拖拽进度条（SeekBar）

拖拽进度条（SeekBar）

监听方法：setOnSeekBarChangeListener

监听器：SeekBar.OnSeekBarChangeListener

简单，直接上代码：

1.Activity

//拖拽进度条

public class SeekBarActivity extends Activity {

    private Context context;

    private SeekBar seekBar;

    private TextView textView;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.seek_bar);

        context = this;

        seekBar = (SeekBar)findViewById(R.id.seekBarId);

        textView = (TextView)findViewById(R.id.textViewId);

        seekBar.setMax(100);

        seekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {

            //停止触摸

            public void onStopTrackingTouch(SeekBar seekBar) {

                int progress = seekBar.getProgress();

                Toast.makeText(context, "停止触摸", Toast.LENGTH_SHORT).show();

            }

            //开始触摸

            public void onStartTrackingTouch(SeekBar seekBar) {

                Toast.makeText(context, "开始触摸", Toast.LENGTH_SHORT).show();

            }

            //拖动过程中

            public void onProgressChanged(SeekBar seekBar, int progress,

                    boolean fromUser) {

                textView.setText(progress+"/"+seekBar.getMax());

            }

        });

    }

}

2.xml布局文件

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:padding="5dp" >

<!-- 拖拽进度条 -->

    <SeekBar

        android:id="@+id/seekBarId"

        android:layout_width="match_parent"

        android:layout_height="wrap_content" />

    <TextView

        android:id="@+id/textViewId"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_below="@id/seekBarId"

        android:layout_alignParentRight="true"

        android:text="0%" />

</RelativeLayout>

3.效果显示图