I am trying to make a simple application in Java to install an APK on Android devices connected via USB. Using ABD manually or installing from Android Studio it works fine, but I wanted to give a simple single button click install option within my application, I have tried following code but unfortunately, it is not working
abdsourcesync = apkpath;
progress.setString("sync in progress");
System.out.println("Starting Sync via adb with command " + "adb"
+ " install -r " + apkpath);
Process process = Runtime.getRuntime().exec(
"adb" + " install -r " + apkpath);
InputStreamReader reader = new InputStreamReader(
process.getInputStream());
Scanner scanner = new Scanner(reader);
scanner.close();
int exitCode = process.waitFor();
System.out.println("Process returned: " + exitCode);
I have searched around here but I have only found installing an APK from within an Android application or from the android studio, not from a core Java. or java web module
Your helping hand would be really appreciated ;
Do not forget about runtime permissions
This simple example works for me for API 28.
It opens an apk file to install from "Download folder"
For simplification:
Download the apk file for application you want to install to "Download" folder of your phone. (There are a lot of instructions to do it programmaticaly, ot you can do it manualy)
TO DO
Create new project
Add a button to MainActivity
Create xml folder in res folder and create a file_paths.xml file there
Use the code bellow
Enjoy =)
Manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.teko.testcleanopenfile">
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES"/>
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme"
tools:ignore="GoogleAppIndexingWarning">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<provider
android:name="androidx.core.content.FileProvider"
android:authorities="${applicationId}"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="#xml/file_paths" />
</provider>
</application>
</manifest>
MainActivity
public class MainActivity extends AppCompatActivity {
TextView textView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// textView and button
textView = findViewById(R.id.textView);textView.setText("Hello updatable World\n");
(findViewById(R.id.button)).setOnClickListener(new View.OnClickListener() {
#RequiresApi(api = Build.VERSION_CODES.M)
#Override
public void onClick(View view) {RunAPK(getBaseContext());}
});
}
private void RunAPK(Context context){
requestPermissionsToRead();
}
private void requestPermissionsToRead() {
// ASK RUNTIME PERMISSIONS
ActivityCompat.requestPermissions(MainActivity.this, new String[]{READ_EXTERNAL_STORAGE},111);
}
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
if (grantResults.length > 0) {
if (requestCode == 111 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
textView.append("Permission granted write\n");
// Create Uri
File downloads = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
File file1 = new File (downloads + "//app-debug.apk");//downloads.listFiles()[0];
Uri contentUri1 = getUriForFile(this, BuildConfig.APPLICATION_ID, file1);
// Intent to open apk
Intent intent = new Intent(Intent.ACTION_VIEW, contentUri1);
intent.setDataAndType(contentUri1, "application/vnd.android.package-archive");
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
startActivity(intent);
}
}
}
}
file_paths.xml
<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<external-path name="download" path="."/>
</paths>
You can Install Application from Java code using below way.
