{"id":693,"date":"2011-03-31T17:42:57","date_gmt":"2011-03-31T09:42:57","guid":{"rendered":"http:\/\/www.strongd.net\/?p=693"},"modified":"2011-03-31T17:58:45","modified_gmt":"2011-03-31T09:58:45","slug":"android-%e5%a6%82%e4%bd%95%e4%bf%9d%e5%ad%98%e7%b0%a1%e5%96%ae%e7%9a%84%e9%85%8d%e7%bd%ae%e4%bf%a1%e6%81%af","status":"publish","type":"post","link":"https:\/\/www.strongd.net\/?p=693","title":{"rendered":"android \u5982\u4f55\u4fdd\u5b58\u7c21\u55ae\u7684\u914d\u7f6e\u4fe1\u606f(SharedPreferences\u3001File\u548cProperties)"},"content":{"rendered":"

\u6211\u5011\u77e5\u9053\u5728android\u7684\u958b\u767c\u4e2d\uff0c\u4fdd\u5b58\u9805\u76ee\u79c1\u6709\u6578\u64da\u7684\u5b58\u5132\u65b9\u5f0f\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\uff1aSharedPreferences,File,SQLite,Network.\u56db\u7a2e\u65b9\u5f0f\uff0c\u800c\u8981\u7528\u5230\u61c9
\n\u7528\u7a0b\u5e8f\u4e4b\u9593\u6578\u64da\u7684\u5171\u4eab\u8981\u4f7f\u7528ContentProvider \u3002\u90a3\u4eca\u5929\u6211\u5011\u53ea\u6558\u8ff0\u4e00\u4e0b\u50c5\u50c5\u4fdd\u5b58\u4e00\u4e9b\u6211\u5011\u767b\u9304\u7b49\u7684\u4e00\u4e9b\u914d\u7f6e\u4fe1\u606f\u7684\u6578\u64da\uff0c\u4e5f\u5c31\u662f\u8aaa\u7528\u5230\u7684\u6578
\n\u64da\u91cf\u90fd\u4e0d\u662f\u5f88\u5927\uff0c\u90a3\u9ebc\u6211\u5011\u5c31\u53ef\u4ee5\u9078\u64c7SharedPreferences\u548cFile\u7684\u65b9\u5f0f\u3002\u9019\u88e1\u53ea\u91dd\u5c0d\u6027\u7684\u7d50\u5408File\u548cProperties\u9032\u884c\u6558\u8ff0\u3002
\n\u4e00\u3002SharedPreferences<\/p>\n

1. \u5b83\u53ef\u4ee5\u4fdd\u5b58\u4e0a\u4e00\u6b21\u7528\u6236\u6240\u505a\u7684\u4fee\u6539\u6216\u8005\u81ea\u5b9a\u7fa9\u53c3\u6578\u7684\u8a2d\u5b9a\uff0c\u7576\u518d\u6b21\u555f\u52d5\u7a0b\u5e8f\u5f8c\u4f9d\u7136\u53ef\u4ee5\u4fdd\u6301\u539f\u6709\u7684\u8a2d\u7f6e\u3002\u9019\u88e1\u53ea\u8aaa\u660e\u4e00\u4e0b\u4f7f\u7528\u65b9\u5f0f\u3002\u6bd4\u5982\u4e0b
\n\u9762\u7684\u4ee3\u78bc\u5728OnCreate\u4e2d\u4f7f\u7528\uff1a<\/p>\n

SharedPreferences mSharedPreferences = getSharedPreferences(“list”,MODE_PRIVATE);<\/p>\n

String mTempString = mSharedPreferences.getString(“config”,”default”);<\/p><\/blockquote>\n

\u5176\u4e2d”list”\u662fSharedPreferences\u7684\u6587\u4ef6\u7684\u540d\u5b57\uff0cSharedPreferences\u662f\u4ee5\u9375\u503c\u6620\u5c04\u7684\u95dc\u4fc2\u5b58\u653e\u6578\u64da\u3002\u4e0d\u904e\u591a\u89e3\u91cb\uff0c\u4f60\u4e5f\u53ef\u4ee5\u9019\u6a23\u7528\uff1a<\/p>\n

