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我正在为android创建锁定屏幕应用程序,但我无法在输入正确密码时完成活动。该代码仅适用于密码为一个字符的情况;否则,它不解锁。我认为这与我如何修改全局变量有关。Android自定义锁定屏幕密码
这是我用来测试的代码。它应该通过按顺序触摸两个文本查看来解锁,但不会。
public class LockScreen extends Activity implements OnClickListener {
String password = "cd";
String guess;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.lock_layout);
TextView c = (TextView) findViewById(R.id.c);
TextView d = (TextView) findViewById(R.id.d);
c.setOnClickListener(this);
d.setOnClickListener(this);
}
public void onClick(View v) {
switch(v.getId()) {
case R.id.c:
if (guess == null) {
guess = "c";
} else {
guess += "c";
}
break;
case R.id.d:
if (guess == null) {
guess = "d";
} else {
guess += "d";
}
break;
}
if (guess == password) {
finish();
}
}