Android基础控件SeekBar拖动条的使用

        <!--<SeekBar-->
            <!--android:layout_width="match_parent"-->
            <!--android:layout_height="wrap_content"-->
            <!--android:max="100"-->
            <!--android:progress="30"-->
            <!--android:id="@+id/seekbar"-->
            <!--android:thumb="@mipmap/ic_launcher_round"/>-->//设置滑块的

        seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
            @Override//进度发生改变
            public void onProgressChanged(SeekBar seekBar, int i, boolean b) {
            }

            @Override//按下
            public void onStartTrackingTouch(SeekBar seekBar) {
            }

            @Override//放开
            public void onStopTrackingTouch(SeekBar seekBar) {
            }
        });

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true"
        android:drawable="@drawable/seekbar_thumb_pressed" />

    <item android:state_pressed="false"
        android:drawable="@drawable/seekbar_thumb_normal"/>
</selector>

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:id="@android:id/background">
        <shape>
            <solid android:color="#FFFFD042" />
        </shape>
    </item>
    <item android:id="@android:id/secondaryProgress">
        <clip>
            <shape>
                <solid android:color="#f23f21" />
            </shape>
        </clip>
    </item>
    <item android:id="@android:id/progress">
        <clip>
            <shape>
                <solid android:color="#FF96E85D" />
            </shape>
        </clip>
    </item>

</layer-list>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".LoginActivity">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="当前进度值：30"
            android:id="@+id/textview"/>
        <SeekBar
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/seekbar"
            android:progress="30"
            android:secondaryProgress="50"
            android:maxHeight="5dp"
            android:minHeight="5dp"
            android:progressDrawable="@drawable/sb_bar"
            android:thumb="@drawable/sb_thumb"/>

</LinearLayout>

public class LoginActivity extends AppCompatActivity  {


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
        // Set up the login form.

        SeekBar seekBar = (SeekBar)findViewById(R.id.seekbar);
        final TextView textView = (TextView)findViewById(R.id.textview);
        seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
            @Override//进度发生改变
            public void onProgressChanged(SeekBar seekBar, int i, boolean b) {
                textView.setText("当前进度值："+i);
            }

            @Override//按下
            public void onStartTrackingTouch(SeekBar seekBar) {
                Toast.makeText(LoginActivity.this,"按下",Toast.LENGTH_SHORT).show();
            }

            @Override//放开
            public void onStopTrackingTouch(SeekBar seekBar) {
                Toast.makeText(LoginActivity.this,"放开",Toast.LENGTH_SHORT).show();
            }
        });

    }

}