Develop Reference

Issue in creating a sample app for microstream in Android

I am trying to build a sample android app for microstream but getting the error.
Gradle Dependencies
dependencies {
implementation 'one.microstream:microstream-storage-embedded:05.00.02-MS-GA'
...
}
Error
Process: com.example.microstream, PID: 6369
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.microstream/com.example.microstream.MainActivity}: one.microstream.persistence.exceptions.PersistenceException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2913)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Caused by: one.microstream.persistence.exceptions.PersistenceException
at one.microstream.persistence.internal.PersistenceTypeDictionaryFileHandler.writeTypeDictionary(PersistenceTypeDictionaryFileHandler.java:107)
at one.microstream.persistence.internal.PersistenceTypeDictionaryFileHandler.writeTypeDictionary(PersistenceTypeDictionaryFileHandler.java:203)
at one.microstream.persistence.internal.PersistenceTypeDictionaryFileHandler.storeTypeDictionary(PersistenceTypeDictionaryFileHandler.java:209)
at one.microstream.persistence.types.PersistenceTypeDictionaryExporter$Default.exportTypeDictionary(PersistenceTypeDictionaryExporter.java:93)
at one.microstream.persistence.types.PersistenceTypeDictionaryManager$Exporting.exportTypeDictionary(PersistenceTypeDictionaryManager.java:267)
at one.microstream.persistence.types.PersistenceTypeDictionaryManager$Exporting.synchUpdateExport(PersistenceTypeDictionaryManager.java:258)
at one.microstream.persistence.types.PersistenceTypeDictionaryManager$Exporting.registerRuntimeTypeDefinitions(PersistenceTypeDictionaryManager.java:324)
at one.microstream.persistence.types.PersistenceTypeHandlerManager$Default.synchUnvalidatedRegisterTypeHandlers(PersistenceTypeHandlerManager.java:662)
at one.microstream.persistence.types.PersistenceTypeHandlerManager$Default.registerTypeHandlers(PersistenceTypeHandlerManager.java:644)
at one.microstream.persistence.types.PersistenceTypeHandlerManager$Default.initialRegisterTypeHandlers(PersistenceTypeHandlerManager.java:687)
at one.microstream.persistence.types.PersistenceTypeHandlerManager$Default.synchInternalInitialize(PersistenceTypeHandlerManager.java:968)
at one.microstream.persistence.types.PersistenceTypeHandlerManager$Default.initialize(PersistenceTypeHandlerManager.java:941)
at one.microstream.storage.embedded.types.EmbeddedStorageFoundation$Default.createEmbeddedStorageManager(EmbeddedStorageFoundation.java:791)
at one.microstream.storage.embedded.types.EmbeddedStorage.createAndStartStorageManager(EmbeddedStorage.java:649)
at one.microstream.storage.embedded.types.EmbeddedStorage.start(EmbeddedStorage.java:467)
at one.microstream.storage.embedded.types.EmbeddedStorage.start(EmbeddedStorage.java:317)
at com.example.microstream.MainActivity.microstreamStorageManager(MainActivity.kt:52)
at com.example.microstream.MainActivity.checkPermission(MainActivity.kt:78)
at com.example.microstream.MainActivity.onCreate(MainActivity.kt:47)
at android.app.Activity.performCreate(Activity.java:7136)
at android.app.Activity.performCreate(Activity.java:7127)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048) 
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78) 
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108) 
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808) 
at android.os.Handler.dispatchMessage(Handler.java:106) 
at android.os.Looper.loop(Looper.java:193) 
at android.app.ActivityThread.main(ActivityThread.java:6669) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858) 
Caused by: one.microstream.exceptions.IORuntimeException: java.nio.file.AccessDeniedException: storage/PersistenceTypeDictionary.ptd
2021-10-20 07:26:34.758 6369-6369/com.example.microstream E/AndroidRuntime: at one.microstream.afs.nio.types.NioIoHandler$Default.specificCreate(NioIoHandler.java:324)
at one.microstream.afs.nio.types.NioIoHandler$Default.specificCreate(NioIoHandler.java:1)
at one.microstream.afs.types.AIoHandler$Abstract.create(AIoHandler.java:701)
at one.microstream.afs.types.AWritableFile.create(AWritableFile.java:102)
at one.microstream.persistence.internal.PersistenceTypeDictionaryFileHandler.writeTypeDictionary(PersistenceTypeDictionaryFileHandler.java:91)
... 33 more
Caused by: java.nio.file.AccessDeniedException: storage/PersistenceTypeDictionary.ptd
at sun.nio.fs.UnixFileSystemProvider.newByteChannel(UnixFileSystemProvider.java:214)
at java.nio.file.Files.newByteChannel(Files.java:361)
at java.nio.file.Files.createFile(Files.java:632)
at one.microstream.afs.nio.types.NioIoHandler$Default.specificCreate(NioIoHandler.java:320)
... 37 more
How to resolve this issue?

