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Fix for cases where no external storage is attached (#58)

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* Fix for cases where context.getExternalCacheDir() returns null because there is no external storage attached.

* Fix crash when WRITE_EXTERNAL_STORAGE permission is missing on API level < 19
This commit is contained in:
Hristo Hristov
2016-10-17 16:16:55 +03:00
committed by GitHub
parent 626e148e2b
commit 00297e069f
1 changed files with 13 additions and 6 deletions
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19
android/widgets/src/main/java/org/nativescript/widgets/Image/Cache.java
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@@ -16,8 +16,10 @@
package org.nativescript.widgets.image;
import android.Manifest;
import android.annotation.TargetApi;
import android.content.Context;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.BitmapFactory;
@@ -333,11 +335,11 @@ public class Cache {
public static File getDiskCacheDir(Context context, String uniqueName) {
// Check if media is mounted or storage is built-in, if so, try and use external cache dir
// otherwise use internal cache dir
final String cachePath =
Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState()) ||
!isExternalStorageRemovable() ? getExternalCacheDir(context).getPath() :
context.getCacheDir().getPath();
final File cacheFilePath = Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState()) ||
!isExternalStorageRemovable() ? getExternalCacheDir(context) : context.getCacheDir();
// In case there is no external storage isExternalStorageRemovable returns False and we get Null from getExternalCacheDir.
// If this is the case - fall back to internal cache dir.
final String cachePath = cacheFilePath != null ? cacheFilePath.getPath() : context.getCacheDir().getPath();
return new File(cachePath + File.separator + uniqueName);
}
@@ -417,7 +419,12 @@ public class Cache {
@TargetApi(VERSION_CODES.FROYO)
public static File getExternalCacheDir(Context context) {
if (Utils.hasFroyo()) {
return context.getExternalCacheDir();
if (Utils.hasKitKat() ||
context.checkPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE, android.os.Process.myPid(), android.os.Process.myUid()) == PackageManager.PERMISSION_GRANTED) {
return context.getExternalCacheDir();
}
return null;
}
// Before Froyo we need to construct the external cache dir ourselves