给所有的Activity设置全屏幕布局

我想做一个适合所有的智能手机的全屏幕视图。使用这段代码创建一个可以水平和垂直滚动的表格布局tablelayout。同时我也想查看集中在布局中编辑框edittext的模型。如何给所有的Activity设置全屏幕布局？谢谢。

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.seconda);

HorizontalScrollView HSC = new HorizontalScrollView(this);
ScrollView VSC = new ScrollView(this);
VSC.setBackgroundResource(R.drawable.lavagna_psd);

tableLayout = new TableLayout(this);
tableLayout.setGravity(Gravity.CENTER); 

values = new EditText[3][3];

for (int i = 0; i < 3; i++) {

tableRow = new TableRow(this); 
tableRow.setGravity(Gravity.CENTER);

for (int j = 0; j < 3  ; j++) {
values[i][j] = new EditText(this);
values[i][j].setHint("r: " + (i) + " " + "c: " + (j));
values[i][j].setPadding(10, 10, 10, 10);
tableRow.addView(values[i][j]);
}

tableLayout.addView(tableRow);
}
VSC.addView(tableLayout);
HSC.addView(VSC);
setContentView(HSC);

}

在应用程序上把主题设置为全屏。在androidmanifest的应用程序标记中添加以下代码：android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen"

在配置文件中设置android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
或者在oncreate()中加入
getWindow().setFlags(WindowManager.LayoutParams. FLAG_FULLSCREEN ,

WindowManager.LayoutParams. FLAG_FULLSCREEN);