The problem is described in the log. You are trying to write to a location where the application cannot store data.
To get the path for writing data, you can use for example:
Context instrumentationContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
targetDirectory = instrumentationContext.getFilesDir().toPath();
targetDirectory = targetDirectory.resolve("storage");
targetDirectory.toFile().mkdir();
and after that:
EmbeddedStorageManager storage = EmbeddedStorage.start(root, targetDirectory);

When choose Pick from gallery or camera options get error

E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.m3h.pmne, PID: 19352
java.lang.RuntimeException: Parcelable encountered IOException writing serializable object (name = com.m3h.pmne.ServerResponse.FormParentResponse)
at android.os.Parcel.writeSerializable(Parcel.java:1730)
at android.os.Parcel.writeValue(Parcel.java:1678)
at android.os.Parcel.writeArrayMapInternal(Parcel.java:891)
at android.os.BaseBundle.writeToParcelInner(BaseBundle.java:1579)
at android.os.Bundle.writeToParcel(Bundle.java:1233)
at android.os.Parcel.writeBundle(Parcel.java:931)
at androidx.fragment.app.FragmentState.writeToParcel(FragmentState.java:125)
at android.os.Parcel.writeTypedObject(Parcel.java:1532)
at android.os.Parcel.writeTypedList(Parcel.java:1411)
at android.os.Parcel.writeTypedList(Parcel.java:1396)
at androidx.fragment.app.FragmentManagerState.writeToParcel(FragmentManagerState.java:58)
at android.os.Parcel.writeParcelable(Parcel.java:1699)
at android.os.Parcel.writeValue(Parcel.java:1605)
at android.os.Parcel.writeArrayMapInternal(Parcel.java:891)
at android.os.BaseBundle.writeToParcelInner(BaseBundle.java:1579)
at android.os.Bundle.writeToParcel(Bundle.java:1233)
at android.os.Parcel.writeBundle(Parcel.java:931)
at android.os.Parcel.writeValue(Parcel.java:1596)
at android.os.Parcel.writeArrayMapInternal(Parcel.java:891)
at android.os.BaseBundle.writeToParcelInner(BaseBundle.java:1579)
at android.os.Bundle.writeToParcel(Bundle.java:1233)
at android.os.Parcel.writeBundle(Parcel.java:931)
at android.os.Parcel.writeValue(Parcel.java:1596)
at android.os.Parcel.writeArrayMapInternal(Parcel.java:891)
at android.os.BaseBundle.writeToParcelInner(BaseBundle.java:1579)
at android.os.Bundle.writeToParcel(Bundle.java:1233)
at android.app.IActivityManager$Stub$Proxy.activityStopped(IActivityManager.java:3858)
at android.app.servertransaction.PendingTransactionActions$StopInfo.run(PendingTransactionActions.java:144)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7156)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:975)
Caused by: java.io.NotSerializableException: com.m3h.pmne.ServerResponse.Data
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1240)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1604)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1565)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1488)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1234)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:354)
at android.os.Parcel.writeSerializable(Parcel.java:1725)
at android.os.Parcel.writeValue(Parcel.java:1678) 
at android.os.Parcel.writeArrayMapInternal(Parcel.java:891) 
at android.os.BaseBundle.writeToParcelInner(BaseBundle.java:1579) 
at android.os.Bundle.writeToParcel(Bundle.java:1233) 
at android.os.Parcel.writeBundle(Parcel.java:931) 
at androidx.fragment.app.FragmentState.writeToParcel(FragmentState.java:125) 
at android.os.Parcel.writeTypedObject(Parcel.java:1532) 
at android.os.Parcel.writeTypedList(Parcel.java:1411) 
at android.os.Parcel.writeTypedList(Parcel.java:1396) 
at androidx.fragment.app.FragmentManagerState.writeToParcel(FragmentManagerState.java:58) 
at android.os.Parcel.writeParcelable(Parcel.java:1699) 
at android.os.Parcel.writeValue(Parcel.java:1605) 
at android.os.Parcel.writeArrayMapInternal(Parcel.java:891) 
at android.os.BaseBundle.writeToParcelInner(BaseBundle.java:1579) 
at android.os.Bundle.writeToParcel(Bundle.java:1233) 
at android.os.Parcel.writeBundle(Parcel.java:931) 
at android.os.Parcel.writeValue(Parcel.java:1596) 
at android.os.Parcel.writeArrayMapInternal(Parcel.java:891) 
at android.os.BaseBundle.writeToParcelInner(BaseBundle.java:1579) 
at android.os.Bundle.writeToParcel(Bundle.java:1233) 
at android.os.Parcel.writeBundle(Parcel.java:931) 
at android.os.Parcel.writeValue(Parcel.java:1596) 
at android.os.Parcel.writeArrayMapInternal(Parcel.java:891) 
at android.os.BaseBundle.writeToParcelInner(BaseBundle.java:1579) 
at android.os.Bundle.writeToParcel(Bundle.java:1233) 
at android.app.IActivityManager$Stub$Proxy.activityStopped(IActivityManager.java:3858) 
at android.app.servertransaction.PendingTransactionActions$StopInfo.run(PendingTransactionActions.java:144) 
at android.os.Handler.handleCallback(Handler.java:873) 
at android.os.Handler.dispatchMessage(Handler.java:99) 
at android.os.Looper.loop(Looper.java:214) 
at android.app.ActivityThread.main(ActivityThread.java:7156) 
at java.lang.reflect.Method.invoke(Native Method) 

