根据测试,书中的代码,在自己的5.1 版本的华为手机上是不能正常跑的。调用的图片并不能正确显示,在公司的4.x版本的手机上显示正常。
代码如下
package org.quentin.choosepictest;import java.io.File; import java.io.FileNotFoundException; import java.io.IOException;import android.app.Activity; 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.Menu; import android.view.MenuItem; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.ImageView;/** 经过测试,发现这些代码在公司的测试机上跑起来是没有问题的。但是在自己的5.1手机测试结果是不正常的。* 这可真是奇怪啊。学习一本书的时候,还是有一个比较稳定的版本比较好。当入门以后在通过自己查找文档,获得新特性* 在真正的项目开发中才可能事半功倍*/public class MainActivity extends Activity {public static final int TAKE_PHOTO = 1;public static final int CROP_PHOTO = 2;private Button takePhoto;private ImageView picture;private Uri imageUri; // - @Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);takePhoto = (Button)findViewById(R.id.take_photo);picture = (ImageView)findViewById(R.id.picture); // takePhoto.setText("Hello Thoto");takePhoto.setOnClickListener(new OnClickListener() { @Overridepublic void onClick(View v) {//TODO Auto-generated method stubFile 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(MediaStore.ACTION_IMAGE_CAPTURE);intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);startActivityForResult(intent, TAKE_PHOTO);}});}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {// TODO Auto-generated method stubsuper.onActivityResult(requestCode, resultCode, data);switch(requestCode){case TAKE_PHOTO:if(resultCode == RESULT_OK){Intent intent = new Intent("com.android.camera.action.CROP");intent.setDataAndType(imageUri, "image/*");intent.putExtra("scale", 1);intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);startActivityForResult(intent, CROP_PHOTO);}break;case CROP_PHOTO:if(resultCode == RESULT_OK){try{Bitmap bitmap = BitmapFactory.decodeStream(getContentResolver().openInputStream(imageUri));picture.setImageBitmap(bitmap);}catch(FileNotFoundException e){e.printStackTrace();}}break;default:break;}}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu);return true;}@Overridepublic boolean onOptionsItemSelected(MenuItem item) {// Handle action bar item clicks here. The action bar will// automatically handle clicks on the Home/Up button, so long// as you specify a parent activity in AndroidManifest.xml.int id = item.getItemId();if (id == R.id.action_settings) {return true;}return super.onOptionsItemSelected(item);} }
原因暂时还不太明白,用 Log 打印和 各种条件调试,也不正常。目前在熟悉代码阶段,暂时不深究了,标记一下,以后在深入研究一下吧。