Android 选择图片 相册选择 马上拍照

lic class MainActivity extends Activity implements OnClickListener {

	private ImageView iv;
	private int SELECT_PICTURE = 1; // 从图库中选择图片
	private int SELECT_CAMER = 2; // 用相机拍摄照片
	private Bitmap bmp;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);

		init();

	}

	private void init() {
		iv = (ImageView) findViewById(R.id.imageView1);
		iv.setOnClickListener(this);
	}

	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		// TODO Auto-generated method stub
		super.onActivityResult(requestCode, resultCode, data);
		if (resultCode == RESULT_OK) {
			Uri uri = data.getData();
			ContentResolver cr = this.getContentResolver();
			try {
				if (bmp != null) {
					bmp.recycle();
					bmp = BitmapFactory.decodeStream(cr.openInputStream(uri));
				}
			} catch (FileNotFoundException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			iv.setImageURI(uri);
		} else {
			Toast.makeText(MainActivity.this, "选择图片失败,请重新选择", Toast.LENGTH_SHORT)
					.show();
		}
	}

	@Override
	public void onClick(View v) {
		// TODO Auto-generated method stub
		switch (v.getId()) {
		case R.id.imageView1:
			showChoosePhotoDialog();
			break;

		default:
			break;
		}
	}

	private void showChoosePhotoDialog() {
		CharSequence[] items = { "相册", "相机" };
		AlertDialog dialog = new AlertDialog.Builder(this)
				.setTitle("选择图片来源")
				.setItems(items, new DialogInterface.OnClickListener() {

					@Override
					public void onClick(DialogInterface dialog, int which) {
						// TODO Auto-generated method stub
						if (which == SELECT_PICTURE) {
							Intent intent = new Intent(
									MediaStore.ACTION_IMAGE_CAPTURE);
							startActivityForResult(intent, SELECT_CAMER);
						} else {
							Intent intent = new Intent(
									Intent.ACTION_GET_CONTENT);
							intent.addCategory(Intent.CATEGORY_OPENABLE);
							intent.setType("image/*");
							startActivityForResult(intent, SELECT_PICTURE);
						}
					}
				})
				.setNegativeButton("取消", new DialogInterface.OnClickListener() {

					@Override
					public void onClick(DialogInterface dialog, int which) {
						// TODO Auto-generated method stub
						dialog.cancel();
					}
				}).create();
		dialog.show();
	}