ThreeGames/app/src/main/java/com/jyc/threegames/activity/AlertActivity.java

package com.jyc.threegames.activity;

import android.app.Activity;
import android.app.KeyguardManager;
import android.content.Context;
import android.content.Intent;
import android.media.AudioManager;
import android.media.Ringtone;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.PersistableBundle;
import android.util.Log;
import android.view.WindowManager;
import android.widget.TextView;

import androidx.annotation.NonNull;

import com.jyc.threegames.App;
import com.jyc.threegames.R;
import com.jyc.threegames.activity.base.BaseActivity;

import butterknife.BindView;
import butterknife.OnClick;

public class AlertActivity extends BaseActivity {
    public static final String PARAM_TEXT = "text";

    @BindView(R.id.label)
    TextView mTVLabel;

    private String mText;

    private int mCurrentVolume = 0;
    private Ringtone mRingTone;

    @Override
    protected void init(Bundle instance) {
        super.init(instance);
        if (instance == null)
            mText = getIntent().getStringExtra(PARAM_TEXT);
        else
            mText = instance.getString(PARAM_TEXT);

        mTVLabel.setText(mText);


        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1)
            setTurnScreenOn(true);
        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            KeyguardManager keyguardManager = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);
            keyguardManager.requestDismissKeyguard(this, null);
        }

        maxVolume();
        playRing();

        App.CAN_PLAY_GAME = false;
    }

    @Override
    protected void onDestroy() {
        App.CAN_PLAY_GAME = true;
        stopPlay();
        restoreVolume();
        super.onDestroy();
    }

    @Override
    protected void onRestoreInstanceState(@NonNull Bundle savedInstanceState) {
        super.onRestoreInstanceState(savedInstanceState);
        mText = savedInstanceState.getString(PARAM_TEXT);
    }

    @Override
    protected void onSaveInstanceState(@NonNull Bundle outState) {
        super.onSaveInstanceState(outState);
        outState.putString(PARAM_TEXT, mText);
    }

    @Override
    protected int getRootLayout() {
        return R.layout.activity_alert;
    }

    @OnClick(R.id.sure)
    public void clickSure(){
        finish();
    }

    private void playRing(){
        try {
            Uri notification = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM);
            mRingTone = RingtoneManager.getRingtone(this, notification);
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P)
                mRingTone.setLooping(true);
            mRingTone.play();
        } catch (Exception e) {
            e.printStackTrace();
            Log.e("three_games", "播放鈴聲失敗");
        }
    }

    private void maxVolume(){
        mCurrentVolume = getAudioManager().getStreamVolume(AudioManager.STREAM_ALARM);
        getAudioManager().setStreamVolume(AudioManager.STREAM_ALARM, getAudioManager().getStreamMaxVolume(AudioManager.STREAM_ALARM), 0);
    }

    private void restoreVolume(){
        getAudioManager().setStreamVolume(AudioManager.STREAM_ALARM, mCurrentVolume, 0);
    }

    private AudioManager getAudioManager(){
        return (AudioManager) getSystemService(Context.AUDIO_SERVICE);
    }

    private void stopPlay(){
        if (mRingTone != null && mRingTone.isPlaying()){
            mRingTone.stop();
        }
    }

    public static void LAUNCH(Context activity, String text){
        Intent intent = new Intent(activity, AlertActivity.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        intent.putExtra(PARAM_TEXT, text);
        activity.startActivity(intent);
    }
}