File outputFile = null;
try {
outputFile = new File(<APK Path>);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
Uri apkUri = FileProvider.getUriForFile(mContext, BuildConfig.APPLICATION_ID + ".provider", outputFile);
Intent intent = new Intent(Intent.ACTION_INSTALL_PACKAGE);
intent.setData(apkUri);
intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
mContext.startActivity(intent);
} else if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N){
Uri apkUri = Uri.fromFile(outputFile);
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(apkUri, "application/vnd.android.package-archive");
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
mContext.startActivity(intent);
}else {
Toast.makeText(mContext, "File not found.", Toast.LENGTH_LONG).show();
}
} catch (Exception e) {
e.printStackTrace();
}
Related
I am sending images to firebase. but when my upload pictures method starts running, I get no auth token printed into my logcat couple of times. I tried using both camera and gallery, but they both make the same output even though my firebase storage rules are:
rules_version = '2';
service firebase.storage {
match /b/{bucket}/o {
match /{allPaths=**} {
allow read, write;
}
}
}
And my code is:
if (fragment3.isAdded()) {
EditText plantdetails = (EditText) fragment3.getView().findViewById(R.id.plantdetails);
if (plantdetails.getText().toString().equals("")) {
Toast.makeText(newPlant.this, "I think you forgot something.", Toast.LENGTH_LONG).show();
} else {
plants plantss = new plants();
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(newPlant.this);
prefs.edit().putString("pldetails", plantdetails.getText().toString()).apply();
String pname = prefs.getString("plname","null");
String pdate = prefs.getString("pldate","null");
String petails = prefs.getString("pldetails","null");
plantss.setPlname(pname);
plantss.setPldate(pdate);
plantss.setPldetails(petails);
reference.child("Plants").child(pname).setValue(plantss);
try {
Fileuploader();
}catch (FileNotFoundException e){
e.printStackTrace();
}
}
}
if (fragment4.isAdded()){
}
}
});
}
private void Fileuploader() throws FileNotFoundException {
String imageid;
progress.showProgress(newPlant.this,"Loading...",false);
DatabaseHelper databaseHelper = new DatabaseHelper(newPlant.this);
Cursor getimage = databaseHelper.GetPath();
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(newPlant.this);
String plname = prefs.getString("plname","null");
int count = 0;
int count2 = 0;
if (getimage !=null){
while (getimage.moveToNext()) {
System.out.println("IMAGE IS THIS MY MAN: "+ getimage.getString(0));
Bitmap bm = BitmapFactory.decodeFile(getimage.getString(0));
if (bm == null){
return;
}else {
ByteArrayOutputStream out = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.JPEG, 35, out);
imageid = System.currentTimeMillis() + "_" + (count++) + "." + getExtension(uri);
DatabaseReference reference = FirebaseDatabase.getInstance().getReference().child("Plants").child(plname).child("PlantImages");
String imagekey = reference.push().getKey();
reference.child(imagekey).child("ImageID").setValue(imageid);
reference.child(imagekey).child("ID").setValue(count2++);
System.out.println("IMAGES UPLOADEDDDD: " + imageid);
byte[] data = out.toByteArray();
StorageReference Ref = mStorageRef.child(imageid);
Ref.putBytes(data)
.addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
#Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
// Get a URL to the uploaded content
//Uri downloadUrl = taskSnapshot.getDownloadUrl();
//Toast.makeText(profuctadd.this,"Image uploaded",Toast.LENGTH_LONG).show();
progress.hideProgress();
Intent intent = new Intent(newPlant.this, Donenewplant.class);
startActivity(intent);
finish();
DatabaseHelper mDatabaseHelper = new DatabaseHelper(newPlant.this);
Cursor cursor2 = mDatabaseHelper.DeleteDataOfTableImagesAr();
cursor2.moveToNext();
}
})
.addOnFailureListener(new OnFailureListener() {
#Override
public void onFailure(#NonNull Exception exception) {
// Handle unsuccessful uploads
// ...
Toast.makeText(newPlant.this, "Failed", Toast.LENGTH_LONG).show();
System.out.println("FAILED:::: "+exception);
}
});
}
}
}
}
Mainfest file:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.varroxsystems.plant">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<application
android:allowBackup="true"
android:icon="#drawable/plant"
android:label="#string/app_name"
android:roundIcon="#drawable/plant"
android:supportsRtl="true"
android:requestLegacyExternalStorage="true"
android:theme="#style/AppTheme">
<activity android:name=".Donenewplant"></activity>
<activity android:name=".newPlant" />
<activity android:name=".MainActivity" />
<activity android:name=".Splash_screen">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<provider
android:name="androidx.core.content.FileProvider"
android:authorities="com.varroxsystems.plant.fileprovider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="#xml/file_paths" />
</provider>
</application>
</manifest>
So does anyone know a solution for that, or is it just a bug, because I use the same exact code in another app and it works just fine.
EDIT: The other app I use uses a different database, not the same one.
