android調用系統相機拍照並儲存在本地

標籤：android 相機 拍照 儲存圖片到本

import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.util.Calendar;import java.util.Locale;import android.annotation.SuppressLint;import android.app.Activity;import android.content.Intent;import android.graphics.Bitmap;import android.os.Bundle;import android.os.Environment;import android.provider.MediaStore;import android.text.format.DateFormat;import android.util.Log;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ImageView;import android.widget.Toast;@SuppressLint("SdCardPath")public class MainActivity extends Activity {/** Called when the activity is first created. */private Button button;private ImageView view;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);button = (Button) findViewById(R.id.button1);view= (ImageView)findViewById(R.id.imageView1);button.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubIntent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);startActivityForResult(intent, 1);}});}@SuppressLint("SdCardPath")@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {// TODO Auto-generated method stubsuper.onActivityResult(requestCode, resultCode, data);if (resultCode == Activity.RESULT_OK) {String sdStatus = Environment.getExternalStorageState();if (!sdStatus.equals(Environment.MEDIA_MOUNTED)) { // 檢測sd是否可用Log.i("TestFile","SD card is not avaiable/writeable right now.");return;}new DateFormat();String name = DateFormat.format("yyyyMMdd_hhmmss",Calendar.getInstance(Locale.CHINA)) + ".jpg";Toast.makeText(this, name, Toast.LENGTH_LONG).show();Bundle bundle = data.getExtras();Bitmap bitmap = (Bitmap) bundle.get("data");// 擷取相機返回的資料，並轉換為Bitmap圖片格式FileOutputStream b = null;   File file = new File("/sdcard/Image/");file.mkdirs();// 建立檔案夾String fileName = "/sdcard/Image/"+name;try {b = new FileOutputStream(fileName);bitmap.compress(Bitmap.CompressFormat.JPEG, 100, b);// 把資料寫入檔案} catch (FileNotFoundException e) {e.printStackTrace();} finally {try {b.flush();b.close();} catch (IOException e) {e.printStackTrace();}}try{view.setImageBitmap(bitmap);// 將圖片顯示在ImageView裡}catch(Exception e){Log.e("error", e.getMessage());}}}}

xml檔案

<RelativeLayout 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: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=".MainActivity" >    <ImageView        android:id="@+id/imageView1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentLeft="true"        android:src="@drawable/ic_launcher" />    <Button        android:id="@+id/button1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentBottom="true"        android:layout_centerHorizontal="true"        android:layout_marginBottom="15dp"        android:text="Button" /></RelativeLayout>

最後要記得加許可權

<!-- 在SDCard中建立與刪除檔案許可權 -->
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
<!-- 往SDCard寫入資料許可權 -->
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
  <uses-feature android:name = "android.hardware.camera" />
<uses-feature android:name = "android.hardware.camera.autofocus" />