Android基礎環境搭建

標籤：

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1.安裝JDK

從官網下載JDK安裝，

http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

我選擇的如紅色，為jdk1.8.0_45。

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安裝好JDK之後，會提示安裝JRE，請保持安裝在同一目錄：如均在"Java"目錄下

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2.配置環境變數

1. 建立JAVA_HOME：選擇jdk的安裝路徑，如K:\Java\jdk1.8.0_45

2. Path中增加：%JAVA_HOME%\bin;%JAVA_HOME%\jre\bin;

3. 建立CLASSPATH：.;%JAVA_HOME%\lib\dt.jar;%JAVA_HOME%\lib\tools.jar;

4. 驗證

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   java和javac命令都通過，則說明配置好了！

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3.下載ADT

由於不知怎麼找到，從百度雲端硬碟搜尋了一個。

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4.工具 + 生產力

Ctr +shift+O 自動添加包

Ctr+/????????注釋代碼

Ctr+Shit+F????自動格式化代碼

註：如果快速鍵失效，請關閉搜狗IME的全域熱鍵。

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由於很久沒有開啟過開發環境了：

居然不知多了一個fragment.xml的配置，調試的時候總是提示有問題：

在網上找到一個經驗：

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1. 將帶有fragment_***.xml的檔案刪除；
2. 開啟對應的Activity，將ActionBarActivity替換為Activity；
3. 去除PlaceholderFragment整個類

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修改之前：

1. publicclass TestActivity extendsActionBarActivity {
2. ?
3. [email protected]
4. ???protectedvoid onCreate(Bundle savedInstanceState) {
5. ??????super.onCreate(savedInstanceState);
6. ??????setContentView(R.layout.activity_test);
7. ?
8. ??????if (savedInstanceState == null) {
9. ?????????getSupportFragmentManager().beginTransaction()
10. ???????????????.add(R.id.container, new PlaceholderFragment()).commit();
11. ??????}
12. ???}
13. ?
14. [email protected]
15. ???publicboolean onCreateOptionsMenu(Menu menu) {
16. ?
17. ??????// Inflate the menu; this adds items to the action bar if it is present.
18. ??????getMenuInflater().inflate(R.menu.test, menu);
19. ??????returntrue;
20. ???}
21. ?
22. [email protected]
23. ???publicboolean onOptionsItemSelected(MenuItem item) {
24. ??????// Handle action bar item clicks here. The action bar will
25. ??????// automatically handle clicks on the Home/Up button, so long
26. ??????// as you specify a parent activity in AndroidManifest.xml.
27. ??????int id = item.getItemId();
28. ??????if (id == R.id.action_settings) {
29. ?????????returntrue;
30. ??????}
31. ??????returnsuper.onOptionsItemSelected(item);
32. ???}
33. ?
34. ???/**
35. ????* A placeholder fragment containing a simple view.
36. ????*/
37. ???publicstaticclassPlaceholderFragment extends Fragment {
38. ?
39. ??????public PlaceholderFragment() {
40. ??????}
41. ?
42. [email protected]
43. ??????public View onCreateView(LayoutInflater inflater, ViewGroup container,
44. ????????????Bundle savedInstanceState) {
45. ?????????View rootView = inflater.inflate(R.layout.fragment_test, container,
46. ???????????????false);
47. ?????????return rootView;
48. ??????}
49. ???}
50. }

修改之後：

1. publicclass TestActivity extends Activity {
2. ?
3. [email protected]
4. ???protectedvoid onCreate(Bundle savedInstanceState) {
5. ??????super.onCreate(savedInstanceState);
6. ??????setContentView(R.layout.activity_test);
7. ???}
8. ?
9. [email protected]
10. ???publicboolean onCreateOptionsMenu(Menu menu) {
11. ?
12. ??????// Inflate the menu; this adds items to the action bar if it is present.
13. ??????getMenuInflater().inflate(R.menu.test, menu);
14. ??????returntrue;
15. ???}
16. ?
17. [email protected]
18. ???publicboolean onOptionsItemSelected(MenuItem item) {
19. ??????// Handle action bar item clicks here. The action bar will
20. ??????// automatically handle clicks on the Home/Up button, so long
21. ??????// as you specify a parent activity in AndroidManifest.xml.
22. ??????int id = item.getItemId();
23. ??????if (id == R.id.action_settings) {
24. ?????????returntrue;
25. ??????}
26. ??????returnsuper.onOptionsItemSelected(item);
27. ???}
28. }

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Android基礎環境搭建