I am building a voice recognition app that does something when I say a specific word such as "open" and it opens something etc. but the problem is that my app keep crashing when I run it on my phone (real device) and I tap the speak button. I don't know what else to do? I tried giving it internet and voice recognition permission but it still doesn't help
here is the code in java (android studio)
public class MainActivity extends Activity {
private static final int VOICE_RECOGNITION_REQUEST_CODE = 1234;
private TextView resultText;
#Override
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button speakButton = (Button) findViewById(R.id.SpeakButton);
speakButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view)
{
startVoiceRecognitionActivity();
}
});
}
void startVoiceRecognitionActivity(){
Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
intent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE, getClass().getPackage().getName());
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
intent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, 5);
startActivityForResult(intent, VOICE_RECOGNITION_REQUEST_CODE);
}
#Override
protected void onActivityResult (int requestCode,int resultCode, Intent data){
String wordStr = null;
String[] words = null;
String firstWord = null;
String secondWord = null;
if (requestCode == VOICE_RECOGNITION_REQUEST_CODE && resultCode == RESULT_OK)
{
ArrayList<String> matches = data
.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
wordStr = matches.get(0);
words = wordStr.split(" ");
firstWord = words[0];
secondWord = words[1];
}
if (firstWord.equals("open"))
{
resultText = (TextView)findViewById(R.id.ResultText);
resultText.setText("Results: Open Command Works");
}
}
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.starlinginteractivesoftworks.musiccompanion">
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.INTERNET" />
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
I look at the log and it said:
08-07 20:12:57.813 14350-14350/? E/BoostFramework: BoostFramework() :
Exception_1 = java.lang.ClassNotFoundException: Didn't find class
"com.qualcomm.qti.Performance" on path:
DexPathList[[],nativeLibraryDirectories=[/system/lib64,
/vendor/lib64]] 08-07 20:12:58.509
14350-14350/com.starlinginteractivesoftworks.musiccompanion
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.starlinginteractivesoftworks.musiccompanion, PID: 14350
android.content.ActivityNotFoundException: No Activity found to handle
Intent { act=android.speech.action.RECOGNIZE_SPEECH
launchParam=MultiScreenLaunchParams { mDisplayId=0 mFlags=0 } (has
extras) }
at
android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1839)
at
android.app.Instrumentation.execStartActivity(Instrumentation.java:1531)
at android.app.Activity.startActivityForResult(Activity.java:4399)
at android.app.Activity.startActivityForResult(Activity.java:4358)
at
com.starlinginteractivesoftworks.musiccompanion.MainActivity.startVoiceRecognitionActivity(MainActivity.java:55)
at
com.starlinginteractivesoftworks.musiccompanion.MainActivity$1.onClick(MainActivity.java:43)
at android.view.View.performClick(View.java:6205)
at android.widget.TextView.performClick(TextView.java:11103)
at android.view.View$PerformClick.run(View.java:23653)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6682)
at java.lang.reflect.Method.invoke(Native Method)
at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1520)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1410)
The boost framework log is just a warning, no worry about it. The real problem is the
ActivityNotFoundException: No Activity found to handle Intent
It can come from:
a poor connectivity
the voice app is missing on your phone
Possible solutions
Ensure you have a recognition app installed (see ActivityNotFoundException: No Activity found to handle Intent (RECOGNIZE_SPEECH) for more details).
Try to enable offline mode as explained here:
On your device go to Settings -> Language and Input. Click on icon on Google voice input.
Under ALL tab select the language you want to download.
Once the language package downloaded, you can see it under INSTALLED tab.
Workarounds
Catch the exception and open a webview to download a recognition app:
try{
...
}
catch(ActivityNotFoundException e) {
Intent i = new Intent(Intent.ACTION_VIEW,
Uri.parse("https://market.android.com/details?id=APP_PACKAGE_NAME"));
startActivity(i);
}
Check that a recognition app is available before the startActivity (see https://stackoverflow.com/a/35290037/2667536):
PackageManager manager = context.getPackageManager();
List<ResolveInfo> infos = manager.queryIntentActivities(intent, 0);
if (infos.size() > 0) {
//Then there is application can handle your intent
}else{
//No Application can handle your intent
}
I've been searching the internet for several hours now in an attempt to find a file writing function that actually works for me. So far I have this in my MainActivity.java:
public void writeToFile(String data, Context ctx) {
File path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS);
File tempFile = new File(path, "houseDataFile.txt");
if(!tempFile.exists()){
tempFile.mkdirs();
}
try
{
FileOutputStream fOut = new FileOutputStream(tempFile);
fOut.write(data.getBytes());
fOut.close();
Toast.makeText(ctx, "Saved", Toast.LENGTH_SHORT).show();
}catch (Exception e)
{
Log.w(TAG, "FileOutputStream exception: - " + e.toString());
}
}
My android manifest contains both permissions:
<?xml version="1.0" encoding="utf-8"?>
<manifest package="my.package.application"xmlns:android="http://schemas.android.com/apk/res/android">
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_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">
</activity>
<activity android:name=".Menu_activity">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
</application>
Though rather frustratingly when I run the app and call writeToFile() it gives me an error saying:
W/MainActivity: FileOutputStream exception: - java.io.FileNotFoundException: /storage/emulated/0/Documents/houseDataFile.txt: open failed: ENOENT (No such file or directory)
Any help would be greatly appreciated, thank you in advance.
