显示在标题上的进度条

效果演示

代码.java

packagecom.example.titleprogressbar;

importandroid.os.Bundle;

importandroid.app.Activity;

importandroid.view.Menu;

importandroid.view.View;

importandroid.view.View.OnClickListener;

importandroid.view.Window;

importandroid.widget.Button;

public class MainActivityextends Activity {

@Override

protected void onCreate(BundlesavedInstanceState) {

super.onCreate(savedInstanceState);

//设置窗口的特征，启用显示进度的进度条

requestWindowFeature(Window.FEATURE_PROGRESS);

//设置窗口特征，启用不显示进度的进度条

requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);

setContentView(R.layout.activity_main);

Button but1=(Button)super.findViewById(R.id.but1);

Button but2=(Button)super.findViewById(R.id.but2);

//为按钮添加监听事件

but1.setOnClickListener(newOnClickListener() {

@Override

public void onClick(View arg0){

//显示不带进度的进度条

setProgressBarIndeterminateVisibility(true);

//显示带进度的进度条

setProgressBarVisibility(true);

//设置进度条的进度

setProgress(3600);

}

});

but2.setOnClickListener(newOnClickListener() {

@Override

public void onClick(View v){

//隐藏带进度的进度条

setProgressBarIndeterminateVisibility(false);

setProgressBarVisibility(false);

}

});

}

}