RuntimeException : when calling BillingClient function in in app purchase

private BillingClient billingClient = BillingClient.newBuilder(activity)
.setListener(purchasesUpdatedListener)
.enablePendingPurchases()
.build();
I am integrating billing google api for purchase but when I call this method, I get an error in place of activity.
The error is:
/AndroidRuntime: FATAL EXCEPTION: main
Process: com.xxxxx.xxxxx, PID: 9433
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.xxxxx.xxxx/com.xxxx.coins_history.activity.CoinsHistoryActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.Context android.content.Context.getApplicationContext()' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2876)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3081)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1831)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:201)
at android.app.ActivityThread.main(ActivityThread.java:6810)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:547)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:873)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.Context android.content.Context.getApplicationContext()' on a null object reference
at android.content.ContextWrapper.getApplicationContext(ContextWrapper.java:126)
at com.android.billingclient.api.BillingClientImpl.initialize(com.android.billingclient:billing##4.0.0:1)
at com.android.billingclient.api.BillingClientImpl.<init>(com.android.billingclient:billing##4.0.0:4)
at com.android.billingclient.api.BillingClientImpl.<init>(com.android.billingclient:billing##4.0.0:9)
at com.android.billingclient.api.BillingClient$Builder.build(com.android.billingclient:billing##4.0.0:4)
at com.jetmedianetwork.coins_history.activity.CoinsHistoryActivity.<init>(CoinsHistoryActivity.java:133)
at java.lang.Class.newInstance(Native Method)
at android.app.AppComponentFactory.instantiateActivity(AppComponentFactory.java:69)
at androidx.core.app.CoreComponentFactory.instantiateActivity(CoreComponentFactory.java:45)
at android.app.Instrumentation.newActivity(Instrumentation.java:1216)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2864)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3081) 
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78) 
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108) 
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1831) 
at android.os.Handler.dispatchMessage(Handler.java:106) 
at android.os.Looper.loop(Looper.java:201) 
at android.app.ActivityThread.main(ActivityThread.java:6810) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:547) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:873) 
E/FirebaseCrashlytics: Error handling uncaught exception
java.util.concurrent.TimeoutException
at com.google.firebase.crashlytics.internal.common.Utils.awaitEvenIfOnMainThread(Utils.java:122)
at com.google.firebase.crashlytics.internal.common.CrashlyticsController.handleUncaughtException(CrashlyticsController.java:231)
at com.google.firebase.crashlytics.internal.common.CrashlyticsController$1.onUncaughtException(CrashlyticsController.java:153)
at com.google.firebase.crashlytics.internal.common.CrashlyticsUncaughtExceptionHandler.uncaughtException(CrashlyticsUncaughtExceptionHandler.java:54)
at com.facebook.internal.instrument.crashreport.CrashHandler.uncaughtException(CrashHandler.java:65)
at org.chromium.base.JavaExceptionReporter.uncaughtException(chromium-Monochrome.aab-stable-432418123:6)
at java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:1068)
