Initial commit for an app to generate simple vibrations using an Andr…

…oid phone.

.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
+local.properties

app/.gitignore

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+/build

app/build.gradle

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+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdkVersion 29
+    buildToolsVersion "30.0.2"
+
+    defaultConfig {
+        applicationId "zhengzhu.vibecheck"
+        minSdkVersion 28
+        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'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.1.0'
+    implementation 'com.google.android.material:material:1.1.0'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    implementation 'androidx.navigation:navigation-fragment:2.2.2'
+    implementation 'androidx.navigation:navigation-ui:2.2.2'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+}

app/proguard-rules.pro

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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

app/src/androidTest/java/zhengzhu/vibecheck/ExampleInstrumentedTest.java

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+package zhengzhu.vibecheck;
+
+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("zhengzhu.vibecheck", appContext.getPackageName());
+    }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="zhengzhu.vibecheck">
+
+    <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/Theme.VibeCheck">
+        <activity
+            android:name=".MainActivity"
+            android:label="@string/app_name"
+            android:theme="@style/Theme.VibeCheck.NoActionBar">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+    <uses-permission android:name="android.permission.VIBRATE"/>
+
+</manifest>

app/src/main/java/zhengzhu/vibecheck/FirstFragment.java

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+package zhengzhu.vibecheck;
+
+import android.content.Context;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.VibrationEffect;
+import android.os.Vibrator;
+import android.util.Log;
+import android.view.Gravity;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.EditText;
+import android.widget.Toast;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.RequiresApi;
+import androidx.fragment.app.Fragment;
+
+import java.util.Locale;
+
+public class FirstFragment extends Fragment {
+
+    private static final int MAX_VIBRATION_DURATION_MS = 2000;
+    private static final String DURATION_ERROR_MESSAGE = String.format(Locale.ENGLISH,"Duration must be an integer between 1 and %d.", MAX_VIBRATION_DURATION_MS);
+    private static final String AMPLITUDE_ERROR_MESSAGE = "Amplitude must be an integer between 0 and 255 or left empty.";
+
+    Vibrator vibrator;
+
+    @Override
+    public View onCreateView(
+            LayoutInflater inflater, ViewGroup container,
+            Bundle savedInstanceState
+    ) {
+        vibrator = (Vibrator) this.getContext().getSystemService(Context.VIBRATOR_SERVICE);
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment_first, container, false);
+    }
+
+    public void onViewCreated(@NonNull View view, Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+
+        view.findViewById(R.id.vibrate_button).setOnClickListener(new View.OnClickListener() {
+            @RequiresApi(api = Build.VERSION_CODES.Q)
+            @Override
+            public void onClick(View buttonView) {
+                boolean hasAmplitudeControls = vibrator.hasAmplitudeControl();
+
+                EditText durationText = (EditText) view.findViewById(R.id.duration_ms);
+                Integer durationMs;
+                try {
+                    durationMs = Integer.parseInt(durationText.getText().toString());
+                } catch (NumberFormatException e) {
+                    showDebugToast(DURATION_ERROR_MESSAGE);
+                    return;
+                }
+
+                EditText amplitudeText = (EditText) view.findViewById(R.id.amplitude);
+                boolean amplitudeIsEmpty = amplitudeText.getText().toString().isEmpty();
+                Integer amplitude = -1;
+                try {
+                    amplitude = Integer.parseInt(amplitudeText.getText().toString());
+                } catch (NumberFormatException e) {
+                    if (!amplitudeIsEmpty) {
+                        showDebugToast(AMPLITUDE_ERROR_MESSAGE);
+                        return;
+                    }
+                }
+
+                if (hasAmplitudeControls && (amplitude < -1 || amplitude > 255)) {
+                    showDebugToast(AMPLITUDE_ERROR_MESSAGE);
+                    return;
+                }
+
+                if (durationMs < 1 || durationMs > MAX_VIBRATION_DURATION_MS) {
+                    showDebugToast(DURATION_ERROR_MESSAGE);
+                    return;
+                }
+
+                String vibeMessage;
+                if (amplitudeIsEmpty) {
+                    vibeMessage = String.format(Locale.ENGLISH, "Amplitude is empty. Vibrating at default amplitude for %d ms.", durationMs);
+                } else if (!hasAmplitudeControls) {
+                    vibeMessage = String.format(Locale.ENGLISH, "This device doesn't support amplitude controls. Vibrating at default amplitude for %d ms.", durationMs);
+                } else {
+                    vibeMessage = String.format(Locale.ENGLISH, "Vibrating at amplitude %d for %d ms.", amplitude, durationMs);
+                }
+
+                Log.i("VibeCheck", vibeMessage);
+                showDebugToast(vibeMessage);
+
+                vibrator.vibrate(VibrationEffect.createOneShot(durationMs, amplitude));
+            }
+        });
+    }
+
+    private void showDebugToast(String message) {
+        Toast toast = Toast.makeText(getContext(), message, Toast.LENGTH_SHORT);
+        toast.setGravity(Gravity.CENTER, 0, 0);
+        toast.show();
+    }
+}

app/src/main/java/zhengzhu/vibecheck/MainActivity.java

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+package zhengzhu.vibecheck;
+
+import android.os.Bundle;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.Toolbar;
+
+import android.view.Menu;
+import android.view.MenuItem;
+
+public class MainActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+        Toolbar toolbar = findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        // Inflate the menu; this adds items to the action bar if it is present.
+        getMenuInflater().inflate(R.menu.menu_main, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        // Handle action bar item clicks here. The action bar will
+        // automatically handle clicks on the Home/Up button, so long
+        // as you specify a parent activity in AndroidManifest.xml.
+        int id = item.getItemId();
+
+        //noinspection SimplifiableIfStatement
+        if (id == R.id.action_settings) {
+            return true;
+        }
+
+        return super.onOptionsItemSelected(item);
+    }
+}

app/src/main/res/drawable-v24/ic_launcher_foreground.xml

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+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>