I'm assuming that you are failing to get the file path because you don't asking runtime-permission while executing method. Here you can take a look at the below code.
First, check if your device's OS version is above Lollipop or not. If above then show permission pop-up dialog.
final int MyVersion = Build.VERSION.SDK_INT;
if (MyVersion > Build.VERSION_CODES.LOLLIPOP_MR1)
{
if (!checkIfAlreadyhavePermission())
{
ActivityCompat.requestPermissions(ProfileActivity.this, new String[] {android.Manifest.permission.READ_EXTERNAL_STORAGE}, 1);
}
else
{
writeToFile(data, ctx);
}
}
else
{
writeToFile(data, ctx)
}
private boolean checkIfAlreadyhavePermission() {
int result = ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE);
return result == PackageManager.PERMISSION_GRANTED;
}
Then define "Allow" and "Deny" button functionalities in OnRequestPerMissionResult().
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
switch (requestCode) {
case 1: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
writeToFile( data, ctx);
} else {
Toast.makeText(YourActivity.this, "Please provide permission", Toast.LENGTH_LONG).show();
}
break;
}
}
Please let me know if this solves the issue.
I'm trying to create a system overlay. But I keep getting "permission denied". I'm using SDK version 23.
My manifest file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.test" >
<uses-permission android:name="android.permission.SYSTEM_OVERLAY_WINDOW" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".activity.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
The code I use to create the overlay:
//mView = new HUDView(this);
mButton = new Button(this);
mButton.setText("Overlay button");
mButton.setOnTouchListener(this);
WindowManager.LayoutParams params = new WindowManager.LayoutParams(
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.TYPE_SYSTEM_ALERT,
WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH,
PixelFormat.TRANSLUCENT);
params.gravity = Gravity.RIGHT | Gravity.TOP;
params.setTitle("Load Average");
WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE);
wm.addView(mButton, params);
First, there is no permission named SYSTEM_OVERLAY_WINDOW. It is SYSTEM_ALERT_WINDOW.
Second, if your targetSdkVersion is 23 or higher, and you are running on Android 6.0+ devices, your app will not get this permission at the outset. Call Settings.canDrawOverlays() to see if you have the permission, and use ACTION_MANAGE_OVERLAY_PERMISSION to lead the user over to Settings if you do not.
In AndroidManifest (for version < 23)
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>
public static int ACTION_MANAGE_OVERLAY_PERMISSION_REQUEST_CODE= 5469;
//Random value
public void testPermission() {
if (!Settings.canDrawOverlays(this)) {
Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
Uri.parse("package:" + getPackageName()));
startActivityForResult(intent, ACTION_MANAGE_OVERLAY_PERMISSION_REQUEST_CODE);
}
}
Result :
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == ACTION_MANAGE_OVERLAY_PERMISSION_REQUEST_CODE) {
if (Settings.canDrawOverlays(this)) {
// You have permission
}
}
}
You can also lead the user over to the specific app's overlaying page. The documentation states:
Input: Optionally, the Intent's data URI can specify the application package name to directly invoke the management GUI specific to the package name. For example "package:com.my.app".
So something like:
intent.setData(Uri.fromParts("package", getPackageName(), null));
As an alternative solution, you can try WindowManager.LayoutParams.TYPE_TOAST instead of WindowManager.LayoutParams.TYPE_SYSTEM_ALERT.
