH_LONG).show();*/
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}
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});
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} // if (mMultiWindow.isFeatureEnabled(SMultiWindow.MULTIWINDOW))
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} // if (mMultiWindow.getVersionCode() > 0)
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// ***************************************************************
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// Creates a new drag event listener
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myDragEventListener mDragListen = new myDragEventListener();
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// Sets the drag event listener for the View
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findViewById(R.id.btnChooseFile).setOnDragListener(mDragListen);
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findViewById(R.id.btnChoosePasswordFile).setOnDragListener(mDragListen);
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}
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protected class myDragEventListener implements View.OnDragListener {
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int iPreviousColor = 0;
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// This is the method that the system calls when it dispatches a drag event to the
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// listener.
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public boolean onDrag(View v, DragEvent event) {
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CharSequence dragData;
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final int colorBLUE = Color.rgb( 96, 149, 237);
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final int colorGREEN = Color.rgb( 98, 205, 101);
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// Defines a variable to store the action type for the incoming event
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final int action = event.getAction();
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// Handles each of the expected events
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switch(action) {
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case DragEvent.ACTION_DRAG_STARTED:
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// Determines if this View can accept the dragged data
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if ( event.getClipDescription().hasMimeType(ClipDescription.MIMETYPE_TEXT_PLAIN) ) {
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// As an example of what your application might do,
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// applies a blue color tint to the View to indicate that it can accept
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// data.
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try {
202+
iPreviousColor = ((ColorDrawable) (v.getBackground())).getColor();
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} catch (Exception e) {
204+
iPreviousColor = Color.LTGRAY;
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}
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v.setBackgroundColor( colorBLUE );
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// Invalidate the view to force a redraw in the new tint
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v.invalidate();
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// returns true to indicate that the View can accept the dragged data.
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return true;
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}
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// Returns false. During the current drag and drop operation, this View will
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// not receive events again until ACTION_DRAG_ENDED is sent.
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return false;
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case DragEvent.ACTION_DRAG_ENTERED:
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// Applies a green tint to the View. Return true; the return value is ignored.
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v.setBackgroundColor(colorGREEN);
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// Invalidate the view to force a redraw in the new tint
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v.invalidate();
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return true;
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case DragEvent.ACTION_DRAG_LOCATION:
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// Ignore the event
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return true;
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case DragEvent.ACTION_DRAG_EXITED:
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// Re-sets the color tint to blue. Returns true; the return value is ignored.
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v.setBackgroundColor(colorBLUE);
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// Invalidate the view to force a redraw in the new tint
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v.invalidate();
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return true;
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case DragEvent.ACTION_DROP:
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// Gets the item containing the dragged data
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ClipData.Item item = event.getClipData().getItemAt(0);
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// Gets the text data from the item.
252+
dragData = item.getText();
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// Displays a message containing the dragged data.
255+
/*Toast.makeText(MainActivity.this,
256+
"Dragged data is " + dragData.toString(), Toast.LENGTH_LONG).show();*/
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/*Toast.makeText(MainActivity.this,
258+
String.valueOf( event.getClipData().getItemCount() ), Toast.LENGTH_LONG).show();*/
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// Turns off any color tints
261+
v.setBackgroundColor(iPreviousColor);
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// Invalidates the view to force a redraw
264+
v.invalidate();
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// action to perform:
267+
if ( dragData != null &&
268+
dragData.toString().matches("^/.+[^/]$") ) {
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// check that there're no multiple lines in dragged text!
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// TODO: accept drag-n-drop texts with multiple file paths
272+
Pattern regex = Pattern.compile("^.+\\n.+", Pattern.DOTALL);
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Matcher regexMatcher = regex.matcher(dragData.toString());
274+
if (regexMatcher.find()) {
275+
Toast.makeText(MainActivity.this, "text dropped is not a valid file path!",
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Toast.LENGTH_LONG).show();
277+
} else {
278+
279+
Intent data = new Intent(MainActivity.this, MainActivity.class);
280+
ArrayList<String> list_of_selected_files = new ArrayList<String>();
281+
list_of_selected_files.add(dragData.toString());
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data.putStringArrayListExtra(Constants.KEY_FILE_SELECTED,
283+
list_of_selected_files);
284+
onActivityResult(
285+
(v.getId() == R.id.btnChooseFile) ?
286+
REQUEST_CODE_GET_FILE_TO_OVERWRITE :
287+
REQUEST_CODE_GET_PASSWORD_FILE,
288+
RESULT_OK, data);
289+
}
290+
291+
} else {
292+
Toast.makeText(MainActivity.this, "text dropped is not a valid file path",
293+
Toast.LENGTH_LONG).show();
294+
}
295+
296+
297+
// Returns true. DragEvent.getResult() will return true.
298+
return true;
299+
300+
case DragEvent.ACTION_DRAG_ENDED:
301+
302+
// Turns off any color tinting
303+
v.setBackgroundColor(iPreviousColor);
304+
305+
// Invalidates the view to force a redraw
306+
v.invalidate();
307+
308+
// Does a getResult(), and displays what happened.
309+
if (event.getResult()) {
310+
//Toast.makeText(MainActivity.this, "The drop was handled.", Toast.LENGTH_LONG).show();
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312+
} else {
313+
Toast.makeText(MainActivity.this, "The drop didn't work.", Toast.LENGTH_LONG).show();
314+
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}
316+
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// returns true; the value is ignored.
318+
return true;
319+
320+
// An unknown action type was received.
321+
default:
322+
Log.e("DragDrop Example", "Unknown action type received by OnDragListener.");
323+
break;
324+
}
325+
326+
return false;
327+
}
328+
};
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95331
@Override
96332
public boolean onCreateOptionsMenu(Menu menu) {
97333
getMenuInflater().inflate(R.menu.main, menu);

