package com.example.com;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.TextView;
import java.util.Random;
public class MainActivity extends Activity {
protected void onCreate(Bundle savedInstanceState){
TextView tv;
String s, r = "";
int start = 6,end = 14;
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tv = (TextView) findViewById(R.id.tvInfo2);
s = getResources().getString(R.string.info);
for(int i = 0;i<end - start;i++)
r=r+"*";
s =s.replace(s.substring(start, end),r);
tv.setText(s);
}
//就是这行改背景颜色的没反应 public class colorss extends Activity {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
int bgc[] = {R.color.gp1,
R.color.bg2,
R.color.bg3,
R.color.bg4,
R.color.bg5};
Random r= new Random();
int i = r.nextInt(bgc.length);
getWindow().setBackgroundDrawableResource(bgc[i]);}
@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;
}
}
}
小罗希冀
l1l1l1l
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