SharedPreferences mSharedPreferences = getPreferences(MODE_PRIVATE);<\/p><\/blockquote>\n

\u9019\u6a23\u9ed8\u8a8d\u7684\u6587\u4ef6\u540d\u662factivity\u7684\u540d\u5b57\u3002<\/p>\n

2. \u9000\u51faactivity\u7684\u6642\u5019\u4fdd\u5b58\u6578\u64da\uff0c\u5728OnPause\u4e2d\u4f7f\u7528\uff1a<\/p>\n

SharedPreferences mSharedPreferences = getSharedPreferences(“list”,\u00a0 \u00a0 MODE_PRIVATE);<\/p>\n

mSharedPreferences.edit().putString(“config”,”data” ).commit();<\/p><\/blockquote>\n

3. SharedPreferences \u662f\u4ee5xml\u6587\u4ef6\u7684\u65b9\u5f0f\u81ea\u52d5\u4fdd\u5b58\u7684\uff0c\u5728DDMS\u4e2d\u7684FileExplorer\u4e2d\u5c55\u958b\/data\/data\/\u5305\u540d\/shared-prefs\u4e0b\u9762\u5c31\u662fSharedPreferences\u6587\u4ef6\u3002<\/p>\n

4. SharedPreferences\u6587\u4ef6\u53ea\u53ef\u4ee5\u7528\u4f86\u5b58\u653e\u57fa\u672c\u7684\u6578\u64da\u985e\u578b\u3002
\n\u4e8c\u3002\u7d50\u5408File\u548cProperties\u9032\u884c\u4fdd\u5b58\u3002<\/p>\n

A Properties object is a Hashtable where the keys and values must be Strings. Each property can have a default Properties\u00a0list which specifies the default values to be used when a given key is not found in this Properties instance.<\/p><\/blockquote>\n

1.\u6240\u4ee5\uff0cProperties\u5c0d\u8c61\u4e5f\u662f\u4e00\u500b\u54c8\u5e0c\u8868\uff0c\u4e5f\u662f\u4e00\u500b\u9375\u503c\u5c0d\u61c9\u7684\u95dc\u4fc2\uff0c\u56e0\u6b64\u548c\u4e0a\u9762\u7684\u64cd\u4f5c\u76f8\u4f3c\u3002\u4e0b\u9762\u770b\u5177\u9ad4\u7684\u7a0b\u5e8f\u3002<\/p>\n

public class File_ByProperties extends Activity {<\/p>\n

private boolean mStatus;<\/p>\n

private TextView mShowStatus;
\n\/** Called when the activity is first created. *\/<\/p>\n

