Android点击按钮实现全屏的代码

package com.hsx.test;

import java.lang.reflect.Field;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.WindowManager;
import android.view.WindowManager.LayoutParams;
import android.widget.Toast;

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
findViewById(R.id.tv_open_fullscreen).setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
stateControl(true);

int stateHeight = getStateHeight();
Toast.makeText(MainActivity.this, "状态栏高度为：" + stateHeight, Toast.LENGTH_LONG).show();
}
});

findViewById(R.id.tv_close_fullscreen).setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
stateControl(false);
}
});

}

/**
* 控制是否全屏
*
* @param enable
* @return
* @author Doraemon
* @time 2014年12月3日下午6:03:33
*/
private void stateControl(boolean enable) {
if (enable) {
LayoutParams lp = getWindow().getAttributes();
lp.flags |= WindowManager.LayoutParams.FLAG_FULLSCREEN;
getWindow().setAttributes(lp);
} else {
LayoutParams attr = getWindow().getAttributes();
attr.flags &= (~WindowManager.LayoutParams.FLAG_FULLSCREEN);
getWindow().setAttributes(attr);
}

}

/**
* 获取状态栏高度
*
* @return
* @return
* @author Doraemon
* @time 2014年12月3日下午6:03:45
*/
private int getStateHeight() {
Class<?> c = null;
Object obj = null;
Field field = null;
int x = 0, sbar = 0;
try {
c = Class.forName("com.android.internal.R$dimen");
obj = c.newInstance();
field = c.getField("status_bar_height");
x = Integer.parseInt(field.get(obj).toString());
sbar = getResources().getDimensionPixelSize(x);
} catch (Exception e) {
e.printStackTrace();
}
return sbar;
}
}