ProgressBar//进度条
- 默认是圆形的进度条
- ProgressBar
- void setProgress(int Progress):设置当前进度
- int getProgress():得到当前进度
- void setMax(int max):设置最大进度
- int getMax():设置或得到最大进度
- View
- void setVisibility(int visibility):设置视图的可见性
- View.VISIBLE:标识可见
- View.INVISIBLE:标识不可见,但占屏幕空间
- View.GONE:表示不可见,也不占屏幕空间
SeekBar:可手动滑动的进度条:
- setOnSeekBarChangeListener(OnSeekBarChangeListenter l):设置改变的监听
- OnseekBarChangeListener:
- onProgressChanged(SeekBar seekBar,int progress,boolean fromUser):改变进度
- onStartTrackingTouth():按下滑杆
- onStopTrackingTouth(SeekBar seekBar):从滑杆离开
xml代码:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:gravity="center"
android:id="@+id/ll_progress">
<ProgressBar
style="?android:attr/progressBarStyle"
android:layout_width="100dp"
android:layout_height="wrap_content" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="正在加载中...."/>
</LinearLayout>
<ProgressBar
android:layout_width="match_parent"
android:layout_height="wrap_content"
style="?android:progressBarStyleHorizontal"
android:progress="30"
android:id="@+id/pb_progress"/>
<SeekBar
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/sb_progress"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="功能需求:\n1,滑动下面的滑杆后,上面的进度条会同步\n2,滑动到最大值后,最上面的进度条会消失"/>
</LinearLayout>
java代码:
public class MainActivity extends AppCompatActivity {
private LinearLayout ll_progress;
private ProgressBar pb_proress;
private SeekBar sb_progress;
private boolean ptf;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ll_progress = (LinearLayout) findViewById(R.id.ll_progress);
pb_proress = (ProgressBar) findViewById(R.id.pb_progress);
sb_progress = (SeekBar) findViewById(R.id.sb_progress);
sb_progress.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
//改变进度
Log.e("TAG","改变进度");
//得到seekBar进度
int len=seekBar.getProgress();
//设置为ProgressBar进度
pb_proress.setProgress(len);
if(len==100){
ll_progress.setVisibility(View.GONE);
ptf=false;
}else{
if(ptf==false){
ptf=true;
ll_progress.setVisibility(View.VISIBLE);
}
}
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
//按下滑杆
Log.e("TAG","按下滑杆");
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
//离开滑杆
Log.e("TAG","离开滑杆");
}
});
}
}
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