RxPermission: hasRequested API to check if Permission has been requested once before.

.editorconfig

@@ -0,0 +1,7 @@
+[*.{kt,kts}]
+indent_size=2
+continuation_indent_size=2
+insert_final_newline=true
+ij_kotlin_allow_trailing_comma=true
+ij_kotlin_allow_trailing_comma_on_call_site=true
+disabled_rules=annotation,argument-list-wrapping,spacing-between-declarations-with-annotations,filename

build.gradle

@@ -50,6 +50,7 @@ buildscript {
 
   dependencies {
     classpath 'com.android.tools.build:gradle:7.2.2'
+    classpath 'org.jetbrains.kotlin:kotlin-gradle-plugin:1.7.10'
     classpath 'com.vanniktech:gradle-code-quality-tools-plugin:0.22.0'
     classpath 'com.vanniktech:gradle-maven-publish-plugin:0.21.0'
     classpath 'app.cash.licensee:licensee-gradle-plugin:1.5.0'

rxpermission-testing/dependencies/releaseRuntimeClasspath.txt

@@ -1,6 +1,8 @@
 androidx.annotation:annotation:1.4.0
 io.reactivex.rxjava2:rxjava:2.2.21
-org.jetbrains.kotlin:kotlin-stdlib-common:1.6.21
-org.jetbrains.kotlin:kotlin-stdlib:1.6.21
+org.jetbrains.kotlin:kotlin-stdlib-common:1.7.10
+org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.7.10
+org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.7.10
+org.jetbrains.kotlin:kotlin-stdlib:1.7.10
 org.jetbrains:annotations:13.0
 org.reactivestreams:reactive-streams:1.0.3

rxpermission-testing/src/main/java/com/vanniktech/rxpermission/testing/MockRxPermission.java

@@ -8,6 +8,8 @@
 import io.reactivex.annotations.NonNull;
 import io.reactivex.annotations.Nullable;
 import io.reactivex.functions.Function;
+import java.util.HashSet;
+import java.util.Set;
 
 import static com.vanniktech.rxpermission.Permission.State.GRANTED;
 import static com.vanniktech.rxpermission.Permission.State.REVOKED_BY_POLICY;
@@ -20,6 +22,8 @@
 public final class MockRxPermission implements RxPermission {
   private final Permission[] permissions;
 
+  private final Set<String> requestedPermissions = new HashSet<>();
+
   public MockRxPermission(final Permission... permissions) {
     this.permissions = permissions;
   }
@@ -66,11 +70,17 @@ public MockRxPermission(final Permission... permissions) {
 
   @Nullable Permission get(@NonNull final String name) {
     for (final Permission permission : permissions) {
+      requestedPermissions.add(name);
+
       if (permission.name().equals(name)) {
         return permission;
       }
     }
 
     return null;
   }
+
+  @Override public boolean hasRequested(@NonNull final String permission) {
+    return requestedPermissions.contains(permission);
+  }
 }

rxpermission-testing/src/test/java/com/vanniktech/rxpermission/testing/MockRxPermissionTest.java

@@ -8,6 +8,7 @@
 import static android.Manifest.permission.CALL_PHONE;
 import static android.Manifest.permission.CAMERA;
 import static org.assertj.core.api.Java6Assertions.assertThat;
+import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.fail;
 
 public final class MockRxPermissionTest {
@@ -149,6 +150,28 @@ public final class MockRxPermissionTest {
         .assertResult(callPhoneGranted, cameraGranted);
   }
 
+  @Test public void hasRequested() {
+    final MockRxPermission mockRxPermission = new MockRxPermission(callPhoneGranted, cameraGranted);
+    assertEquals(false, mockRxPermission.hasRequested(CALL_PHONE));
+    assertEquals(false, mockRxPermission.hasRequested(CAMERA));
+
+    mockRxPermission
+        .request(CALL_PHONE)
+        .test()
+        .assertResult(callPhoneGranted);
+
+    assertEquals(true, mockRxPermission.hasRequested(CALL_PHONE));
+    assertEquals(false, mockRxPermission.hasRequested(CAMERA));
+
+    mockRxPermission
+        .requestEach(CAMERA)
+        .test()
+        .assertResult(cameraGranted);
+
+    assertEquals(true, mockRxPermission.hasRequested(CALL_PHONE));
+    assertEquals(true, mockRxPermission.hasRequested(CAMERA));
+  }
+
   @Test public void isGranted() {
     assertThat(new MockRxPermission().isGranted(CAMERA)).isFalse();
     assertThat(new MockRxPermission(cameraGranted).isGranted(CAMERA)).isTrue();

rxpermission/build.gradle

@@ -1,10 +1,10 @@
 plugins {
   id("app.cash.licensee")
   id("com.dropbox.dependency-guard")
+  id("com.android.library")
+  id("org.jetbrains.kotlin.android")
 }
 
