【程式開始執行時畫面】
【輸入欄位資料時畫面】
【讀出 SharedPreferences 資料時畫面】
【清除螢幕後畫面】
<EditGetSharedPreferences.java>
1: package com.android.editgetsharedpreferences;
2:
3: import java.text.SimpleDateFormat;
4: import java.util.Date;
5:
6: import android.app.Activity;
7: import android.content.Context;
8: import android.content.SharedPreferences;
9: import android.os.Bundle;
10: import android.view.View;
11: import android.view.inputmethod.InputMethodManager;
12: import android.widget.Button;
13: import android.widget.EditText;
14: import android.widget.TextView;
15:
16: public class EditGetSharedPreferences extends Activity {
17:
18: public static final String PREF = "EditGetPreferences";
19: public static final String PREF_ACCOUNT = "Account";
20: public static final String PREF_PASSORD = "Password";
21: public static final String PREF_UPDATETIME = "UpdateTime";
22: SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MMM-dd hh:mm:ss");
23:
24: private EditText edittextAccount, edittextPassword;
25: private TextView textviewAccount, textviewPassword, textviewUpdateTime;
26: private Button btnSave, btnGet, btnExit, btnClearScreen, btnClearPref;
27:
28:
29: @Override
30: public void onCreate(Bundle savedInstanceState) {
31: super.onCreate(savedInstanceState);
32: setContentView(R.layout.main);
33: findViews();
34: setButtonListeners();
35: }
36:
37: private void findViews() {
38: edittextAccount = (EditText) findViewById(R.id.accountEditText);
39: edittextPassword = (EditText) findViewById(R.id.passwordEditText);
40: textviewAccount = (TextView) findViewById(R.id.accountTextView);
41: textviewPassword = (TextView) findViewById(R.id.passwordTextView);
42: textviewUpdateTime = (TextView) findViewById(R.id.updatetimeTextView);
43: btnSave = (Button) findViewById(R.id.saveBtn);
44: btnClearPref = (Button) findViewById(R.id.clearprefBtn);
45: btnClearScreen = (Button) findViewById(R.id.clearscreenBtn);
46: btnExit = (Button) findViewById(R.id.exitBtn);
47: btnGet = (Button) findViewById(R.id.getBtn);
48:
49: }
50:
51: private void setButtonListeners(){
52: btnSave.setOnClickListener(new Button.OnClickListener(){
53: public void onClick(View v) {
54: // 儲存資料至 SharedPreferences
55: saveSharedPreferences();
56: // set Focus On edittextAccount
57: edittextAccount.requestFocus();
58: }
59: });
60:
61: btnClearPref.setOnClickListener(new Button.OnClickListener(){
62: public void onClick(View v) {
63: // 清除 SharedPreferences 資料
64: clearSharedPreferences();
65: // set Focus On edittextAccount
66: edittextAccount.requestFocus();
67: }
68: });
69:
70: btnClearScreen.setOnClickListener(new Button.OnClickListener(){
71: public void onClick(View v) {
72: // 清除所有 EditTexts 的資料
73: clearEditTexts();
74: // 清除所有 TextViews 的資料
75: clearTextViews();
76: // set Focus On edittextAccount
77: edittextAccount.requestFocus();
78: }
79: });
80:
81: btnExit.setOnClickListener(new Button.OnClickListener(){
82: public void onClick(View v) {
83: // 離開程式
84: android.os.Process.killProcess(android.os.Process.myPid());
85: }
86: });
87:
88: btnGet.setOnClickListener(new Button.OnClickListener(){
89: public void onClick(View v) {
90: // 讀取 SharedPreferences 資料
91: getSharedPreferences();
92: // set Focus On edittextAccount
93: edittextAccount.requestFocus();
94: }
95: });
96: }
97:
98: private void saveSharedPreferences() {
99: // 儲存資料至 SharedPreferences
100: Date date = new Date (System.currentTimeMillis());
101: SharedPreferences settings = getSharedPreferences("PREF", 0);
102: SharedPreferences.Editor preEdit = settings.edit();
103: preEdit.putString("PREF_ACCOUNT", edittextAccount.getText().toString());
104: preEdit.putString("PREF_PASSWORD", edittextPassword.getText().toString());
105: preEdit.putString("PREF_UPDATETIME", date.toString());
106: preEdit.commit();
107: // 隱藏 SoftKeyboard
108: hideSoftKeyboard();
109: // 清除所有 TextViews 的資料
110: clearTextViews();
111: }
112:
113: private void getSharedPreferences() {
114: // 讀取 SharedPreferences 資料
115: SharedPreferences settings = getSharedPreferences("PREF", 0);
116: textviewAccount.setText(settings.getString("PREF_ACCOUNT", ""));
117: textviewPassword.setText(settings.getString("PREF_PASSWORD", ""));
118: textviewUpdateTime.setText(settings.getString("PREF_UPDATETIME", ""));
