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android调用系统相机拍照

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mainactivity.java
public class MainActivity extends AppCompatActivity {private ImageView iv; private static final int PHOTO_GRAPH = 1; // 拍照 private static final int PHOTO_SELECT = 2; private static final int PHOTO_RESOULT = 3; // 结果 private static final String IMAGE_UNSPECIFIED = "image/*"; private Uri outputFileUri; Bitmap bitmap; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); iv = (ImageView) findViewById(R.id.iv); }public void takePhoto(View v){ File file = new File( Environment.getExternalStorageDirectory().getAbsolutePath(), "temp.jpg"); outputFileUri = Uri.fromFile(file); Intent intent = new Intent(); intent.setAction("android.media.action.IMAGE_CAPTURE"); intent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri); startActivityForResult(intent, PHOTO_GRAPH); // overridePendingTransition(R.animator.in,R.animator.out); } //实现从相册选取 public void selectPhoto(View v){ Intent intent = new Intent(Intent.ACTION_GET_CONTENT); intent.setType("image/*"); startActivityForResult(intent, PHOTO_SELECT); }protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (resultCode == RESULT_OK) { if(requestCode==PHOTO_SELECT){ if (data =https://www.it610.com/article/= null){ return; }else{ //用户从图库选择图片后会返回所选图片的Uri Uri uri; //获取到用户所选图片的Uri uri = data.getData(); ///bitmap = Bitmpcompress.compressBitmap(this,uri,iv); iv.setImageBitmap(bitmap); // saveBitmap(); } } if (requestCode == PHOTO_GRAPH) { // 设置文件保存路径 if (data != null) {; Bitmap thumbnail = data.getParcelableExtra("data"); iv.setImageBitmap(thumbnail); } else { int width = iv.getWidth(); int height = iv.getHeight(); BitmapFactory.Options faOptions = new BitmapFactory.Options(); faOptions.inJustDecodeBounds = true; BitmapFactory.decodeFile(outputFileUri.getPath(), faOptions); int imagewidth = faOptions.outWidth; int imageheight = faOptions.outHeight; //确定将图缩小多少！ int scaleFactor = Math.min(imagewidth / width, imageheight / height); faOptions.inJustDecodeBounds = false; faOptions.inSampleSize = scaleFactor; faOptions.inPurgeable = true; bitmap = BitmapFactory.decodeFile(outputFileUri.getPath(), faOptions); iv.setImageBitmap(bitmap); } } } else { Log.i("gsg", "nonononono"); } super.onActivityResult(requestCode, resultCode, data); }}

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