Android---30---ProgressBar进度条的使用

activity_main.xml：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical"    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="com.example.progressbardemo.MainActivity" >    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="小圆形进度条" />    <ProgressBar        style="@android:attr/progressBarStyleSmallTitle"        android:layout_width="wrap_content"        android:layout_height="wrap_content" />    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="中型圆形进度条" />    <ProgressBar        android:layout_width="wrap_content"        android:layout_height="wrap_content" />    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="大型圆形进度条" />    <ProgressBar        style="@android:style/Widget.ProgressBar.Large"        android:layout_width="wrap_content"        android:layout_height="wrap_content" />    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="水平进度条" />    <ProgressBar        style="@android:style/Widget.ProgressBar.Horizontal"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:max="100"        android:progress="30" />    <ProgressBar        android:id="@+id/bar"        style="@android:style/Widget.ProgressBar.Horizontal"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:layout_marginTop="20dp"        android:max="100"        android:progress="30"        android:secondaryProgress="60" />    <LinearLayout        android:layout_width="fill_parent"        android:layout_height="fill_parent"        android:orientation="horizontal" >        <Button            android:id="@+id/button1"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_marginTop="20dp"            android:text="增加进度" />        <Button            android:id="@+id/button2"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_marginTop="20dp"            android:text="减少进度" />    </LinearLayout></LinearLayout>

MainA.java:

import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.View.OnClickListener;import android.view.Window;import android.widget.Button;import android.widget.ProgressBar;public class MainActivity extends Activity implements OnClickListener {private ProgressBar progressBar;private Button button, button2;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);// 如何设置窗口有刻度的效果requestWindowFeature(Window.FEATURE_PROGRESS);requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);setContentView(R.layout.activity_main);progressBar = (ProgressBar) findViewById(R.id.bar);setProgressBarVisibility(true);setProgressBarIndeterminate(true);setProgress(3500);button = (Button) findViewById(R.id.button1);button2 = (Button) findViewById(R.id.button2);button.setOnClickListener(this);button2.setOnClickListener(this);}@Overridepublic void onClick(View v) {// TODO Auto-generated method stubswitch (v.getId()) {case R.id.button1:progressBar.setProgress((int) (progressBar.getProgress() * 1.2));progressBar.setSecondaryProgress((int) (progressBar.getSecondaryProgress() * 1.2));break;case R.id.button2:progressBar.setProgress((int) (progressBar.getProgress() * 0.8));progressBar.setSecondaryProgress((int) (progressBar.getSecondaryProgress() * 0.8));break;default:break;}}}

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