关于Android SDKI新版本中API修改的总结

Android SDK 在版本升级的过程中做了一些API的修改，如果我们不清楚这些改变就不知道新版本API如何调用了，我今天就遇到一个问题，找各种资料看，发现很多人收藏的一些资料貌似很新，实际上都是很老的资料，我都怀疑他们是不是试过就收藏了，几面仍然用的是很久的API调用方法。下面是我收藏的一点点总结：

1）.IntentReceiver 到 BroadcastReceiver的改变
假设你有一个 IntentReceiver 叫做 MyReceiver，在 AndroidManifest.xml文件中出现：
Error: MyReceiver does not extend android.context.BroadcastReceiver，
并且在 MyReceiver类定义中出现：
Error: Cannot resolve type IntentReceiver，
解决办法是：
替换 import android.content.IntentReceiver：
public class MyReceiver extends IntentReceiver
{
　　@Override
　　public void onReceiveIntent(Context context, Intent intent)
　　{
　　}
}
为：
import android.content.BroadcastReceiver;
public class MyReceiver extends BroadcastReceiver
{
　　@Override
　　public void onReceive(Context context, Intent intent)
　　{
　　}
}

2）. onFreeze() 到 onSaveInstanceState()的改变
替换 @Override
protected void onFreeze(Bundle outState) {
　 super.onFreeze(outState);
}
为：
@Override
protected void onSaveInstanceState(Bundle outState) {
　 super.onSaveInstanceState(outState);
}

3）. startSubActivity() 到 startActivityForResult()的改变
替换 Intent i = new Intent(this, NoteEdit.class);
i.putExtra(NotesDbAdapter.KEY_ROWID, id);
startSubActivity(i, ACTIVITY_EDIT);
为：
Intent i = new Intent(this, NoteEdit.class);
i.putExtra(NotesDbAdapter.KEY_ROWID, id);
startActivityForResult(i, ACTIVITY__EDIT);

4）. Limits on resources available to application
出现如下错误：
Error: Resource is not public..
Some resources have been made private in the latest release..
Only resources needed for application development are left public.
解决办法：
检查 public resources @ docs/reference/android/package-summary.html

5）. Layout attributes renamed
问题描述：Some xml attributes are renamed, removed..and new attributes are added.
解决办法: Use the new auto-complete feature in Eclipse for yourlayout.xml files and choose from the available attributes. Use the new layout editor (the first tab

when you click on your layout xml files ) to debug and check your views/layouts.

6）. Integer types not allowed at layout_xxx,spacing,padding,etc
问题描述: It is required to specify the unit of measurement for layout attributes. Only numeric values are no longer enough, you will receive an error indicating

"Integer types not allowed"。
解决办法: Specify unit..
替换 <View layout_width="10" />为：<View layout_width="10dp" />

7）. MapView crashesDetailed Problem Description:
当你在使用MapView时看到:
    1> ClassNotFound exceptions while using MapView.
    2> java.lang.IllegalArgumentException: You need to specify an API Key for each MapView
解决办法:
对于第一个问题, Maps API 已经被移动到自有的 separate shared library，只需要把<uses-library android:name="com.google.android.maps" />添加到你的

AndroidManifest.xml 文件就可以了；对于第二个问题，你需要一个 API key 来使用 MapView, key有可以是随机字符串，把属性 android:apiKey="apisamples"绑定到你的

layout xml 文件的 MapView.

8）. See ApiDemos -> view/MapViewDemo sample code. 当你第一次尝试 re-install ApiDemos 的时候出现signing error信息，解决办法详见：

http://code.google.com/android/kb/troubleshooting.html#apidemosreinstall

9）. requestUpdates() is undefined for LocationManager
如下问题：
The LocationManager class does not fire Location update Intents. The requestUpdates method has been removed. For using mock LocationProviders , you can no

longer provide canned LocationProviders in the /system/etc/location directory。
解决办法：The LocationManager class now notifies LocationListener objects of location and status changes, rather than firing Intents. The requestUpdates method

has been renamed to requestLocationUpdates and now takes a LocationListener object rather than an Intent. A new requestStatusUpdates method has been dded,

also taking a LocationListener object. The removeUpdates method now takes a LocationListener object.

10）. 更多信息参见：http://code.google.com/android/toolbox/apis/lbs.html
A sample app for using Location Apis can be found in the files section in android-developer forums.
Cursor.putXxx() and Activity.managedCommitUpdates() are deprecated
问题：You will notice that the Cursor.putXxx() methods and the Activity.managedCommitUpdates() are deprecated.
解决办法：replace with calls to ContentResolver:
ContentValues values = new ContentValues();
values.put(Notes.MODIFIED_DATE, System.currentTimeMillis());
values.put(Notes.TITLE, title);
values.put(Notes.NOTE, text);
// Commit all of our changes to persistent storage. When the update completes
// the content provider will notify the cursor of the change, which will
// cause the UI to be updated.
getContentResolver().update(mUri, values, null, null);

11）. See NoteEditor.java in the NotePad sample for an example of usage.
Menu.Item renamed to Menu.MenuItem
替换 public boolean onOptionsItemSelected(Menu.Item item) {
　　　　switch (item.getId()) {
　　　　.....
为： public boolean onOptionsItemSelected(Menu.MenuItem item) {
　　　　switch (item.getItemId()) {
　　　　.....


12）. menu.add() methods now take new parameter "order"
setResult() now takes Intent instead of string
替换 1) setResult(RESULT_OK, "Corky!");
2) protected void onActivityResult(int requestCode, int resultCode,
　　　　String data, Bundle extras) {
　　　　 .....
　　}
为： 1) Bundle bundle = new Bundle();
　　bundle.putString(TEST_STRING, "Corky!");
　　Intent mIntent = new Intent();
　　mIntent.putExtras(bundle);
　　setResult(RESULT_OK, mIntent);
2) protected void onActivityResult(int requestCode, int resultCode,
　　　　Intent data) {
　　　　.....
　　}