Added Intents and Content Provider basic implementation

Author: NickAsher

ContentProvider1_Implementation/.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx

ContentProvider1_Implementation/.idea/codeStyles/Project.xml

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+/build

ContentProvider1_Implementation/.idea/gradle.xml

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+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "29.0.3"
+
+    defaultConfig {
+        applicationId "com.example.contentprovider1_implementation"
+        minSdkVersion 19
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    implementation fileTree(dir: "libs", include: ["*.jar"])
+    implementation 'androidx.appcompat:appcompat:1.2.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.0'
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+
+}

ContentProvider1_Implementation/.idea/jarRepositories.xml

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

ContentProvider1_Implementation/.idea/misc.xml

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+package com.example.contentprovider1_implementation;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.example.contentprovider1_implementation", appContext.getPackageName());
+    }
+}

ContentProvider1_Implementation/.idea/runConfigurations.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.contentprovider1_implementation">
+
+    <uses-permission android:name="android.permission.READ_CONTACTS" />
+    <uses-permission android:name="android.permission.WRITE_CONTACTS" />
+    <uses-permission android:name="android.permission.READ_PROFILE" />
+    <uses-permission android:name="android.permission.WRITE_PROFILE" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <activity android:name=".Activity_Contacts" />
+
+    </application>
+
+</manifest>

ContentProvider1_Implementation/app/.gitignore

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+package com.example.contentprovider1_implementation;
+
+import android.content.ContentResolver;
+import android.database.Cursor;
+import android.net.Uri;
+import android.os.Bundle;
+import android.provider.ContactsContract;
+import android.view.View;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+public class Activity_Contacts extends AppCompatActivity {
+    ContentResolver contentResolver ;
+    TextView resultTextView ;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_contacts);
+        getReferences();
+
+        contentResolver = getContentResolver() ;
+    }
+
+    private void getReferences(){
+        resultTextView = findViewById(R.id.activityContentProvider_TextView_Result) ;
+
+    }
+
+    public void showAllContacts(View v){
+        Uri tableUri = ContactsContract.Contacts.CONTENT_URI ; // => Uri.parse("content://user_dictionary/words") ;
+        String[] arrayOfColumnNames = {
+                ContactsContract.Contacts._ID,
+                ContactsContract.Contacts.DISPLAY_NAME,
+//                ContactsContract.CommonDataKinds.Phone.NUMBER,
+
+        } ;
+
+        String sortOrder = ContactsContract.Contacts.DISPLAY_NAME + " DESC" ;
+
+        Cursor cursor = contentResolver.query(tableUri, arrayOfColumnNames, null, null, sortOrder) ;
+        Toast.makeText(this, "Count is " + cursor.getCount(), Toast.LENGTH_SHORT).show() ;
+        while(cursor.moveToNext()){
+            String a0 = cursor.getString(0) ;
+            String a1 = cursor.getString(1) ;
+            String a2 = "" ; // cursor.getString(2) ;
+
+
+            resultTextView.append(a0 + " - " + a1 + " - " + a2  + "\n");
+        }
+        cursor.close();
+    }
+
+
+
+
+
+
+}