我想做一個安全應用程序,要求用戶輸入密碼,如果它是錯誤的密碼對話框(在Theme.Dialog中使用一個活動)將重新啓動,但問題活動未啓動。對於後退按鈕,如果我再按兩次,它將直接關閉對話框。startActivity(意圖)似乎是越野車
package nyp.android.project;
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.app.ActivityManager;
import android.app.ActivityManager.RunningTaskInfo;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.PreferenceManager;
import android.util.Log;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class PasswordDialog extends Activity {
private static final String TAG = "Logging Activity";
private static boolean isMyServiceRunning;
//Context context;
Button login;
EditText inputPassword;
String password;
protected void onCreate(Bundle savedInstanceState)
{
//this.context = context;
super.onCreate(savedInstanceState);
setContentView (R.layout.password_dialog);
final SharedPreferences passwdfile = getSharedPreferences(
PhoneFinder.PASSWORD_PREF_KEY, 0);
final String correctSHA1 = passwdfile.getString(PhoneFinder.PASSWORD_PREF_KEY, null);
login = (Button) findViewById(R.id.btnLogin);
inputPassword = (EditText) findViewById(R.id.loginPassword);
login.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
password = inputPassword.getText().toString();
final String SHA1hash = PhoneFinder.getSHA1(password);
if (correctSHA1.equals(SHA1hash)) {
Toast.makeText(PasswordDialog.this, "Correct", Toast.LENGTH_LONG).show();
finish();
stopService(new Intent(getBaseContext(), MyService.class));
Log.v(TAG, "SHA1 Hash:" + SHA1hash);
Log.v(TAG, "Correct SHA1:" + correctSHA1);
}
else {
Toast.makeText(PasswordDialog.this, "Wrong", Toast.LENGTH_LONG).show();
Intent Act2Intent = new Intent(getBaseContext(), PasswordDialog.class);
startActivity(Act2Intent);
finish();
Log.v(TAG, "SHA1 Hash:" + SHA1hash);
Log.v(TAG, "Correct SHA1:" + correctSHA1);
}
}
});
}
@Override
public void onBackPressed()
{
Intent indent = new Intent(this, PasswordDialog.class);
startActivity(indent);
}
}
修復了後面的問題!但不是其他人tho :( – dythe 2012-07-25 16:48:28