Android Studio 【SeekBar】基本用法 - MilkeZhang 的网络笔记

基本用法其实很简单，常用的属性无非就下面这几个常用的属性，Java代码里只要setXxx即可：

android:max="100" //滑动条的最大值

android:progress="60" //滑动条的当前值

android:secondaryProgress="70" //二级滑动条的进度

android:thumb = "@mipmap/sb_icon" //滑块的drawable

接着要说下SeekBar的事件了，SeekBar.OnSeekBarChangeListener 我们只需重写三个对应的方法：

onProgressChanged：进度发生改变时会触发

onStartTrackingTouch：按住SeekBar时会触发

onStopTrackingTouch：放开SeekBar时触发

参考示例

public class MainActivity extends AppCompatActivity {

    private SeekBar sb_normal;
    private TextView txt_cur;
    private Context mContext;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mContext = MainActivity.this;
        bindViews();
    }

    private void bindViews() {
        sb_normal = (SeekBar) findViewById(R.id.sb_normal);
        txt_cur = (TextView) findViewById(R.id.txt_cur);
        sb_normal.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
            @Override
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
                txt_cur.setText("当前进度值:" + progress + "  / 100 ");
            }

            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {
                Toast.makeText(mContext, "触碰SeekBar", Toast.LENGTH_SHORT).show();
            }

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