安卓第十天——Progress组件的简单实现

Main.xml

<?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" >

<ProgressBar

android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:max="100"
android:visibility="invisible"
android:id="@+id/progress1"
/>
<ProgressBar

android:layout_width="200dp"
android:layout_height="wrap_content"
style="@android:style/Widget.ProgressBar.Horizontal"
android:max="100"
android:id="@+id/progress2"
android:visibility="invisible"
/>

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="点击"
android:id="@+id/button"
/>
</LinearLayout>

ProgressBarActivity.java

package cn.class3g.progressbar;

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;

public class ProgressBarActivity extends Activity {

private ProgressBar progress1 =null;

private ProgressBar progress2=null;

private Button button =null;

private int i=0;

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);


progress1 =(ProgressBar) this.findViewById(R.id.progress1);

progress2 = (ProgressBar) this.findViewById(R.id.progress2);

button= (Button) this.findViewById(R.id.button);

button.setOnClickListener(new progress());





}

class progress implements OnClickListener{

public void onClick(View v) {

if(i==0){

progress1.setVisibility(View.VISIBLE);
progress2.setVisibility(View.VISIBLE);


}else if(i<progress2.getMax()){

progress2.setProgress(i);

progress2.setSecondaryProgress(i+10);



}

i=i+10;

}




}


}