首先是Progress的布局
相關參數有
1：style="?android:attr/progressBarStyleHorizontal"--------設定進度條顯示的樣式(水準方向的)
2：android:visibility="gone"---------設定為不可見
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
android:id="@+id/firstBar"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:visibility="gone"
/>
android:id="@+id/secondBar"
style="?android:attr/progressBarStyle"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:visibility="gone"
/>
android:id="@+id/myButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/progressBar_Button_Name"
/>
然後通過Activity調用布局檔案
android進度條的預設大小為100；可以通過setProgress(int i);設定進度大小
并且android進度條預設是不可見的可以通過Progress.setVisibility(View.VISIBLE);設定可見
也可以設定為不可見：Progress.setVisibility(View.GONE);
package zhou.demo;
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 ProgressBarTest extends Activity {
//對控件進行聲明
private ProgressBar firstBar = null;
private ProgressBar secondBar = null;
private Button myButton = null;
private int i = 0;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//根據控件的ID來取得控件對象
firstBar = (ProgressBar)this.findViewById(R.id.firstBar);
secondBar = (ProgressBar)findViewById(R.id.secondBar);
myButton = (Button)findViewById(R.id.myButton);
myButton.setOnClickListener(new OnClickListener(){
public void onClick(View v) {
if(i == 0){
//設定進度條可見
firstBar.setVisibility(View.VISIBLE);
secondBar.setVisibility(View.VISIBLE);
}else if(i < 100){
firstBar.setProgress(i);
firstBar.setSecondaryProgress(i+5);
secondBar.setProgress(i);
}else{
//設定進度條不可見
firstBar.setVisibility(View.GONE);
secondBar.setVisibility(View.GONE);
}
i += 10;
}
});
}
}
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2011-06-10 00:29
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