-apply plugin: 'com.android.library'
-
 licensee {
   allow("Apache-2.0")
   allow("CC0-1.0")

rxpermission/dependencies/releaseRuntimeClasspath.txt

@@ -1,6 +1,8 @@
 androidx.annotation:annotation:1.4.0
 io.reactivex.rxjava2:rxjava:2.2.21
-org.jetbrains.kotlin:kotlin-stdlib-common:1.6.21
-org.jetbrains.kotlin:kotlin-stdlib:1.6.21
+org.jetbrains.kotlin:kotlin-stdlib-common:1.7.10
+org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.7.10
+org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.7.10
+org.jetbrains.kotlin:kotlin-stdlib:1.7.10
 org.jetbrains:annotations:13.0
 org.reactivestreams:reactive-streams:1.0.3

rxpermission/src/main/java/com/vanniktech/rxpermission/RealRxPermission.java

@@ -3,6 +3,7 @@
 import android.annotation.TargetApi;
 import android.app.Application;
 import android.content.Context;
+import android.content.SharedPreferences;
 import androidx.annotation.ChecksSdkIntAtLeast;
 import io.reactivex.Observable;
 import io.reactivex.ObservableSource;
@@ -13,9 +14,14 @@
 import io.reactivex.functions.Function;
 import io.reactivex.subjects.PublishSubject;
 import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
+import java.util.Set;
+import org.jetbrains.annotations.NotNull;
 
 import static android.content.pm.PackageManager.PERMISSION_GRANTED;
 import static android.os.Build.VERSION.SDK_INT;
@@ -29,6 +35,8 @@ public final class RealRxPermission implements RxPermission {
   static final Object TRIGGER = new Object();
   static RealRxPermission instance;
 
+  static final String PREF_REQUESTED_PERMISSIONS = "requested-permissions";
+
   /**
    * @param context any context
    * @return a Singleton instance of this class
@@ -165,6 +173,15 @@ public static RealRxPermission getInstance(final Context context) {
   }
 
   void startShadowActivity(final String[] permissions) {
+    final SharedPreferences sharedPreferences = getSharedPreferences();
+    final Set<String> requestedPermission = new HashSet<>(sharedPreferences.getStringSet(PREF_REQUESTED_PERMISSIONS, Collections.emptySet()));
+    requestedPermission.addAll(Arrays.asList(permissions));
+
+    sharedPreferences
+        .edit()
+        .putStringSet(PREF_REQUESTED_PERMISSIONS, requestedPermission)
+        .apply();
+
     ShadowActivity.start(application, permissions);
   }
 
@@ -201,4 +218,14 @@ void onRequestPermissionsResult(@NonNull final int[] grantResults, @NonNull fina
   void cancelPermissionsRequests() {
     currentPermissionRequests.clear();
   }
+
+  @Override public boolean hasRequested(@NotNull String permission) {
+    final SharedPreferences sharedPreferences = getSharedPreferences();
+    final Set<String> requestedPermission = sharedPreferences.getStringSet(PREF_REQUESTED_PERMISSIONS, Collections.emptySet());
+    return requestedPermission.contains(permission);
+  }
+
+  private SharedPreferences getSharedPreferences() {
+    return application.getSharedPreferences("RxPermission", Context.MODE_PRIVATE);
+  }
 }

rxpermission/src/main/java/com/vanniktech/rxpermission/RxPermission.kt

@@ -0,0 +1,22 @@
+package com.vanniktech.rxpermission
+
+import io.reactivex.Observable
+import io.reactivex.Single
+import io.reactivex.annotations.CheckReturnValue
+
+interface RxPermission {
+  /** Requests a single permission.  */
+  @CheckReturnValue fun request(permission: String): Single<Permission?>
+
+  /** Requests multiple permissions.  */
+  @CheckReturnValue fun requestEach(vararg permissions: String): Observable<Permission?>
+
+  /** Returns true when the given permission is granted.  */
+  @CheckReturnValue fun isGranted(permission: String): Boolean
+
+  /** Returns true when the given permission is revoked by a policy.  */
+  @CheckReturnValue fun isRevokedByPolicy(permission: String): Boolean
+
+  /** Returns tue when the given permission has been request at least once using either [request] or [requestEach].  */
+  @CheckReturnValue fun hasRequested(permission: String): Boolean
+}

