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我目前正在制作一个带有 SeekBar 的应用程序，其中 SeekBar 控制音乐音量、铃声音量和闹钟音量。它工作正常，但每当我尝试在按钮中编写代码以将手机设置为振动时，它要么使应用程序崩溃，要么只是破坏代码，因此 SeekBar 永远不会改变音量。任何有关如何实现将手机设置为振动的按钮的帮助将不胜感激。谢谢。

   import android.app.*;
import android.os.*;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.ToggleButton;
import android.content.Context;
import android.content.DialogInterface;
import android.media.AudioManager;
import android.widget.SeekBar.OnSeekBarChangeListener;

public class MainActivity extends Activity
{

    /** Called when the activity is first created. */

    private SeekBar Volume = null;
    private AudioManager audioManager = null;
    private TextView volumeValue;
    private Vibrator sVibrate;
    private ToggleButton vibrateButton;
    final private String volumeIs = "Current Volume: ";

    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setVolumeControlStream(AudioManager.STREAM_MUSIC);
        setContentView(R.layout.main);

        allVolumes();
    }

    private void allVolumes()
    {
        try
        {
            Volume = (SeekBar) findViewById(R.id.Volume);
            audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
            Volume.setMax(audioManager
                    .getStreamMaxVolume(AudioManager.STREAM_MUSIC));
            Volume.setProgress(audioManager
                    .getStreamVolume(AudioManager.STREAM_MUSIC));

            sVibrate = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
            vibrateButton = (ToggleButton) findViewById(R.id.vibrateButton);

            volumeValue = (TextView) findViewById(R.id.volumeValue);
            volumeValue.setText(volumeIs
                    + Integer.toString(audioManager
                            .getStreamVolume(AudioManager.STREAM_MUSIC)));

            Volume.setOnSeekBarChangeListener(new OnSeekBarChangeListener()
            {
                @Override
                public void onStopTrackingTouch(SeekBar arg0)
                {

                }

                @Override
                public void onStartTrackingTouch(SeekBar arg0)
                {

                }

                @Override
                public void onProgressChanged(SeekBar arg0, int progress,
                        boolean arg2)
                {
                    audioManager.setStreamVolume(AudioManager.STREAM_MUSIC,
                            progress, 0);
                    audioManager.setStreamVolume(AudioManager.STREAM_RING,
                            progress, 0);
                    audioManager.setStreamVolume(AudioManager.STREAM_ALARM,
                            progress, 0);

                    volumeValue.setText(volumeIs
                            + Integer.toString(audioManager
                                    .getStreamVolume(AudioManager.STREAM_MUSIC)));
                }
            });
        }
        catch (Exception e)
        {
            e.printStackTrace();

            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setCancelable(true);
            builder.setTitle(R.string.catch_error);
            builder.setInverseBackgroundForced(true);
            builder.setPositiveButton("Quit",
                    new DialogInterface.OnClickListener()
                    {
                        @Override
                        public void onClick(DialogInterface dialog, int which)
                        {
                            dialog.dismiss();
                            finish();
                        }
                    });
            builder.setNegativeButton("Ignore",
                    new DialogInterface.OnClickListener()
                    {
                        @Override
                        public void onClick(DialogInterface dialog, int which)
                        {
                            dialog.dismiss();
                            Toast.makeText(
                                    MainActivity.this,
                                    "This app will not work right unless you restart.",
                                    Toast.LENGTH_LONG).show();
                        }
                    });
            AlertDialog alert = builder.create();
            alert.show();

        }
    }
}
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1 回答 1

1

任何有关如何实现将手机设置为振动的按钮的帮助将不胜感激。

你的意思是，将手机切换到振动模式？试试这个：

(AudioManager) getSystemService(AUDIO_SERVICE)).setRingerMode(AudioManager.RINGER_MODE_VIBRATE);
于 2013-03-01T17:21:41.803 回答