1.SeekBar 是一个可以拖动的控件
需要实现
seekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
Log.i(TAG,"onProgressChanged=" +progress);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
Log.i(TAG,"onStartTrackingTouch=");
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
Log.i(TAG,"onStopTrackingTouch=");
}
});
2.
//拖动条进度改变的时候调用
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
Log.i(TAG,"onProgressChanged=" +progress);
}
//拖动条开始拖动的时候调用
@Override public void onStartTrackingTouch(SeekBar seekBar) {
Log.i(TAG,"onStartTrackingTouch=");
}
//拖动条停止拖动的时候调用
@Override public void onStopTrackingTouch(SeekBar seekBar) {
Log.i(TAG,"onStopTrackingTouch=");
}
3.例:SeekBar seekbar= (SeekBar) findViewById(R.id.seekBar);//拿到控件实例
seekbar.setMax(100);//为控件设置大小
4.当seekbar
拖动的时候 log cat 日志
05-26 14:35:24.203 2242-2242/? I/MainActivity: onStartTrackingTouch=
05-26 14:35:24.203 2242-2242/? I/MainActivity: onProgressChanged=2
05-26 14:35:24.273 2242-2242/? I/MainActivity: onStopTrackingTouch=
05-26 14:38:35.910 2242-2242/? I/MainActivity: onStartTrackingTouch=
05-26 14:38:35.910 2242-2242/? I/MainActivity: onProgressChanged=3
05-26 14:38:35.990 2242-2242/? I/MainActivity: onStopTrackingTouch=
05-26 14:38:36.960 2242-2242/? I/MainActivity: onStartTrackingTouch=
05-26 14:38:36.960 2242-2242/? I/MainActivity: onProgressChanged=9
05-26 14:38:37.050 2242-2242/? I/MainActivity: onStopTrackingTouch=
05-26 14:38:37.850 2242-2242/? I/MainActivity: onStartTrackingTouch=
05-26 14:38:37.850 2242-2242/? I/MainActivity: onProgressChanged=11
05-26 14:38:37.930 2242-2242/? I/MainActivity: onStopTrackingTouch=