sample/dependencies/releaseRuntimeClasspath.txt

@@ -35,8 +35,8 @@ androidx.viewpager:viewpager:1.0.0
 com.google.guava:listenablefuture:1.0
 io.reactivex.rxjava2:rxjava:2.2.21
 org.jetbrains.kotlin:kotlin-stdlib-common:1.7.10
-org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.6.0
-org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.6.0
+org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.7.10
+org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.7.10
 org.jetbrains.kotlin:kotlin-stdlib:1.7.10
 org.jetbrains.kotlinx:kotlinx-coroutines-android:1.6.1
 org.jetbrains.kotlinx:kotlinx-coroutines-bom:1.6.1

sample/src/main/java/com/vanniktech/rxpermission/sample/MainActivity.java

@@ -1,20 +1,19 @@
 package com.vanniktech.rxpermission.sample;
 
 import android.Manifest;
+import android.annotation.SuppressLint;
 import android.os.Bundle;
-import android.view.View;
+import android.widget.TextView;
 import android.widget.Toast;
-import com.vanniktech.rxpermission.Permission;
-import com.vanniktech.rxpermission.RealRxPermission;
-import com.vanniktech.rxpermission.RxPermission;
-
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AppCompatActivity;
+import com.vanniktech.rxpermission.RealRxPermission;
+import com.vanniktech.rxpermission.RxPermission;
 import io.reactivex.disposables.CompositeDisposable;
-import io.reactivex.functions.Consumer;
 
 public class MainActivity extends AppCompatActivity {
+  private static final String PERMISSION = Manifest.permission.CAMERA;
   RxPermission rxPermission;
 
   @NonNull final CompositeDisposable compositeDisposable = new CompositeDisposable();
@@ -24,17 +23,18 @@ public class MainActivity extends AppCompatActivity {
     rxPermission = RealRxPermission.getInstance(getApplication());
 
     setContentView(R.layout.activity_main);
+    updateTextView();
+
+    findViewById(R.id.enableCamera).setOnClickListener(v -> compositeDisposable.add(rxPermission.requestEach(
+            PERMISSION)
+        .subscribe(granted -> {
+          updateTextView();
+          Toast.makeText(this, granted.toString(), Toast.LENGTH_LONG).show();
+        })));
+  }
 
-    findViewById(R.id.enableCamera).setOnClickListener(new View.OnClickListener() {
-      @Override public void onClick(final View v) {
-        compositeDisposable.add(rxPermission.requestEach(Manifest.permission.CAMERA)
-            .subscribe(new Consumer<Permission>() {
-              @Override public void accept(final Permission granted) throws Exception {
-                Toast.makeText(MainActivity.this, granted.toString(), Toast.LENGTH_LONG).show();
-              }
-            }));
-      }
-    });
+  @SuppressLint("SetTextI18n") private void updateTextView() {
+    this.<TextView>findViewById(R.id.textView).setText("Has requested: " + rxPermission.hasRequested(PERMISSION));
   }
 
   @Override protected void onDestroy() {

sample/src/main/res/layout/activity_main.xml

@@ -1,10 +1,26 @@
-<Button xmlns:android="http://schemas.android.com/apk/res/android"
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
-    android:id="@+id/enableCamera"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:layout_gravity="center_horizontal"
-    android:layout_marginTop="16dp"
-    android:text="Enable camera"
     tools:ignore="HardcodedText"
-    />
+    android:orientation="vertical"
+    >
+  <TextView
+      android:id="@+id/textView"
+      android:layout_width="wrap_content"
+      android:layout_height="wrap_content"
+      android:layout_gravity="center_horizontal"
+      android:layout_marginTop="16dp"
+      tools:ignore="HardcodedText"
+      />
+  <Button
+      android:id="@+id/enableCamera"
+      android:layout_width="wrap_content"
+      android:layout_height="wrap_content"
+      android:layout_gravity="center_horizontal"
+      android:layout_marginTop="16dp"
+      android:text="Enable camera"
+      tools:ignore="HardcodedText"
+      />
+</LinearLayout>