This not requires any permission.
I'm using it to show image, maybe button will work to
for users below and above android 8 use
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
LAYOUT_FLAG = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;
} else {
LAYOUT_FLAG = WindowManager.LayoutParams.TYPE_PHONE;
}
I handled all of the overlay permissions for every android version in my library. Please see the gist here.
For Display over the other apps permissions is required to add in the manifest is
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
To check your app has permission
Settings.canDrawOverlays(context)
To check permission checkOverlayPermission
private const val CODE_DRAW_OVER_OTHER_APP_PERMISSION = 2084
private fun checkOverlayPermission(){
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && !Settings.canDrawOverlays(this)) {
//If the draw over permission is not available open the settings screen
//to grant the permission.
val intent = Intent(
Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
Uri.parse("package:$packageName")
)
startActivityForResult(
intent,
CODE_DRAW_OVER_OTHER_APP_PERMISSION
)
}
}
And in onActivityResult you can check permission is granted or not
override fun onActivityResult(
requestCode: Int,
resultCode: Int,
data: Intent?
) {
if (requestCode == CODE_DRAW_OVER_OTHER_APP_PERMISSION) {
if (Settings.canDrawOverlays(this)) {
// Permission Granted
} else {
// Permission not Granted
// If you want then call again checkOverlayPermission until permission granted
}
}
}
I have a basic File Browser inside my app and I want it to be able to open PDF files, but for some reason, even though I can tap on the PDF files and they open for a second, they go away and my phone gives a Toast message with an error, and this Toast I haven't programmed anywhere in my code. This is weird because the same PDF file opens from my other activities without any issues. (See the OpenPDF() Method which works from my PDFManager class) I researched a lot about how to fix this but couldn't find a clear answer. Thanks for helping!
The toast error: Cannot display PDF (filename.pdf cannot be opened)
OnListItemClick function from AndroidFileBrowser:
#Override
protected void onListItemClick(ListView l, View v, int position, long id) {
String filename = (String) getListAdapter().getItem(position);
if (path.endsWith(File.separator)) {
filename = path + filename;
} else {
filename = path + File.separator + filename;
}
pdf = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS).getPath() + "/PATH/" + filename);
Uri path = Uri.fromFile(pdf);
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
intent.setDataAndType(path, "application/pdf");
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
try {
startActivity(intent);
} catch (ActivityNotFoundException e) {
e.printStackTrace();
}
}
AndroidManifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest package="com.faraz.pdfreader"
xmlns:android="http://schemas.android.com/apk/res/android">
<uses-permission android:name="android.permission.CAMERA"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme"
>
<activity
android:name=".MainActivity"
android:label="#string/app_name"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<activity
android:name=".SimpleScannerActivity"
android:label="#string/simple_scanner_activity"
android:theme="#style/AppOverlayTheme">
</activity>
<activity android:name=".PDFManager"/>
<activity android:name=".AndroidFileBrowser"/>
<!--android:screenOrientation="portrait"-->
</application>
</manifest>
OpenPDF() method from my PDFManager class
public void openPDF() {
File pdf = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS).getPath() + "/PATH/" + pdfname + ".pdf");
if (pdf.exists()) {
Uri path = Uri.fromFile(pdf);
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
intent.setDataAndType(path, "application/pdf");
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
try {
startActivity(intent);
} catch (ActivityNotFoundException e) {
Toast.makeText(PDFManager.this,
"No application available to view PDF!",
Toast.LENGTH_SHORT).show();
/* Intent intent = new Intent(Intent.ACTION_VIEW)
.setData(Uri.parse("http://docs.google.com/gview?embedded=true&url=" + url));
startActivity(intent);
}
*/
}
}
}
}
In your OnItemClick():
if (path.endsWith(File.separator))
{
filename = path + filename;
}
else
{
filename = path + File.separator + filename;
}
pdf = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS).getPath() + "/PATH/" + filename);
Uri path = Uri.fromFile(pdf);
You use "path" before you initialize it, so depending on your intentions either change the name of one or the other, or declare it before your if-statement not after.