Saya ingin menyimpan file ke penyimpanan internal saya secara pribadi sehingga hanya aplikasi saya yang dapat mengaksesnya. Menurut situs pengembang Android, secara default, file yang disimpan ke penyimpanan internal bersifat pribadi untuk aplikasi Anda dan aplikasi lain tidak dapat mengakses mereka (pengguna juga tidak bisa). Namun ketika saya menyimpan file saya menggunakan Environment.getExternalStorageDirectory(); file tersebut jelas dapat diakses oleh siapa saja. Saya telah mencoba menggunakan getFilesDir() karena tampaknya ini menjadikan file Anda pribadi tetapi aplikasi saya terus mogok. Di bawah ini adalah kode saya:
public class SaveOpen extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_save_open);
isSDCardAvailable();
Button david = (Button) findViewById(R.id.button1);
david.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
File pdfFile = new File(getFilesDir().getAbsolutePath() + "/MathBarsPDFDocumentTestNew/userg.pdf");
Uri path = Uri.fromFile(pdfFile);
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
intent.setDataAndType(path, "application/pdf");
try {
startActivity(intent);
} catch (ActivityNotFoundException e) {
// No application to view, ask to download one
AlertDialog.Builder builder = new AlertDialog.Builder(
SaveOpen.this);
builder.setTitle("No Application Found");
builder.setMessage("Download one from Android Market?");
builder.setPositiveButton("Yes, Please",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Intent marketIntent = new Intent(Intent.ACTION_VIEW);
marketIntent.setData(Uri
.parse("market://details?id=com.adobe.reader"));
startActivity(marketIntent);
}
});
builder.setNegativeButton("No, Thanks", null);
builder.create().show();
}
}
});
}
public void isSDCardAvailable(){
String state = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED.toString().equals(state.toString())) {
//File sdDir = Environment.getExternalStorageDirectory();
File sdDir = getFilesDir();
File newdir = new File(sdDir.getAbsolutePath() + "/MathBarsPDFDocumentTestNew");
newdir.mkdirs();
File file = new File(newdir, "userg.pdf");
try {
FileOutputStream f = new FileOutputStream(file);
AssetManager assetManager = getAssets();
InputStream input = assetManager.open("userguide.pdf");
byte[] buffer = new byte[1024];
int read;
while ((read = input.read(buffer)) != -1) {
f.write(buffer, 0, read);
}
f.close();
input.close();
} catch (Exception e) {
Log.d("Downloader", e.getMessage());
}
}else{
AlertDialog.Builder builder = new AlertDialog.Builder(
SaveOpen.this);
builder.setTitle("No SD Card available");
builder.setMessage("Please Insert SD Card");
builder.setNegativeButton("Cancel", null);
builder.create().show();
}
}
}
Ada saran? Di bawah ini adalah log kucing saya:
03-05 11:02:19.520: I/ActivityManager(164): START {act=android.intent.action.VIEW dat=file:///data/data/com.david.openpdf/files/MathBarsPDFDocumentTestNew/userg.pdf typ=application/pdf flg=0x4000000 cmp=com.adobe.reader/.AdobeReader} from pid 2684
03-05 11:02:19.570: I/ActivityManager(164): START {cmp=com.adobe.reader/.ARViewer (has extras)} from pid 2697
03-05 11:02:19.620: I/ActivityManager(164): Displayed com.adobe.reader/.AdobeReader: +77ms
03-05 11:02:19.660: D/OpenGLRenderer(2684): Flushing caches (mode 0)
03-05 11:02:19.680: V/TabletStatusBar(243): setLightsOn(true)
03-05 11:02:19.700: D/OpenGLRenderer(2684): Flushing caches (mode 1)
03-05 11:02:35.630: E/System(2697): Uncaught exception thrown by finalizer
03-05 11:02:35.630: E/System(2697): java.lang.NullPointerException
03-05 11:02:35.630: E/System(2697): at com.omniture.AppMeasurementBaseSE13.finalize(AppMeasurementBaseSE13.java:43)
03-05 11:02:35.630: E/System(2697): at java.lang.Daemons$FinalizerDaemon.doFinalize(Daemons.java:182)
03-05 11:02:35.630: E/System(2697): at java.lang.Daemons$FinalizerDaemon.run(Daemons.java:168)
03-05 11:02:35.630: E/System(2697): at java.lang.Thread.run(Thread.java:856)
03-05 11:02:35.660: D/dalvikvm(164): GC_CONCURRENT freed 1044K, 26% free 11680K/15751K, paused 2ms+5ms
03-05 11:02:44.640: I/wpa_supplicant(229): wlan0: WPA: Group rekeying completed with 00:1c:b3:ae:95:09 [GTK=CCMP]
Dan di layar saya tertulis Error: The document path is not valid
