Question

我对Android很新，目前正在开发一个测验应用程序，当用户使用该应用程序时我会发出声音。我的设置活动中有一个开关按钮，可以打开和关闭应用程序的声音。我已经实现了一些逻辑但它还没有工作。我已经筋疲力尽了，我需要一些帮助。

style.xml

 <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
        <item name="android:soundEffectsEnabled">true</item>
    </style>
    <style name="AppThemeMute" parent="Theme.AppCompat.Light.NoActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
        <item name="android:soundEffectsEnabled">false</item>
    </style>

MyApplication.java

public class MyApplication extends Application {

    private static int sTheme;

    public final static int THEME_SOUND_ON = 0;
    public final static int THEME_SOUND_OFF = 1;



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

    public static void changeToTheme(Context context, int theme) {
        sTheme = theme;

        switch (sTheme) {
            default:
            case THEME_SOUND_ON:
                context.setTheme(R.style.AppTheme);
                break;
            case THEME_SOUND_OFF:
                context.setTheme(R.style.AppThemeMute);
                break;
        }
    }
}

SettingsActivity.java

public class SettingsActivity extends AppCompatActivity {
    private Switch mSoundSwitch;
    private  Switch mAdsSwitch;
    SharedPreferences sharedPreferences;
    SharedPreferences.Editor editor;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_settings);
        // handling switch button
        mSoundSwitch = (Switch) findViewById(R.id.soundSwitch);
        mSoundSwitch.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked) {
    sharedPreferences =  getPreferences(Context.MODE_PRIVATE);
    editor = sharedPreferences.edit();
    editor.putBoolean("sound", true);
    editor.apply();
    // Change Whole App Theme
    MyApplication.changeToTheme(getApplicationContext(), MyApplication.THEME_SOUND_ON);
} else {
    sharedPreferences =  getPreferences(Context.MODE_PRIVATE);
    editor = sharedPreferences.edit();
    editor.putBoolean("sound", false);
    editor.apply();
    MyApplication.changeToTheme(getApplicationContext(), MyApplication.THEME_SOUND_OFF);
}
            }
        });

        sharedPreferences = getPreferences(Context.MODE_PRIVATE);
        boolean isChecked = sharedPreferences.getBoolean("sound", true);
        mSoundSwitch.setChecked(isChecked);

    }

}

现在，切换按钮与sharedPreferences完美配合。但是，切换按钮时声音不会静音。

Answer 1

private void mute() {
    //mute audio
    AudioManager amanager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
    amanager.setStreamMute(AudioManager.STREAM_NOTIFICATION, true);
}

public void unmute() {
    //unmute audio
    AudioManager amanager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
    amanager.setStreamMute(AudioManager.STREAM_NOTIFICATION, false);
}

这两个功能可以很好地处理音频mute和unmute。

您只需根据用户mute拨打/切换到unmute或preference。

关闭整个应用程序android的声音

1 个答案: