敏感词汇通常会在后台进行判断,但偶尔也会有在前端进行判断,其实很简单,就是对一个字符串中特定字符的替换。
布局代码:
代码语言:javascript复制<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@ id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="visahall.cn.xiaoxin.MainActivity">
<Button
android:id="@ id/btn"
android:text="点击确定把EditText中的字显示在TextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true" />
<TextView
android:id="@ id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
android:layout_below="@ id/btn"
android:layout_centerHorizontal="true"
android:layout_marginTop="196dp" />
<EditText
android:id="@ id/edit"
android:hint="敏感字为 美国, 西班牙, 德玛西亚"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@ id/btn"
android:layout_alignParentStart="true" />
</RelativeLayout>
MainActivity:
代码语言:javascript复制public class MainActivity extends AppCompatActivity {
private Button button;
private EditText editText;
private TextView textView;
private List<String> list = new ArrayList<>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
init();
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String aa = String.valueOf(editText.getText());
for (int i = 0; i < list.size(); i ) {
String x = list.get(i); //x为敏感词汇
if (aa.contains(x)){
aa = aa.replaceAll(x, getXing(x));
}
}
textView.setText(aa);
}
});
}
private void init() {
button = (Button) findViewById(R.id.btn);
editText = (EditText) findViewById(R.id.edit);
textView = (TextView) findViewById(R.id.text);
list.add("国家级");
list.add("第一");
list.add("史上");
list.add("垃圾");
}
//得到"*"的数量,然后进行替换相应的字符串
private String getXing(String f){
String a = "";
for (int i = 0; i < f.length(); i ) {
a = a "*";
}
return a;
}
}