at java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:1063)
at java.lang.Thread.dispatchUncaughtException(Thread.java:1955)

I think the issue here is that there is a Null Pointer in your code since the billing client has not bee instantiated.
Try modifying the code as follows
private BillingClient billingClient = BillingClient!!.newBuilder(activity)
.setListener(purchasesUpdatedListener)
.enablePendingPurchases()
.build();

Error when setting up firebase messaging for background messages in kotlin flutter

My Application.kt contains:
package com.example.somename
import io.flutter.app.FlutterApplication
import io.flutter.plugin.common.PluginRegistry
import io.flutter.plugin.common.PluginRegistry.PluginRegistrantCallback
import io.flutter.plugins.GeneratedPluginRegistrant
import io.flutter.plugins.firebasemessaging.FlutterFirebaseMessagingService
class Application : FlutterApplication(), PluginRegistrantCallback {
override fun onCreate() {
super.onCreate()
FlutterFirebaseMessagingService.setPluginRegistrant(this);
}
override fun registerWith(registry: PluginRegistry?) {
io.flutter.plugins.firebasemessaging.FirebaseMessagingPlugin.registerWith(registry?.registrarFor("io.flutter.plugins.firebasemessaging.FirebaseMessagingPlugin"));
}
}
The error I get when running it:
√ Built build\app\outputs\flutter-apk\app-debug.apk.
E/AndroidRuntime(22518): FATAL EXCEPTION: main
E/AndroidRuntime(22518): Process: com.example.somename, PID: 22518
E/AndroidRuntime(22518): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.somename/com.example.somename.Application}: java.lang.ClassCastException: com.example.somename.Application cannot be cast to android.app.Activity
E/AndroidRuntime(22518): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2843)
E/AndroidRuntime(22518): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
E/AndroidRuntime(22518): at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
E/AndroidRuntime(22518): at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
E/AndroidRuntime(22518): at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
E/AndroidRuntime(22518): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
E/AndroidRuntime(22518): at android.os.Handler.dispatchMessage(Handler.java:106)
E/AndroidRuntime(22518): at android.os.Looper.loop(Looper.java:193)
E/AndroidRuntime(22518): at android.app.ActivityThread.main(ActivityThread.java:6669)
E/AndroidRuntime(22518): at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime(22518): at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
E/AndroidRuntime(22518): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
E/AndroidRuntime(22518): Caused by: java.lang.ClassCastException: com.example.somename.Application cannot be cast to android.app.Activity
E/AndroidRuntime(22518): at android.app.AppComponentFactory.instantiateActivity(AppComponentFactory.java:69)
E/AndroidRuntime(22518): at androidx.core.app.CoreComponentFactory.instantiateActivity(CoreComponentFactory.java:41)
E/AndroidRuntime(22518): at android.app.Instrumentation.newActivity(Instrumentation.java:1215)
E/AndroidRuntime(22518): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2831)
E/AndroidRuntime(22518):
I have all my imports working fine and everything runs alright when i do not try to implement the background messages feature. The kotlin file is also being called correctly in my Manifest file.
I'm not sure of exactly what I'm doing wrong and any insight will be helpful! Thanks.

