feat(library/demo): add some simple APIs

Signed-off-by: YuutaW <17158086+Trumeet@users.noreply.github.com>

2 files changed, 32 insertions, 6 deletions

diff --git a/app/src/main/java/moe/yuuta/ohmysafdemo/MainActivity.java b/app/src/main/java/moe/yuuta/ohmysafdemo/MainActivity.java
index 52b611d..04ec5d3 100644
--- a/app/src/main/java/moe/yuuta/ohmysafdemo/MainActivity.java
+++ b/app/src/main/java/moe/yuuta/ohmysafdemo/MainActivity.java
@@ -16,7 +16,6 @@ import android.view.View;
 import android.widget.ImageView;
 import android.widget.Toast;
 
-import java.io.File;
 import java.io.FileDescriptor;
 import java.io.IOException;
 import java.io.OutputStream;
@@ -32,7 +31,7 @@ public class MainActivity extends Activity implements View.OnClickListener {
 
     private ImageView mImage;
     private volatile Bitmap mBitmap;
-    private File mFile;
+    private SafFile mFile;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -87,7 +86,7 @@ public class MainActivity extends Activity implements View.OnClickListener {
             @Override
             public void run() {
                 try {
-                    OutputStream stream = getContentResolver().openOutputStream(((SafFile) mFile).getAndroidUri(), "w");
+                    OutputStream stream = mFile.openOutputStream(MainActivity.this, "w");
                     mBitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
                     stream.flush();
                     stream.close();
@@ -105,8 +104,7 @@ public class MainActivity extends Activity implements View.OnClickListener {
             @Override
             public void run() {
                 try {
-                    ParcelFileDescriptor parcelFileDescriptor =
-                            getContentResolver().openFileDescriptor(((SafFile) mFile).getAndroidUri(), "r");
+                    ParcelFileDescriptor parcelFileDescriptor = mFile.openFileDescriptor(MainActivity.this, "r");
                     FileDescriptor fileDescriptor = parcelFileDescriptor.getFileDescriptor();
                     mBitmap = BitmapFactory.decodeFileDescriptor(fileDescriptor);
                     parcelFileDescriptor.close();
@@ -191,7 +189,7 @@ public class MainActivity extends Activity implements View.OnClickListener {
     }
 
     private void runTakePersistablePermission() {
-        getContentResolver().takePersistableUriPermission(((SafFile) mFile).getAndroidUri(),
+        mFile.takePersistableUriPermission(this,
                 Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
         log("Done");
     }
diff --git a/ohmysaf/src/main/java/moe/yuuta/ohmysaf/SafFile.java b/ohmysaf/src/main/java/moe/yuuta/ohmysaf/SafFile.java
index 3aaee77..e433c14 100644
--- a/ohmysaf/src/main/java/moe/yuuta/ohmysaf/SafFile.java
+++ b/ohmysaf/src/main/java/moe/yuuta/ohmysaf/SafFile.java
@@ -1,16 +1,22 @@
 package moe.yuuta.ohmysaf;
 
+import android.content.Context;
 import android.net.Uri;
+import android.os.ParcelFileDescriptor;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.annotation.RequiresApi;
 import androidx.annotation.RestrictTo;
 import androidx.documentfile.provider.DocumentFile;
 
 import java.io.File;
 import java.io.FileFilter;
+import java.io.FileNotFoundException;
 import java.io.FilenameFilter;
 import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
 import java.net.MalformedURLException;
 import java.net.URI;
 import java.net.URL;
@@ -18,6 +24,8 @@ import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.List;
 
+import static android.os.Build.VERSION_CODES.KITKAT;
+
 public class SafFile extends File {
     private final DocumentFile mOrig;
 
@@ -342,4 +350,24 @@ public class SafFile extends File {
     public URL toURL() throws MalformedURLException {
         return new URL(mOrig.getUri().toString());
     }
+
+    @Nullable
+    public ParcelFileDescriptor openFileDescriptor(@NonNull Context context, @NonNull String mode) throws FileNotFoundException {
+        return context.getContentResolver().openFileDescriptor(getAndroidUri(), mode);
+    }
+
+    @Nullable
+    public OutputStream openOutputStream(@NonNull Context context, @NonNull String mode) throws FileNotFoundException {
+        return context.getContentResolver().openOutputStream(getAndroidUri(), mode);
+    }
+
+    @Nullable
+    public InputStream openInputStream(@NonNull Context context) throws FileNotFoundException {
+        return context.getContentResolver().openInputStream(getAndroidUri());
+    }
+
+    @RequiresApi(KITKAT)
+    public void takePersistableUriPermission(@NonNull Context context, int modeFlags) {
+        context.getContentResolver().takePersistableUriPermission(getAndroidUri(), modeFlags);
+    }
 }