Android 2.1 GPS定位和拍照功能代碼

1、GPS功能代碼

1. private void getLocation()
2. {
3. LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
4. locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,
5. 200, 0, locationListener);
7. }
8. private final LocationListener locationListener = new LocationListener() {
9. public void onLocationChanged(Location location) { //當坐標改變時觸發此函數，如果Provider傳進相同的坐標，它就不會被觸發
10. // log it when the location changes
11. if (location != null) {
12. Lat.setText(String.valueOf(location.getLatitude()));
13. Lon.setText(String.valueOf(location.getLongitude()));
15. }
16. }
18. public void onProviderDisabled(String provider) {
19. // Provider被disable時觸發此函數，比如GPS被關閉
20. }
22. public void onProviderEnabled(String provider) {
23. // Provider被enable時觸發此函數，比如GPS被打開
24. }
26. public void onStatusChanged(String provider, int status, Bundle extras) {
27. // Provider的轉態在可用、暫時不可用和無服務三個狀態直接切換時觸發此函數
28. }
29. };

2、拍照功能代碼

1. public void onCreate(Bundle savedInstanceState) {
2. super.onCreate(savedInstanceState);
3. // Hide the window title.
4. requestWindowFeature(Window.FEATURE_NO_TITLE);
6. setContentView(R.layout.main);
7. imageView = (ImageView) this.findViewById(R.id.iv1);
8. Button button = (Button) this.findViewById(R.id.bt1);
9. button.setOnClickListener(new OnClickListener() {
10. public void onClick(View v) {
11. Intent intent = new Intent("Android.media.action.IMAGE_CAPTURE");
12. intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri
13. .fromFile(new File(Environment
14. .getExternalStorageDirectory(), "temp.jpg")));
15. intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 0);
16. startActivityForResult(intent, 0);
17. }
18. });
20. }
21. @Override
22. protected void onActivityResult(int requestCode, int resultCode, Intent data) {
23. if (requestCode == 0 && resultCode == Activity.RESULT_OK) {
24. this.imageView.setImageDrawable(Drawable.createFromPath(new File(
25. Environment.getExternalStorageDirectory(), "temp.jpg")
26. .getAbsolutePath()));
28. }
29. }

3、退出程序確認

1. public boolean onKeyDown(int keyCode, KeyEvent event) {
3. //按下鍵盤上返回按鈕
4. if(keyCode == KeyEvent.KEYCODE_BACK){
5. new AlertDialog.Builder(Main.this)
6. // Main.this視情況而定，這個一般是指當前顯示的Activity對應的XML視窗。
7. .setTitle("")// 設置對話框的標題
8. .setMessage(" 確定退出? ")// 設置對話框的內容
9. .setPositiveButton("確定",// 設置對話框的確認按鈕
10. new DialogInterface.OnClickListener() {// 設置確認按鈕的事件
11. public void onClick(DialogInterface dialog, int which) {
12. //退出程序
13. android.os.Process.killProcess(android.os.Process.myPid());
14. }})
15. .setNegativeButton("取消",// 設置對話框的取消按鈕
16. new DialogInterface.OnClickListener() {// 設置取消按鈕的事件
17. public void onClick(DialogInterface dialog, int which) {
18. // 如果你什麼操作都不做，可以選擇不寫入任何代碼
19. dialog.cancel();
20. }}
21. ).show();
23. return true;
24. }else{
25. return super.onKeyDown(keyCode, event);
26. }
27. }