如果没有实际使用这个功能的朋友一定不会注意到，在使用照相功能的时候，如果不是直接从数据库中查找图片的话，某些手机就会出现不管怎样照相返回的都是同一张图片，应该是某些手机缓存机制导致。
因此，下面的例子就是为了解决这个问题的。
希望能对遇到这种问题的朋友有帮助。
package a.test;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import android.app.Activity;
import android.content.ActivityNotFoundException;
import android.content.ContentResolver;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.view.Gravity;
import android.widget.ImageView;
import android.widget.Toast;
public class a extends Activity {
/** Called when the activity is first created. */
String SD_CARD_TEMP_DIR;
private byte[] mContent;
Bitmap myBitmap;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//
SD_CARD_TEMP_DIR = Environment.getExternalStorageDirectory() + File.separator + "tmpPhoto.jpg";
Intent takePictureFromCameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
takePictureFromCameraIntent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT,
Uri.fromFile(new File(SD_CARD_TEMP_DIR)));
startActivityForResult(takePictureFromCameraIntent, 10);
//
}
//
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
ContentResolver resolver = getContentResolver();
try {
File f = new File(SD_CARD_TEMP_DIR);
try {
Uri capturedImage = Uri.parse(android.provider.MediaStore.Images.Media.insertImage(
getContentResolver(), f.getAbsolutePath(), null, null));
// Log.i("camera", "Selected image: " +
// capturedImage.toString());
// f.delete();
Toast toast = Toast.makeText(getApplicationContext(), capturedImage.toString(), Toast.LENGTH_SHORT);
toast.setGravity(Gravity.CENTER_HORIZONTAL, 0, 0);
toast.show();
//
ImageView a = (ImageView) findViewById(R.id.imageView1);
// 将图片内容解析成字节数组
mContent = readStream(resolver.openInputStream(Uri.parse(capturedImage.toString())));
// 将字节数组转换为ImageView可调用的Bitmap对象
myBitmap = getPicFromBytes(mContent, null);
// //把得到的图片绑定在控件上显示
a.setImageBitmap(myBitmap);
//
//
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} catch (Exception e) {
// TODO: handle exception
System.out.println(e.getMessage());
}
}
//
public static Bitmap getPicFromBytes(byte[] bytes, BitmapFactory.Options opts) {
if (bytes != null)
if (opts != null)
return BitmapFactory.decodeByteArray(bytes, 0, bytes.length, opts);
else
return BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
return null;
}
//
public static byte[] readStream(InputStream inStream) throws Exception {
byte[] buffer = new byte[1024];
int len = -1;
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
while ((len = inStream.read(buffer)) != -1) {
outStream.write(buffer, 0, len);
}
byte[] data = outStream.toByteArray();
outStream.close();
inStream.close();
return data;
}
//
public static Bitmap getLoacalBitmap(String url) {
try {
FileInputStream fis = new FileInputStream(url);
return BitmapFactory.decodeStream(fis);
} catch (FileNotFoundException e) {
e.printStackTrace();
return null;
}
}
//
}