使用ProgressBar实现进度条

2019-11-09 15:06:19

字体：大中小

来源：转载

供稿：网友

这里写图片描述

MainActivity.java

package com.imooc.android_PRogressbar;import android.app.Activity;import android.app.ActionBar;import android.app.Fragment;import android.app.ProgressDialog;import android.content.DialogInterface;import android.os.Bundle;import android.view.LayoutInflater;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup;import android.view.Window;import android.widget.Button;import android.widget.ProgressBar;import android.widget.TextView;import android.widget.Toast;import android.os.Build;public class MainActivity extends Activity implements OnClickListener { private ProgressBar progress; private Button add; private Button reduce; private Button reset; private TextView text; private ProgressDialog prodialog; private Button show; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // 启用窗口特征，启用带进度和不带进度的进度条 requestWindowFeature(Window.FEATURE_PROGRESS); requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS); setContentView(R.layout.main); // 显示两种进度条 setProgressBarVisibility(true); setProgressBarIndeterminateVisibility(false); // Max=10000 setProgress(9999); init(); } private void init() { // TODO Auto-generated method stub progress = (ProgressBar) findViewById(R.id.horiz); add = (Button) findViewById(R.id.add); reduce = (Button) findViewById(R.id.reduce); reset = (Button) findViewById(R.id.reset); text = (TextView) findViewById(R.id.text); show=(Button) findViewById(R.id.show); show.setOnClickListener(this); // 获取第一进度条的进度 int first = progress.getProgress(); // 获取第二进度条的进度 int second = progress.getSecondaryProgress(); // 获取进度条的最大进度 int max = progress.getMax(); text.setText("第一进度百分比：" + (int) (first / (float) max * 100) + "% 第二进度百分比：" + (int) (second / (float) max * 100) + "%"); add.setOnClickListener(this); reduce.setOnClickListener(this); reset.setOnClickListener(this); } @Override public void onClick(View v) { // TODO Auto-generated method stub switch (v.getId()) { case R.id.add: { // 增加第一进度和第二进度10个刻度 progress.incrementProgressBy(10); progress.incrementSecondaryProgressBy(10); break; } case R.id.reduce: { // 减少第一进度和第二进度10个刻度 progress.incrementProgressBy(-10); progress.incrementSecondaryProgressBy(-10); break; } case R.id.reset: { progress.setProgress(50); progress.setSecondaryProgress(80); break; } case R.id.show: { /** * 页面显示风格 */ //新建ProgressDialog对象 prodialog=new ProgressDialog(MainActivity.this); //设置显示风格 prodialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); //设置标题 prodialog.setTitle("幕课网"); //设置对话框里的文字信息 prodialog.setMessage("欢迎大家支持幕课网"); //设置图标 prodialog.setIcon(R.drawable.ic_launcher); /** * 设定关于ProgressBar的一些属性 */ //设定最大进度 prodialog.setMax(100); //设定初始化已经增长到的进度 prodialog.incrementProgressBy(50); //进度条是明确显示进度的 prodialog.setIndeterminate(false); /** * 设定一个确定按钮 */ prodialog.setButton(DialogInterface.BUTTON_POSITIVE, "确定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // TODO Auto-generated method stub Toast.makeText(MainActivity.this, "欢迎大家支持幕课网", Toast.LENGTH_SHORT).show(); } }); //是否可以通过返回按钮退出对话框 prodialog.setCancelable(true); //显示ProgressDialog prodialog.show(); break; } } text.setText("第一进度百分比："+ (int) (progress.getProgress() / (float) progress.getMax() * 100)+ "% 第二进度百分比："+ (int) (progress.getSecondaryProgress()/ (float) progress.getMax() * 100) + "%"); }}

xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <ProgressBar android:id="@+id/progressBar1" style="?android:attr/progressBarStyleLarge" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <ProgressBar android:id="@+id/progressBar2" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <ProgressBar android:id="@+id/progressBar3" style="?android:attr/progressBarStyleSmall" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <ProgressBar android:id="@+id/horiz" style="@android:style/Widget.ProgressBar.Horizontal" android:progressDrawable="@drawable/progress_bar" android:layout_width="match_parent" android:layout_height="wrap_content" android:max="100" android:progress="50" android:secondaryProgress="80" /> <Button android:id="@+id/add" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/add" /> <Button android:id="@+id/reduce" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/reduce" /> <Button android:id="@+id/reset" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/reset" /> <TextView android:id="@+id/text" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <Button android:id="@+id/show" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/show" /></LinearLayout>

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