我有一個SharedPreferences可以保存一個活動的EditText輸入,並在另一個活動中顯示String值。如何顯示來自EditText用戶輸入的值?
當我在EditText字段中輸入一個輸入並按下(我創建的一個按鈕)「Save」(將EditText提交給編輯器)時,該文件被成功存儲。但是,顯示活動(顯示SharedPreferences中存儲的字符串值)不顯示值。我猜測這是因爲它是onCreate,因此屏幕在運行時會「創建」。如何在用戶立即提交(按下保存)時更新EditText值?
CustomStoreEditActivity - 只需存儲用戶輸入(EditText上的條目):
final Button saveButton = (Button) findViewById(R.id.saveButton);
saveButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
if (saveButton.isClickable()) {
SharedPreferences prefs = getSharedPreferences(
"customtime", 0);
// prefs.registerOnSharedPreferenceChangeListener(this);
final SharedPreferences.Editor edit = prefs.edit();
EditText shopName = (EditText) findViewById(R.id.shopName);
EditText open1 = (EditText) findViewById(R.id.open1);
EditText close1 = (EditText) findViewById(R.id.close1);
EditText open2 = (EditText) findViewById(R.id.open2);
EditText close2 = (EditText) findViewById(R.id.close2);
EditText open3 = (EditText) findViewById(R.id.open3);
EditText close3 = (EditText) findViewById(R.id.close3);
EditText open4 = (EditText) findViewById(R.id.open4);
EditText close4 = (EditText) findViewById(R.id.close4);
EditText open5 = (EditText) findViewById(R.id.open5);
EditText close5 = (EditText) findViewById(R.id.close5);
EditText open6 = (EditText) findViewById(R.id.open6);
EditText close6 = (EditText) findViewById(R.id.close6);
EditText open7 = (EditText) findViewById(R.id.open7);
EditText close7 = (EditText) findViewById(R.id.close7);
EditText comments = (EditText) findViewById(R.id.comments);
edit.putString("shopName", shopName.getText().toString());
edit.putString("Monday1", open1.getText().toString());
edit.putString("Monday2", close1.getText().toString());
edit.putString("Tuesday1", open2.getText().toString());
edit.putString("Tuesday2", close2.getText().toString());
edit.putString("Wednesday1", open3.getText().toString());
edit.putString("Wednesday2", close3.getText().toString());
edit.putString("Thursday1", open4.getText().toString());
edit.putString("Thursday2", close4.getText().toString());
edit.putString("Friday1", open5.getText().toString());
edit.putString("Friday2", close5.getText().toString());
edit.putString("Saturday1", open6.getText().toString());
edit.putString("Saturday2", close6.getText().toString());
edit.putString("Sunday1", open7.getText().toString());
edit.putString("Sunday2", close7.getText().toString());
edit.putString("comments", comments.getText().toString());
edit.commit();
Intent myIntent = new Intent(getBaseContext(),
CustomStoreActivity.class);
myIntent.setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
startActivity(myIntent);
Toast.makeText(getBaseContext(), "Opening Hours Saved!",
Toast.LENGTH_SHORT).show();
}
}
});
}
CustomStoreActivity - 在那裏我相信問題在於:
private void displayPreferences(){
SharedPreferences prefs = getSharedPreferences("customtime", 0);
String shopName = prefs.getString("shopName", "Empty");
String shopTime1 = prefs.getString("Monday1", " ");
String shopTime2 = prefs.getString("Monday2", " ");
String shopComments = prefs.getString("comments", "");
TextView displayPrefs = (TextView) findViewById(R.id.displayPrefs);
displayPrefs.setText(shopName + shopTime1 + shopTime2 + shopComments);
}
感謝您有充足的時間。
這很有效,非常感謝Jon。我不知道我可以從另一個MapActivity重新調用OnResume()。謝謝。 – DesignAndCode 2012-04-19 17:52:37
不客氣;不過,你不應該手動調用'onResume'。我假設你正在查看'CustomStoreActivity'開始,然後啓動編輯器'Activity',在這種情況下,當你在前臺關閉'Activity'時,它應該由Android框架自動完成重新使用來更新文本字段)。 – 2012-04-19 18:26:44