mainActivity显示如下:
package cn.testcamera;import java.io.File;import java.text.SimpleDateFormat;import java.util.Date;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.provider.MediaStore;import android.view.View;import android.widget.Button;import android.widget.ImageView;public class MainActivity extends Activity { private Button mButton; private ImageView mImageView; private File mPhotoFile; private String mPhotoPath; public final static int CAMERA_RESULT=8888; public final static String TAG="xx"; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mButton = (Button) findViewById(R.id.button); mButton.setOnClickListener(new ButtonOnClickListener()); mImageView = (ImageView) findViewById(R.id.imageView); } private class ButtonOnClickListener implements View.OnClickListener { public void onClick(View v) { try { Intent intent = new Intent("android.media.action.IMAGE_CAPTURE"); mPhotoPath="mnt/sdcard/DCIM/Camera/"+getPhotoFileName(); mPhotoFile = new File(mPhotoPath); if (!mPhotoFile.exists()) { mPhotoFile.createNewFile(); } intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(mPhotoFile)); startActivityForResult(intent,CAMERA_RESULT); } catch (Exception e) { } } } private String getPhotoFileName() { Date date = new Date(System.currentTimeMillis()); SimpleDateFormat dateFormat = new SimpleDateFormat("'IMG'_yyyyMMdd_HHmmss"); return dateFormat.format(date) + ".jpg"; } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if (requestCode==CAMERA_RESULT) { Bitmap bitmap = BitmapFactory.decodeFile(mPhotoPath, null); mImageView.setImageBitmap(bitmap); } }}
main.xml如下:
<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" > <Button android:id="@+id/button" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="点击按钮拍照" /> <ImageView android:id="@+id/imageView" android:layout_below="@id/button" android:layout_width="fill_parent" android:layout_height="wrap_content" /></RelativeLayout>
manifest.xml如下:
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="cn.testcamera" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="10" /> <uses-permission android:name="android.permission.CAMERA"/> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <application android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name=".MainActivity" android:launchMode="singleTask" android:label="@string/title_activity_main" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application></manifest>