android中进度条―基础篇
android progrssbar
进度条即计算机在处理文件时，实时的，以图片形式显示处理文件的速度，完成度，剩余未完成文件的大小，和可能需要处理时间，一般以水平或者是图形条状显示
类代码
package com.smart;
import android.app.Activity;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.Button;
import android.widget.ProgressBar;
public class Main extends Activity implements OnClickListener {
// 各位在导入包的时候，记住要导入import android.view.View.OnClickListener;
private ProgressBar progressbarHorizontal;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
setContentView(R.layout.main);
setProgressBarIndeterminateVisibility(true);
progressbarHorizontal = (ProgressBar) findViewById(R.id.progressBarHorizontal);
Button button1 = (Button) findViewById(R.id.button1);
Button button2 = (Button) findViewById(R.id.button2);
// 绑定器
button1.setOnClickListener(this);
button2.setOnClickListener(this);
}
@Override
public void onClick(View view) {
switch (view.getId()) {
// 处理“增加进度"按钮事件
case R.id.button1:
progressbarHorizontal.setProgress((int) (progressbarHorizontal
.getProgress() * 1.18));
progressbarHorizontal
.setSecondaryProgress((int) (progressbarHorizontal
.getSecondaryProgress() * 1.18));
break;
// 处理“减少进度"按钮事件
case R.id.button2:
progressbarHorizontal.setProgress((int) (progressbarHorizontal
.getProgress() * 0.88));
progressbarHorizontal
.setSecondaryProgress((int) (progressbarHorizontal
.getSecondaryProgress() * 0.88));
break;
}
}
}
main.xml
代码
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="SMART圆形进度条1"
/>
<ProgressBar
android:layout_width="wrap_content"
android:layout_height="wrap_content"
style="?android:attr/progressBarStyleSmallTitle"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="SMART圆形进度条2"
/>
<ProgressBar
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="SMART圆形进度条3"
/>
<ProgressBar
android:layout_width="wrap_content"
android:layout_height="wrap_content"
style="?android:attr/progressBarStyleLarge"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="SMART水平进度条4"
/>
<ProgressBar
android:layout_width="fill_parent"
android:layout_height="wrap_content"
style="?android:attr/progressBarStyleHorizontal"
android:max="100"
android:progress="30"
/>
<ProgressBar
android:id="@+id/progressBarHorizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
style="?android:attr/progressBarStyleHorizontal"
android:max="100"
android:progress="30"
android:secondaryProgress="60"
android:layout_marginTop="20dp"
/>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:text="进度增加"
/>
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:text="进度减小"
/>
</LinearLayout>
</LinearLayout>