MainActivity。java文件代码
包com.example.android_pickers2;
进口android.app.Activity;
进口android.os.AsyncTask;
进口android.os.Bundle;
进口android.view.Menu;
进口android.view.View;
进口android.view.View.OnClickListener;
进口android.widget.Button;
进口android.widget.ProgressBar;
进口android.widget.RatingBar;
进口android.widget.RatingBar.OnRatingBarChangeListener;
进口android.widget.SeekBar;
进口android.widget.SeekBar.OnSeekBarChangeListener;
进口android.widget.Toast;
公开课MainActivity延伸活动{
按钮按钮;
ProgressBar酒吧;
SeekBar SeekBar;
RatingBar RatingBar;
@Override
保护空白> & lt; RelativeLayout xmlns: android=" http://schemas.android.com/apk/res/android "
xmlns:工具=" http://schemas.android.com/tools "
android: layout_width=" match_parent "
android: layout_height=" match_parent "
android: paddingBottom=" @dimen/activity_vertical_margin”
android: paddingLeft=" @dimen/activity_horizontal_margin”
android: paddingRight=" @dimen/activity_horizontal_margin”
android: paddingTop=" @dimen/activity_vertical_margin”
工具:上下文="。祝辞MainActivity”;
& lt;按钮
android: id=癅 + id/button1”
android: layout_width=" wrap_content "
android: layout_height=" wrap_content "
android: layout_alignParentBottom=" true "
android: layout_centerHorizontal=" true "
android: layout_marginBottom=" 71 dp”
android:文本="下载图片”/比;
& lt; ProgressBar
android: id=癅 + id/progressBar1”
android: layout_width=" wrap_content "
android: layout_height=" wrap_content "
android: layout_alignParentLeft=" true "
android: layout_alignParentRight=" true "/比;
& lt; SeekBar
android: id=癅 + id/seekBar1”
android: layout_width=" match_parent "
android: layout_height=" wrap_content "
android: layout_alignParentLeft=" true "
android: layout_below=癅 + id/progressBar1”
android: layout_marginTop=?8 dp/比;
& lt; RatingBar
android: id=癅 + id/ratingBar1”
android: layout_width=" wrap_content "
android: layout_height=" wrap_content "
android: layout_alignParentLeft=" true "
android: layout_below=癅 + id/seekBar1”
android: layout_marginTop=" 30 dp/比;
& lt;/RelativeLayout>
