android控制項開發之progress

android控制項開發之progress
android控制項開發之progress本博文主要講述的是android開發中的progress進度條的使用方法，代碼如下：
MainActivity.java：
package com.example.progress;


import android.os.Bundle;
import android.R.integer;
import android.app.Activity;
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 firstBar = null;
private ProgressBar secendBar = null;
private Button myButton = null;
private int i = 0; //記錄bar的位置

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

firstBar = (ProgressBar)findViewById(R.id.firstBar);
secendBar = (ProgressBar)findViewById(R.id.secendBar);
myButton = (Button)findViewById(R.id.myButton);

//綁定監聽器
myButton.setOnClickListener(new myBuutonSetOnclickListener());

}

class myBuutonSetOnclickListener implements OnClickListener{


@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(i == 0){
//設定progress bar可見
firstBar.setVisibility(View.VISIBLE);
secendBar.setVisibility(View.VISIBLE);

}
else if(i > 0 && i < firstBar.getMax()){
//設定進度條的主進度的當前值
firstBar.setProgress(i);
//設定進度條的第二進度的當前值
firstBar.setSecondaryProgress(i + 10);

}
else{
firstBar.setVisibility(View.GONE);
secendBar.setVisibility(View.GONE);
firstBar.setProgress(0);
firstBar.setSecondaryProgress(0);
i = -10;
}

i += 10;
}

}


@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;
}


}

布局檔案main.xml：
xmlns:tools=http://schemas.android.com/tools
android:id=@+id/LinearLayout1
android:layout_width=match_parent
android:layout_height=match_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=.MainActivity >


android:layout_width=wrap_content
android:layout_height=wrap_content
android:text=@string/hello_world />

android:id=@+id/firstBar
android:layout_width=fill_parent
android:layout_height=wrap_content
android:max=200
android:visibility=gone
style=?android:attr/progressBarStyleHorizontal/>

android:id=@+id/secendBar
android:layout_width=wrap_content
android:layout_height=wrap_content
android:visibility=gone
style=?android:attr/progressBarStyle/>

android:id=@+id/myButton
android:layout_width=wrap_content
android:layout_height=wrap_content
android:text=button
tools:ignore=HardcodedText />