Add Oppo, Realme and OnePlus trick and a clear default button

app/src/main/AndroidManifest.xml

@@ -25,7 +25,7 @@
         <activity-alias android:name=".OppoTrick"
             android:targetActivity=".MainActivity"
             android:exported="true"
-            android:enabled="true">
+            android:enabled="false">
             <intent-filter android:label="@string/installer_trick">
                 <action android:name="android.intent.action.VIEW"/>
                 <action android:name="android.intent.action.INSTALL_PACKAGE"/>

app/src/main/java/com/example/kinginstaller/MainActivity.java

@@ -5,15 +5,19 @@
 import androidx.core.content.FileProvider;
 
 import android.Manifest;
+import android.app.Activity;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
+import android.content.SharedPreferences;
+import android.content.pm.PackageManager;
 import android.database.Cursor;
 import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
 import android.os.Environment;
 import android.provider.OpenableColumns;
+import android.provider.Settings;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
@@ -28,13 +32,14 @@
 import java.io.InputStream;
 
 import static android.provider.Settings.ACTION_MANAGE_APP_ALL_FILES_ACCESS_PERMISSION;
+import static android.service.notification.Condition.SCHEME;
 
 public class MainActivity extends AppCompatActivity {
 
     private static final int FILE_SELECT_CODE = 1;
     private static final int PERMISSION_REQUEST_CODE = 2;
+    boolean oppo_trick;
 
-    boolean oppo_trick = false;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -68,16 +73,6 @@ public void onClick(View v) {
                 }
             }
         });
-        /*
-        //TEST TO MAKE OPPO TRICK DISABLED AS DEFAULT AND AVOID HAVE AN UNUSEFUL FAKE INSTALLER
-        CheckBox oppoTrick = findViewById(R.id.checkBox);
-        oppoTrick.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                oppo_trick = true;
-            }
-        });
-         */
 
         TextView siteAnnexhack = findViewById(R.id.site_annexhack);
         siteAnnexhack.setOnClickListener(new View.OnClickListener() {
@@ -93,8 +88,58 @@ public void onClick(View v) {
                 }
             }
         });
+
+        //MAKE OPPO TRICK DISABLED AS DEFAULT AND AVOID HAVE AN UNUSEFUL FAKE INSTALLER
+        SharedPreferences oppoTrickStatus = getSharedPreferences("oppo_trick_value", Activity.MODE_PRIVATE);
+        oppo_trick = oppoTrickStatus.getBoolean("oppo_trick_value",false);
+        CheckBox oppoTrick = (CheckBox) findViewById(R.id.checkBox);
+        oppoTrick.setChecked(oppo_trick);
+        oppoTrick.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                oppo_trick = !oppo_trick;
+                SharedPreferences.Editor editor = oppoTrickStatus.edit();
+                editor.putBoolean("oppo_trick_value", oppo_trick);
+                editor.apply();
+                oppoTrick.setChecked(oppo_trick);
+                OppoTrick();
+            }
+        });
+        //RESET BUTTON TO OPEN DEFAULT PACKAGE INSTALLER TO CAN CLEAR AS DEFAULT SETTING
+        Button resetButton = findViewById(R.id.resetButton);
+        resetButton.setOnClickListener(new View.OnClickListener() {
+            public void onClick(View v) {
+                try {
+                    Intent intent = new Intent(android.provider.Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
+                    intent.setData(Uri.parse("package:" + "com.google.android.packageinstaller"));
+                    startActivity(intent);
+                } catch (Exception e) {
+                    TextView tv = findViewById(R.id.textViewError);
+                    tv.setText(e.toString());
+                }
+            }
+        });
     }
 
+    public void OppoTrick() {
+        //MAKE OPPO TRICK DISABLED AS DEFAULT AND AVOID HAVE AN UNUSEFUL FAKE INSTALLER
+        PackageManager pm = getApplicationContext().getPackageManager();
+        if (oppo_trick) {
+            ComponentName oppoTrickFlagged =
+                    new ComponentName(getPackageName(), getPackageName() + ".OppoTrick");
+            pm.setComponentEnabledSetting(
+                    oppoTrickFlagged,
+                    PackageManager.COMPONENT_ENABLED_STATE_ENABLED,
+                    PackageManager.DONT_KILL_APP);
+        } else {
+            ComponentName oppoTrickFlagged =
+                    new ComponentName(getPackageName(), getPackageName() + ".OppoTrick");
+            pm.setComponentEnabledSetting(
+                    oppoTrickFlagged,
+                    PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
+                    PackageManager.DONT_KILL_APP);
+        }
+    }
 
