蜗牛—Android基础之ProgressBar

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Java代码如下

package com.wjj.progewssbar;import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ProgressBar;public class MainActivity extends Activity {private ProgressBar progressBar;private Button firstButton;private Button secondButton;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);firstButton = (Button) findViewById(R.id.firstButton);   firstButton = (Button) findViewById(R.id.secondButton);progressBar = (ProgressBar) findViewById(R.id.firstProgressBar);progressBar.setMax(100);  //设置进度条最大值progressBar.setProgress(30);  //设置默认进度的值progressBar.setSecondaryProgress(50); //设置第二进度的默认值boolean flag = progressBar.isIndeterminate(); // 水平返回false，不是水平风格，转圈的bar返回trueprogressBar.incrementProgressBy(10);   //进度条增加10progressBar.incrementSecondaryProgressBy(10);  //第二进度条增加10 FirstListener firstListener = new FirstListener();SecondListener listener = new SecondListener();firstButton.setOnClickListener(firstListener);secondButton.setOnClickListener(listener);}class FirstListener implements OnClickListener {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubprogressBar.incrementProgressBy(10);}}class SecondListener implements OnClickListener {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubprogressBar.incrementSecondaryProgressBy(20);}}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}}

XML代码

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="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"tools:context=".MainActivity" ><ProgressBarandroid:id="@+id/firstProgressBar"style="?android:attr/progressBarStyleHorizontal"android:layout_width="match_parent"android:layout_height="wrap_content"android:max="200"android:progress="100"android:secondaryProgress="150" /><Buttonandroid:id="@+id/firstButton"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_below="@id/firstProgressBar"android:text="增加进度" /><Buttonandroid:id="@+id/secondButton"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_below="@id/firstButton"android:text="增加第二进度" /></RelativeLayout>

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