android ProgressBar 的使用
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2024-03-24 15:44:10
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1. main文件
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/hello" /> <ProgressBar android:id="@+id/progressBar1" style="?android:attr/progressBarStyleHorizontal" android:layout_width="255dp" android:layout_height="wrap_content" android:visibility="gone" /> <ProgressBar android:id="@+id/progressBar2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:visibility="gone" /> <Button android:id="@+id/button" android:text="Ok" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </LinearLayout>
2. java 文件的写法
package com.android.voew;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ProgressBar;
/**
*
* @author liuqing
* @version 1.0
* @see Android ProgreeBar 的使用
* 2011-10-12
*
*/
public class Viewchapter3Activity extends Activity {
/** Called when the activity is first created. */
private ProgressBar firstProgree;
private ProgressBar secondProgree;
private Button button;
private int i = 0;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
this.firstProgree = (ProgressBar)this.findViewById(R.id.progressBar1);
this.secondProgree = (ProgressBar)this.findViewById(R.id.progressBar2);
this.button = (Button)this.findViewById(R.id.button);
this.button.setOnClickListener(new ButtonListener());
}
//添加OnClickListener方法
class ButtonListener implements OnClickListener {
@Override
public void onClick(View v) {
if (i == 0) {
firstProgree.setMax(150);
secondProgree.setMax(150);
firstProgree.setVisibility(View.VISIBLE);
secondProgree.setVisibility(View.VISIBLE);
button.setText("Begin");
i++;
}
else {
firstProgree.setProgress(i * 10);
//设进度条的从进度属性
firstProgree.setSecondaryProgress((i * 10) + 10);
secondProgree.setProgress(i * 10);
if (firstProgree.getMax() <= i * 10) {
firstProgree.setVisibility(View.GONE);
i = 0;
button.setText("OK");
secondProgree.setVisibility(View.GONE);
}
i++;
}
}
}
}
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