@Override<\/p>\n

public void onCreate(Bundle savedInstanceState) {<\/p>\n

super.onCreate(savedInstanceState);<\/p>\n

setContentView(R.layout.main);<\/p>\n

mShowStatus = (TextView) findViewById(R.id.show);<\/p>\n

load();<\/p>\n

}
\nprivate void load() {<\/p>\n

\/\/ TODO Auto-generated method stub<\/p>\n

Properties mProperties = new Properties();<\/p>\n

try {<\/p>\n

FileInputStream mInputStream = openFileInput(“configuration”);<\/p>\n

mProperties.load(mInputStream);<\/p>\n

mStatus = Boolean.valueOf(mProperties.get(“status”).toString());<\/p>\n

mShowStatus.setText(“the status is : ” + mStatus);<\/p>\n

} catch (FileNotFoundException e) {<\/p>\n

\/\/ TODO Auto-generated catch block<\/p>\n

System.out.println(e.toString());<\/p>\n

} catch (IOException e) {<\/p>\n

System.out.println(e.toString());<\/p>\n

}<\/p>\n

}
\n@Override<\/p>\n

public boolean onKeyDown(int keyCode, KeyEvent event) {<\/p>\n

\/\/ TODO Auto-generated method stub<\/p>\n

if (keyCode == KeyEvent.KEYCODE_DPAD_UP) {<\/p>\n

mStatus = !mStatus;<\/p>\n

mShowStatus.setText(“the status is : ” + mStatus);<\/p>\n

}<\/p>\n

return super.onKeyDown(keyCode, event);<\/p>\n

}
\n@Override<\/p>\n

protected void onPause() {<\/p>\n

\/\/ TODO Auto-generated method stub<\/p>\n

super.onPause();<\/p>\n

Properties mProperties = new Properties();<\/p>\n

if (mProperties.containsKey(“status”)) {<\/p>\n

mProperties.remove(“status”);<\/p>\n

}<\/p>\n

mProperties.put(“status”, String.valueOf(mStatus));<\/p>\n

try {<\/p>\n

FileOutputStream mOutputStream = openFileOutput(“configuration”,\u00a0 \u00a0 \u00a0MODE_WORLD_WRITEABLE);<\/p>\n

