Android Snippets

AndroidEmailIntent.java

String toEmail = "";
String subject = "Autofill subject";
String description = "Autofill body";
String emailChooserHeading = "Email via...";

Intent intent = new Intent(Intent.ACTION_SENDTO);
intent.setData(Uri.parse("mailto:"));
intent.putExtra(Intent.EXTRA_EMAIL  , new String[] { toEmail });
intent.putExtra(Intent.EXTRA_SUBJECT, subject);
intent.putExtra(Intent.EXTRA_TEXT, description);
startActivity(Intent.createChooser(intent, emailChooserHeading));

KillingAppAfterXSeconds.java

package com.proyuga.testQRScanner;

import com.unity3d.player.*;

import android.app.Activity;
import android.arch.lifecycle.Lifecycle;
import android.arch.lifecycle.LifecycleObserver;
import android.arch.lifecycle.OnLifecycleEvent;
import android.arch.lifecycle.ProcessLifecycleOwner;
import android.content.Intent;
import android.content.res.Configuration;
import android.graphics.PixelFormat;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;

public class UnityPlayerActivity extends Activity implements LifecycleObserver {
    protected UnityPlayer mUnityPlayer; // don't change the name of this variable; referenced from native code

    // Global variables in UnityPlayerActivity activity
    private Handler handler = new Handler();
    private Runnable runnable;
    private int TIME_TO_KILL_APP = 5 * 60 * 1000; // 5 minuits in milli seconds


    Button okButton;

    // Setup activity layout
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        super.onCreate(savedInstanceState);

        mUnityPlayer = new UnityPlayer(this);
        setContentView(mUnityPlayer);
        mUnityPlayer.requestFocus();
        setupLifeCycleListener();
    }


    @Override
    public void onBackPressed() {
        super.onBackPressed();
    }

    @Override
    protected void onNewIntent(Intent intent) {
        // To support deep linking, we need to make sure that the client can get access to
        // the last sent intent. The clients access this through a JNI api that allows them
        // to get the intent set on launch. To update that after launch we have to manually
        // replace the intent with the one caught here.
        setIntent(intent);
    }

    private void setupLifeCycleListener() {
        ProcessLifecycleOwner.get().getLifecycle().addObserver(this);
    }

    @OnLifecycleEvent(Lifecycle.Event.ON_START)
    public void onMoveToForeground() {
        Log.d("OnLifecycleEvent", "onStart");
        // To remove handler if user comes to app with in TIME_TO_KILL_APP time
        if (runnable != null) {
            handler.removeCallbacks(runnable);
        }
    }

    @OnLifecycleEvent(Lifecycle.Event.ON_STOP)
    public void onStopMethod() {
        Log.d("OnLifecycleEvent", "onStop");
        runnable = new Runnable() {
            @Override
            public void run() {
                Log.d("UnityPlayerActivity", "Killing the app");
                finishAffinity();
            }
        };
        handler.postDelayed(runnable, TIME_TO_KILL_APP);
    }

    // Quit Unity
    @Override
    protected void onDestroy() {
        Log.d("SampleLifecycle", "onDestroy");
        if (runnable != null) {
            handler.removeCallbacks(runnable);
        }
        mUnityPlayer.quit();
        super.onDestroy();
    }

    // Pause Unity
    @Override
    protected void onPause() {
        super.onPause();
        mUnityPlayer.pause();
    }

    // Resume Unity
    @Override
    protected void onResume() {
        super.onResume();
        mUnityPlayer.resume();
    }

    @Override
    protected void onStart() {
        super.onStart();
        mUnityPlayer.start();
    }

    @Override
    protected void onStop() {
        super.onStop();
        mUnityPlayer.stop();
    }

    // Low Memory Unity
    @Override
    public void onLowMemory() {
        super.onLowMemory();
        mUnityPlayer.lowMemory();
    }

    // Trim Memory Unity
    @Override
    public void onTrimMemory(int level) {
        super.onTrimMemory(level);
        if (level == TRIM_MEMORY_RUNNING_CRITICAL) {
            mUnityPlayer.lowMemory();
        }
    }

    // This ensures the layout will be correct.
    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        mUnityPlayer.configurationChanged(newConfig);
    }

    // Notify Unity of the focus change.
    @Override
    public void onWindowFocusChanged(boolean hasFocus) {
        super.onWindowFocusChanged(hasFocus);
        mUnityPlayer.windowFocusChanged(hasFocus);
    }

    // For some reason the multiple keyevent type is not supported by the ndk.
    // Force event injection by overriding dispatchKeyEvent().
    @Override
    public boolean dispatchKeyEvent(KeyEvent event) {
        if (event.getAction() == KeyEvent.ACTION_MULTIPLE)
            return mUnityPlayer.injectEvent(event);
        return super.dispatchKeyEvent(event);
    }

    // Pass any events not handled by (unfocused) views straight to UnityPlayer
    @Override
    public boolean onKeyUp(int keyCode, KeyEvent event) {
        return mUnityPlayer.injectEvent(event);
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        return mUnityPlayer.injectEvent(event);
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        return mUnityPlayer.injectEvent(event);
    }

    /*API12*/
    public boolean onGenericMotionEvent(MotionEvent event) {
        return mUnityPlayer.injectEvent(event);
    }
}

NotificationIntent.java

Intent intent = new Intent();
intent.setAction("android.settings.APP_NOTIFICATION_SETTINGS");

//for Android 5-7
intent.putExtra("app_package", getPackageName());
intent.putExtra("app_uid", getApplicationInfo().uid);

// for Android O
intent.putExtra("android.provider.extra.APP_PACKAGE", getPackageName());

startActivity(intent);