activity_mian.xml 部分

seek.xml

package?com.example.administrator.seekbar;

import?android.support.v7.app.ActionBarActivity;
import?android.os.Bundle;
import?android.view.Menu;
import?android.view.MenuItem;
import?android.widget.SeekBar;
import?android.widget.TextView;


public?class?MainActivity?extends?ActionBarActivity?{
????private?SeekBar?seekBar;
????private?TextView?text1;
????private?TextView?text2;

????@Override
????protected?void?onCreate(Bundle?savedInstanceState)?{
????????super.onCreate(savedInstanceState);
????????setContentView(R.layout.activity_main);

????????seekBar?=?(SeekBar)findViewById(R.id.seekBar);
????????text1?=?(TextView)findViewById(R.id.text1);
????????text2?=?(TextView)findViewById(R.id.text2);

????????seekBar.setOnSeekBarChangeListener(new?SeekBar.OnSeekBarChangeListener()?{
????????????@Override
????????????public?void?onProgressChanged(SeekBar?seekBar,?int?progress,?boolean?fromUser)?{
????????????????text1.setText("正在拖動(dòng)");
????????????????text2.setText("當(dāng)前數(shù)值："+progress);
????????????}

????????????@Override
????????????public?void?onStartTrackingTouch(SeekBar?seekBar)?{
????????????????text1.setText("開始拖動(dòng)");
????????????}

????????????@Override
????????????public?void?onStopTrackingTouch(SeekBar?seekBar)?{
????????????????text1.setText("停止拖動(dòng)");
????????????}
????????});
????}
}