119: // 隱藏 SoftKeyboard
120: hideSoftKeyboard();
121: }
122:
123: private void clearSharedPreferences() {
124: // 清除 SharedPreferences 資料
125: SharedPreferences settings = getSharedPreferences("PREF", 0);
126: settings.edit().clear().commit();
127: // 清除所有 TextViews 的資料
128: clearTextViews();
129: }
130:
131: private void clearEditTexts(){
132: // 清除所有 EditTexts 的資料
133: edittextAccount.setText("");
134: edittextPassword.setText("");
135: }
136:
137: private void clearTextViews(){
138: // 清除所有 TextViews 的資料
139: textviewAccount.setText("");
140: textviewPassword.setText("");
141: textviewUpdateTime.setText("");
142: }
143:
144: private void hideSoftKeyboard(){
145: // 隱藏 SoftKeyboard
146: InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
147: imm.hideSoftInputFromWindow(getWindow().peekDecorView().getWindowToken(), 0);
148: }
149: }
<main.xml>
1: <?xml version="1.0" encoding="utf-8"?>2: <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"3: android:layout_width="fill_parent"4: android:layout_height="fill_parent"5: android:orientation="vertical" >6:7: <LinearLayout8: android:id="@+id/linearLayout1"9: android:layout_width="match_parent"10: android:layout_height="wrap_content"11: android:orientation="vertical" >12:13: <EditText14: android:id="@+id/accountEditText"15: android:layout_width="match_parent"16: android:layout_height="wrap_content"17: android:hint="@string/accountHint" >18:19: <requestFocus />20:21: </EditText>22:23: <EditText24: android:id="@+id/passwordEditText"25: android:layout_width="match_parent"26: android:layout_height="wrap_content"27: android:hint="@string/passwordHint"28: android:inputType="textPassword" >29:30: </EditText>31:32: <LinearLayout33: android:id="@+id/linearLayout2"34: android:layout_width="match_parent"35: android:layout_height="wrap_content" >36:37: <Button38: android:id="@+id/saveBtn"39: android:layout_width="wrap_content"40: android:layout_height="wrap_content"41: android:text="@string/strSave" />42:43: <Button44: android:id="@+id/clearscreenBtn"45: android:layout_width="wrap_content"46: android:layout_height="wrap_content"47: android:text="@string/strClearScreen" />48:49: <Button50: android:id="@+id/clearprefBtn"51: android:layout_width="wrap_content"52: android:layout_height="wrap_content"53: android:text="@string/strClearPref" />54:55: <Button56: android:id="@+id/exitBtn"57: android:layout_width="wrap_content"58: android:layout_height="wrap_content"59: android:text="@string/strExit" />60:61: </LinearLayout>62:63: </LinearLayout>64:65: <LinearLayout66: android:id="@+id/linearLayout3"67: android:layout_width="match_parent"68: android:layout_height="wrap_content"69: android:orientation="vertical" >70:71: <Button72: android:id="@+id/getBtn"73: android:layout_width="match_parent"74: android:layout_height="wrap_content"75: android:text="@string/strGet" />76:77: <TextView78: android:id="@+id/accountTextView"79: android:layout_width="match_parent"80: android:layout_height="wrap_content"81: android:text="@string/strNull" />82:83: <TextView84: android:id="@+id/passwordTextView"85: android:layout_width="match_parent"86: android:layout_height="wrap_content"87: android:text="@string/strNull" />88:89: <TextView90: android:id="@+id/updatetimeTextView"91: android:layout_width="match_parent"92: android:layout_height="wrap_content"93: android:text="@string/strNull" />94:95: <TextView96: android:id="@+id/textView1"97: android:layout_width="match_parent"98: android:layout_height="wrap_content"99: android:gravity="center"100: android:text="@string/strCopyright" />101:102: </LinearLayout>103:104: </LinearLayout>
<strings.xml>
1: <?xml version="1.0" encoding="utf-8"?>
2: <resources>
3:
4: <string name="hello">Hello World, EditGetSharedPreferences!</string>
5: <string name="app_name">偏好設定</string>
6: <string name="accountHint">請輸入帳號名稱</string>
7: <string name="passwordHint">請輸入密碼</string>
8: <string name="strSave">儲存</string>
9: <string name="strExit">離開</string>
10: <string name="strGet">讀出 SharedPreferences 資料</string>
11: <string name="strNull"></string>
12: <string name="strClearScreen">清除畫面</string>
13: <string name="strClearPref">清除 Pref 資料</string>
14: <string name="strCopyright">\nCopyright : Terry Wu (terry.wuteyu@gmail.com)</string>
15:
16: </resources>
沒有留言:
張貼留言