‎app/src/main/res/values/strings.xml‎

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<string name="filebrowser_name">File Browser</string>
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<string name="password">Password:</string>
1515
<string name="password_hint">password...</string>
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<string name="initiallogtext">triops (v7.3) port to Android, version 1.2 (2015&#8211;10)\n <a href ="https://wp.me/p2FmmK-8T">circulosmeos.wordpress.com</a>\n <a href="https://github.com/circulosmeos/triops.apk">github.com/circulosmeos/triops.apk</a>\nlicensed under GNU General Public License <a href="http://www.gnu.org/licenses/gpl-3.0.en.html">(GPL) v3</a>.\n\nEncrypt and decrypt files \n with <a href="https://en.wikipedia.org/wiki/Salsa20#ChaCha20_adoption">CHACHA20</a>+<a href="https://en.wikipedia.org/wiki/SHA-3#History">KECCAK</a>.\nOperation will be automagically inferred from file extension.\n\n</string>
16+
<string name="initiallogtext">triops (v7.3) port to Android, version 1.3 (2015&#8211;12)\n <a href ="https://wp.me/p2FmmK-8T">circulosmeos.wordpress.com</a>\n <a href="https://github.com/circulosmeos/triops.apk">github.com/circulosmeos/triops.apk</a>\nlicensed under GNU General Public License <a href="http://www.gnu.org/licenses/gpl-3.0.en.html">(GPL) v3</a>.\n\nEncrypt and decrypt files \n with <a href="https://en.wikipedia.org/wiki/Salsa20#ChaCha20_adoption">CHACHA20</a>+<a href="https://en.wikipedia.org/wiki/SHA-3#History">KECCAK</a>.\nOperation will be automagically inferred from file extension.\n\n</string>
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<string name="fileSize">File Size</string>
1919
<string name="currentDir">Current Dir</string>

‎multiwindow-v1.2.6/build.gradle‎

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configurations.create("default")
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artifacts.add("default", file('multiwindow-v1.2.6.jar'))

‎multiwindow-v1.2.6/multiwindow-v1.2.6.jar‎

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‎sdk-v1.0.0/build.gradle‎

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configurations.create("default")
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artifacts.add("default", file('sdk-v1.0.0.jar'))

‎sdk-v1.0.0/sdk-v1.0.0.jar‎

1.96 KB
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