1. 得到一個button並新增事件，先建立一個檔案，然後用Intent通過 “android.media.action.IMAGE_CAPTURE”，呼叫攝像頭。

File outputImage = new File(Environment
.getExternalStorageDirectory(), "tempImage.jpg");
try {
if (outputImage.exists()) {
outputImage.delete();
}
outputImage.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
imageUri = Uri.fromFile(outputImage);
Intent intent = new Intent(
"android.media.action.IMAGE_CAPTURE");
intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
startActivityForResult(intent, TAKE_PHOTO);

2. 將得到的照片，顯示在ImageView （picture）中

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
Bitmap bitmap = BitmapFactory
.decodeStream(getContentResolver().openInputStream(
imageUri));
picture.setImageBitmap(bitmap);
}