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
@@ -119,12 +164,12 @@ private void installAsKing() {
             EditText et = findViewById(R.id.pathTextEdit);
             String filepath = et.getText().toString();
             if (filepath.length() == 0) {
-                Toast.makeText(this, "Please select a file first", Toast.LENGTH_SHORT).show();
+                Toast.makeText(this, R.string.select_a_file, Toast.LENGTH_SHORT).show();
                 return;
             }
             File myFile = new File(filepath);
             if (!myFile.exists()) {
-                Toast.makeText(this, "Error: file not exists", Toast.LENGTH_SHORT).show();
+                Toast.makeText(this, R.string.file_error, Toast.LENGTH_SHORT).show();
                 return;
             }
             Intent intent = new Intent(Intent.ACTION_INSTALL_PACKAGE);
@@ -137,13 +182,6 @@ private void installAsKing() {
             et.setText("");
             TextView tv = findViewById(R.id.textViewError);
             tv.setText("");
-            /*
-               //TEST TO MAKE OPPO TRICK DISABLED AS DEFAULT AND AVOID HAVE AN UNUSEFUL FAKE INSTALLER
-            if (oppo_trick) {
-                ComponentName oppoTrickFlagged = new ComponentName(getPackageName(), getPackageName()+".OppoTrick");
-                intent.setComponent(oppoTrickFlagged);
-            }
-             */
             startActivity(intent);
         } catch (Exception e) {
             TextView tv = findViewById(R.id.textViewError);

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

@@ -77,14 +77,36 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:text="@string/install_as_king" />
-        <!--
+
         <CheckBox
             android:id="@+id/checkBox"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
+            android:layout_marginLeft="15dp"
+            android:layout_marginTop="5dp"
+            android:layout_marginRight="15dp"
+            android:layout_marginBottom="5dp"
             android:layout_gravity="center_horizontal"
             android:text="@string/oppo_trick" />
-         -->
+
+        <Button
+            android:id="@+id/resetButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/reset_default" />
+        <TextView
+            android:id="@+id/textView5"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginLeft="15dp"
+            android:layout_marginTop="10dp"
+            android:layout_marginRight="15dp"
+            android:layout_marginBottom="10dp"
+            android:fontFamily="casual"
+            android:gravity="center"
+            android:lines="6"
+            android:text="@string/reset_default_description"
+            android:textSize="12sp" />
         <TextView
             android:id="@+id/textViewError"
             android:layout_width="match_parent"

app/src/main/res/values-it/strings.xml

@@ -11,4 +11,8 @@
     <string name="jen94">Grazie jen94!, mod by fcaronte</string>
     <string name="oppo_trick">Attiva se usi un telefono Oppo, Realme o OnePlus</string>
     <string name="source_code">Codice Sorgente</string>
+    <string name="select_a_file">Prima scegli un file</string>
+    <string name="file_error">Errore: il file non esiste</string>
+    <string name="reset_default">Resetta Default</string>
+    <string name="reset_default_description">Usa il tasto \"Resetta Default\" per aprire l\'installatore pacchetto di Google e poterlo resettare se lo hai impostato per sbaglio come default e non esce più il popup. Dopo aver cliccato il tasto di reset, cerca \"Cancella Preferenze Predefinite\" PS se quando clicchi non succede nulla e da errore, è perché il tuo telefono usa un altro \"Installatore Pacchetto\" e quindi dovrai cercarlo manualmente dalle impostazioni del telefono</string>
 </resources>

app/src/main/res/values-ru/strings.xml

@@ -10,4 +10,8 @@
     <string name="jen94">Спасибо jen94!, mod by fcaronte</string>
     <string name="oppo_trick">Enable if you use Oppo, Realme or OnePlus phone</string>
     <string name="source_code">Source code</string>
+    <string name="select_a_file">Please select a file first</string>
+    <string name="file_error">Error: file not exists</string>
+    <string name="reset_default">Reset Default</string>
+    <string name="reset_default_description">Use \"Reset Default\" button to open default Google PackageInstaller if you wrongly set as default and popup won\'t show anymore. After touch \"Reset Default\" button, search for \"Clear Default Preference\" PS if button give an error is because your phone use a different PackageInstaller and so you need to manually search on your phone setting</string>
 </resources>

app/src/main/res/values/strings.xml

@@ -10,4 +10,8 @@
     <string name="jen94">Thanks jen94!, mod by fcaronte</string>
     <string name="oppo_trick">Enable if you use Oppo, Realme or OnePlus phone</string>
     <string name="source_code">Source code</string>
+    <string name="select_a_file">Please select a file first</string>
+    <string name="file_error">Error: file not exists</string>
+    <string name="reset_default">Reset Default</string>
+    <string name="reset_default_description">Use \"Reset Default\" button to open default Google PackageInstaller if you wrongly set as default and popup won\'t show anymore. After touch \"Reset Default\" button, search for \"Clear Default Preference\" PS if button give an error is because your phone use a different PackageInstaller and so you need to manually search on your phone setting</string>
 </resources>