mProperties.store(mOutputStream, null);<\/p>\n

} catch (FileNotFoundException e) {<\/p>\n

\/\/ TODO Auto-generated catch block<\/p>\n

e.printStackTrace();<\/p>\n

} catch (IOException e) {<\/p>\n

e.printStackTrace();<\/p>\n

}<\/p>\n

}
\n}<\/p><\/blockquote>\n

2. \u5728DDMS\u4e2d\u7684FileExplorer\u4e2d\u5c55\u958b\/data\/data\/\u5305\u540d\/files,\u53ef\u4ee5\u67e5\u770b\u5230\u8a72\u6587\u4ef6\u3002
\n\u4e09\u3002\u4f60\u9084\u53ef\u4ee5\u5c07\u4e00\u500b\u975c\u614b\u7684\u6587\u4ef6\u653e\u5230res\/raw\/\u4e0b\u9762\uff0c\u7136\u5f8c\u901a\u904egetResources().openRawResource(R.raw.\u6587\u4ef6);\u4f86\u5f97\u5230\u4e00\u500bInputStream\u5c0d\u8c61\uff0c\u7136\u5f8c\u8b80\u53d6\u6587\u4ef6\u7684\u5167\u5bb9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u6211\u5011\u77e5\u9053\u5728android\u7684\u958b\u767c\u4e2d\uff0c\u4fdd\u5b58\u9805\u76ee\u79c1\u6709\u6578\u64da\u7684\u5b58\u5132\u65b9\u5f0f\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\uff1aSharedPreferences,File,SQLite,Network.\u56db\u7a2e\u65b9\u5f0f\uff0c\u800c\u8981\u7528\u5230\u61c9 \u7528\u7a0b\u5e8f\u4e4b\u9593\u6578\u64da\u7684\u5171\u4eab\u8981\u4f7f\u7528ContentProvider \u3002\u90a3\u4eca\u5929\u6211\u5011\u53ea\u6558\u8ff0\u4e00\u4e0b\u50c5\u50c5\u4fdd\u5b58\u4e00\u4e9b\u6211\u5011\u767b\u9304\u7b49\u7684\u4e00\u4e9b\u914d\u7f6e\u4fe1\u606f\u7684\u6578\u64da\uff0c\u4e5f\u5c31\u662f\u8aaa\u7528\u5230\u7684\u6578 \u64da\u91cf\u90fd\u4e0d\u662f\u5f88\u5927\uff0c\u90a3\u9ebc\u6211\u5011\u5c31\u53ef\u4ee5\u9078\u64c7SharedPreferences\u548cFile\u7684\u65b9\u5f0f\u3002\u9019\u88e1\u53ea\u91dd\u5c0d\u6027\u7684\u7d50\u5408File\u548cProperties\u9032\u884c\u6558\u8ff0\u3002 \u4e00\u3002SharedPreferences 1. \u5b83\u53ef\u4ee5\u4fdd\u5b58\u4e0a\u4e00\u6b21\u7528\u6236\u6240\u505a\u7684\u4fee\u6539\u6216\u8005\u81ea\u5b9a\u7fa9\u53c3\u6578\u7684\u8a2d\u5b9a\uff0c\u7576\u518d\u6b21\u555f\u52d5\u7a0b\u5e8f\u5f8c\u4f9d\u7136\u53ef\u4ee5\u4fdd\u6301\u539f\u6709\u7684\u8a2d\u7f6e\u3002\u9019\u88e1\u53ea\u8aaa\u660e\u4e00\u4e0b\u4f7f\u7528\u65b9\u5f0f\u3002\u6bd4\u5982\u4e0b \u9762\u7684\u4ee3\u78bc\u5728OnCreate\u4e2d\u4f7f\u7528\uff1a SharedPreferences mSharedPreferences = getSharedPreferences(“list”,MODE_PRIVATE); String mTempString = mSharedPreferences.getString(“config”,”default”); \u5176\u4e2d”list”\u662fSharedPreferences\u7684\u6587\u4ef6\u7684\u540d\u5b57\uff0cSharedPreferences\u662f\u4ee5\u9375\u503c\u6620\u5c04\u7684\u95dc\u4fc2\u5b58\u653e\u6578\u64da\u3002\u4e0d\u904e\u591a\u89e3\u91cb\uff0c\u4f60\u4e5f\u53ef\u4ee5\u9019\u6a23\u7528\uff1a SharedPreferences mSharedPreferences = getPreferences(MODE_PRIVATE); \u9019\u6a23\u9ed8\u8a8d\u7684\u6587\u4ef6\u540d\u662factivity\u7684\u540d\u5b57\u3002 2. \u9000\u51faactivity\u7684\u6642\u5019\u4fdd\u5b58\u6578\u64da\uff0c\u5728OnPause\u4e2d\u4f7f\u7528\uff1a SharedPreferences mSharedPreferences = getSharedPreferences(“list”,\u00a0 \u00a0 MODE_PRIVATE); mSharedPreferences.edit().putString(“config”,”data” ).commit(); 3. SharedPreferences \u662f\u4ee5xml\u6587\u4ef6\u7684\u65b9\u5f0f\u81ea\u52d5\u4fdd\u5b58\u7684\uff0c\u5728DDMS\u4e2d\u7684FileExplorer\u4e2d\u5c55\u958b\/data\/data\/\u5305\u540d\/shared-prefs\u4e0b\u9762\u5c31\u662fSharedPreferences\u6587\u4ef6\u3002 4. SharedPreferences\u6587\u4ef6\u53ea\u53ef\u4ee5\u7528\u4f86\u5b58\u653e\u57fa\u672c\u7684\u6578\u64da\u985e\u578b\u3002 \u4e8c\u3002\u7d50\u5408File\u548cProperties\u9032\u884c\u4fdd\u5b58\u3002 A Properties object is a Hashtable where the keys and values must be Strings. Each property can … Continue reading android \u5982\u4f55\u4fdd\u5b58\u7c21\u55ae\u7684\u914d\u7f6e\u4fe1\u606f(SharedPreferences\u3001File\u548cProperties)<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24,1],"tags":[205],"class_list":["post-693","post","type-post","status-publish","format-standard","hentry","category-android","category-java","tag-android"],"_links":{"self":[{"href":"https:\/\/www.strongd.net\/index.php?rest_route=\/wp\/v2\/posts\/693","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.strongd.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.strongd.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.strongd.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.strongd.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=693"}],"version-history":[{"count":3,"href":"https:\/\/www.strongd.net\/index.php?rest_route=\/wp\/v2\/posts\/693\/revisions"}],"predecessor-version":[{"id":695,"href":"https:\/\/www.strongd.net\/index.php?rest_route=\/wp\/v2\/posts\/693\/revisions\/695"}],"wp:attachment":[{"href":"https:\/\/www.strongd.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=693"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.strongd.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=693"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.strongd.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=693"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}