Android读取SeekBar数值方法

public class MainActivity extends AppCompatActivity {    private SeekBar seekbar=null;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);        setSupportActionBar(toolbar);        seekbar = (SeekBar) findViewById(R.id.seekbar_01);        seekbar.setMax(100);        seekbar.setProgress(30);        seekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {            @Override            public void onProgressChanged(SeekBar seekbar, int progress, boolean fromUser) {                Log.v("拖动过程中的值：", String.valueOf(progress) + ", " + String.valueOf(fromUser));            }            @Override            public void onStartTrackingTouch(SeekBar seekbar) {                Log.v("开始滑动时的值：", String.valueOf(seekbar.getProgress()));            }            @Override            public void onStopTrackingTouch(SeekBar seekbar) {                Log.v("停止滑动时的值：", String.valueOf(seekbar.getProgress()));            }        });
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