Question

我正在开发通话录音应用程序。我设法在ListView中显示音频文件，并能够在MediaPlayer中播放。知道我在SeekBar Handler中遇到了问题。当我播放音频文件时，MediaPlayer和SeekBar工作正常，但当我关闭我的应用程序时，SeekBar的Handler仍然有效。我怎么能阻止处理程序。

private void playSong(String string)
                throws IllegalArgumentException, SecurityException,
                IllegalStateException, IOException {

            // seekBar
            setContentView(R.layout.dialog_activity);
            startButton = (Button) findViewById(R.id.play_button);
            stopButton = (Button) findViewById(R.id.pause_button);
            seekBar = (SeekBar) findViewById(R.id.seek_bar);
            startButton.setOnClickListener(MainActivity.this);
            stopButton.setOnClickListener(MainActivity.this);

            // MediaPlayer
            mp.reset();
            mp.setAudioStreamType(AudioManager.STREAM_MUSIC);
            mp.setDataSource(string);
            mp.prepare();
            mp.start();
            seekBar.setMax(mp.getDuration());

            try {
                seekUpdation();
            } catch (Exception e) {
                Toast.makeText(MainActivity.this,
                        "SeekUpdation " + e.toString(), Toast.LENGTH_SHORT)
                        .show();
            }

        }

        Runnable run = new Runnable() {
            @Override
            public void run() {
                try {
                    seekUpdation();
                } catch (Exception e) {
                    Log.d("Runnable ", "error in Runnable =" + e.toString());
                }
            }
        };

这是处理程序在关闭应用程序后保持活动状态。

        public void seekUpdation() {

            seekBar.setProgress(mp.getCurrentPosition());
            seekHandler.postDelayed(run, 1000);

            Toast.makeText(MainActivity.this, "Uploaded" + seekHandler,
                    Toast.LENGTH_SHORT).show();
        }

    });
}

Answer 1

我自己找到了答案。

我们必须从此

更改代码

 Runnable run = new Runnable() {
        @Override
        public void run() {
            try {
                seekUpdation();
            } catch (Exception e) {
                Log.d("Runnable ", "error in Runnable =" + e.toString());
            }
        }
    };

    public void seekUpdation() {

        seekBar.setProgress(mp.getCurrentPosition());
        seekHandler.postDelayed(run, 1000);

        Toast.makeText(MainActivity.this, "Uploaded" + seekHandler,
                Toast.LENGTH_SHORT).show();
    }

});
}

到这个

Runnable run = new Runnable() {

                  public void run() {
                     seekBar.setProgress(mp.getCurrentPosition());
                     seekHandler.postDelayed(this, 1000);
                  }
               };

        private void seekUpdation() {

            seekBar.setProgress(mp.getCurrentPosition());
            seekHandler.postDelayed(run, 1000);

            Toast.makeText(MainActivity.this, "Uploaded" + seekHandler,
                    Toast.LENGTH_SHORT).show();
        }

如何处理SeekBar中的处理程序

1 个答案: