ANDROID_MARS学习笔记_S01_011ProgressBar

 <ProgressBar

         android:layout_width="wrap_content"

         android:layout_height="wrap_content"

         style="@android:style/Widget.ProgressBar.Small"

         android:layout_marginRight="5dp" />

<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" >

    <ProgressBar

        android:id="@+id/firstProgressBar"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        style="?android:attr/progressBarStyleHorizontal" />

    <Button

        android:id="@+id/firstButton"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:layout_below="@id/firstProgressBar"

        android:text="增加第一进度"/>

    <Button

        android: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>

 package com.marschen.s01_e17_progressbar;

 import android.app.Activity;

 import android.os.Bundle;

 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;

     @Override

     protected void onCreate(Bundle savedInstanceState) {

         super.onCreate(savedInstanceState);

         setContentView(R.layout.activity_main);

         progressBar = (ProgressBar)findViewById(R.id.firstProgressBar);

         firstButton = (Button)findViewById(R.id.firstButton);

         secondButton = (Button)findViewById(R.id.secondButton);

         progressBar.setMax(100);

         firstButton.setOnClickListener(new FirstListener());

         secondButton.setOnClickListener(new SecondListener());

     }

     class FirstListener implements OnClickListener{

         @Override

         public void onClick(View v) {

             progressBar.incrementProgressBy(10);

         }

     }

     class SecondListener implements OnClickListener{

         @Override

         public void onClick(View v) {

             progressBar.incrementSecondaryProgressBy(20);

         }

     }

     @Override

     public 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;

     }

 }