Android——获取系统图片/拍照/获取图片路径并显示的Demo

主要问题是，在网上找到的很多Demo在Sony和丧门星上无法获取图片的真实路径，下面demo记录的方法可以显示image并获取图片路径

1. Java Code

import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.nio.charset.Charset;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.ContentResolver;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.view.Gravity;
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;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity implements OnClickListener{
private static String srcPath;
private static int RESULT_LOAD_IMAGE = 2;

private Button getPhotosBtn;
private Button takePhotoBtn;
private ImageView showImage;

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

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == Activity.RESULT_OK) {
switch(requestCode) {
//Take Photos
case 1:
Bundle extras = data.getExtras();
Bitmap b = (Bitmap) extras.get("data");
showImage.setImageBitmap(b);

String name = new SimpleDateFormat("yyyyMMddhhmmss").format(new Date());
String fileNmae = Environment.getExternalStorageDirectory().toString()+File.separator+"OCR/image/"+name+".jpg";
srcPath = fileNmae;
System.out.println(srcPath+"--save from taking photos");
File myCaptureFile =new File(fileNmae);
try {
if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){
if(!myCaptureFile.getParentFile().exists()){
myCaptureFile.getParentFile().mkdirs();
}
BufferedOutputStream bos;
bos = new BufferedOutputStream(new FileOutputStream(myCaptureFile));
b.compress(Bitmap.CompressFormat.JPEG, 80, bos);
bos.flush();
bos.close();
}else{
Toast toast= Toast.makeText(MainActivity.this, "保存失败，SD卡无效", Toast.LENGTH_SHORT);
toast.setGravity(Gravity.CENTER, 0, 0);
toast.show();
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
break;
//Load Local Photos
case 2:
Uri uri = data.getData();
showImage.setImageURI(uri);
ContentResolver cr = this.getContentResolver();
Cursor c = cr.query(uri, null, null, null, null);
c.moveToFirst();
//这是获取的图片保存在sdcard中的位置
srcPath = c.getString(c.getColumnIndex("_data"));
System.out.println(srcPath+"----------保存路径2");
break;

default:
break;
};
}

}

private void init(){
getPhotosBtn = (Button) findViewById(R.id.picturePickerButton);
takePhotoBtn = (Button) findViewById(R.id.takePhotoButton);
showImage = (ImageView) findViewById(R.id.showPicture_ImageView);

getPhotosBtn.setOnClickListener(this);
takePhotoBtn.setOnClickListener(this);
}

@Override
public void onClick(View v) {
switch(v.getId()){
case R.id.picturePickerButton:
//Important!
Intent intent = new Intent(Intent.ACTION_PICK,android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,"image/*");
startActivityForResult(intent, 2);

break;
case R.id.takePhotoButton:
Intent it = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(it, 1);
break;
}
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}

2. Layout Code

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.clare.MainActivity" >

<LinearLayout
android:id="@+id/imageView_layout"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="@color/lavenderblush">
<ImageView
android:id="@+id/showPicture_ImageView"
android:layout_height="match_parent"
android:layout_width="match_parent">
</ImageView>
</LinearLayout>
<LinearLayout
android:id="@+id/buttonsLayout"
android:layout_gravity="bottom"
android:layout_width="match_parent"
android:layout_height="30dp"
android:orientation="horizontal">
<Button
android:id="@+id/picturePickerButton"
android:layout_width="0dp"
android:layout_height="30dp"
android:layout_weight="1"
android:textColor="@color/blueviolet"
android:background="@color/white"
android:text="@string/choose_picture"/>
<Button
android:id="@+id/takePhotoButton"
android:layout_width="0dp"
android:layout_height="30dp"
android:layout_weight="1"
android:textColor="@color/blueviolet"
android:background="@color/white"
android:text="@string/take_picture"/>
</LinearLayout>
</LinearLayout>