App crashes on opening error:Unable to start activity Component Info

I was just coded a simple app and when i run it
I got this error
2019-05-16 15:12:46.079 6879-6879/net.perkglobal.myapplication E/AndroidRuntime: FATAL EXCEPTION: main
Process: net.perkglobal.myapplication, PID: 6879
java.lang.RuntimeException: Unable to start activity ComponentInfo{net.perkglobal.myapplication/net.perkglobal.myapplication.MainActivity}: java.lang.IllegalArgumentException: Not an array: class java.util.ArrayList
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2913)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Caused by: java.lang.IllegalArgumentException: Not an array: class java.util.ArrayList
at java.lang.reflect.Array.notAnArray(Array.java:823)
at java.lang.reflect.Array.get(Array.java:210)
at net.perkglobal.myapplication.MainActivity.onCreate(MainActivity.java:91)
at android.app.Activity.performCreate(Activity.java:7136)
at android.app.Activity.performCreate(Activity.java:7127)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048) 
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78) 
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108) 
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808) 
at android.os.Handler.dispatchMessage(Handler.java:106) 
at android.os.Looper.loop(Looper.java:193) 
at android.app.ActivityThread.main(ActivityThread.java:6669) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
According to the the error there is error in line 91.So i try changing it but nothing seems to work
can Someone please tell me what i should do
here is a part of code which has the error
TextView text= findViewById(R.id.WP);
List<String> list = new ArrayList<String>();
list.add("A");
list.add("B");
list.add("C");
list.add("D");
list.add("E");
list.add("F");
list.add("G");
list.add("H");
list.add("I");
list.add("J");
list.add("K");
list.add("L");
list.add("M");
list.add("N");
list.add("O");
list.add("P");
list.add("Q");
list.add("R");
list.add("S");
list.add("T");
list.add("U");
list.add("V");
list.add("W");
list.add("X");
list.add("Y");
list.add("Z");
list.add("a");
list.add("b");
list.add("c");
list.add("d");
list.add("e");
list.add("f");
list.add("g");
list.add("h");
list.add("i");
list.add("j");
list.add("k");
list.add("l");
list.add("m");
list.add("n");
list.add("o");
list.add("p");
list.add("q");
list.add("r");
list.add("s");
list.add("t");
list.add("u");
list.add("v");
list.add("w");
list.add("x");
list.add("y");
list.add("z");
list.add("1");
list.add("2");
list.add("3");
list.add("4");
list.add("5");
list.add("6");
list.add("7");
list.add("8");
list.add("9");
list.add("0");
list.add(" "); for (int n=0 ;n<64;n++){
String string = Array.get(list,n).toString();
text.setText(string);}

change your for loop to this
Iterator i = list.iterator();
while (i.hasNext()) {
Log.d("string",i.next())
//your code goes here
}