本文实例为大家讲解如何轻松实现Android手机拍照功能，分享给大家供大家参考。具体如下：

一、布局文件main.xml

<?xml version="1.0" encoding="utf-8"?><FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" > <SurfaceView android:id="@+id/surfaceView" android:layout_width="fill_parent" android:layout_height="fill_parent" /> <RelativeLayout android:id="@+id/buttonlayout" android:layout_width="fill_parent" android:layout_height="fill_parent" android:visibility="gone" > <Button android:id="@+id/takepicture" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_alignParentRight="true" android:layout_marginRight="5dp" android:onClick="takepicture" android:text="@string/takepicture" /> <Button android:id="@+id/autofocus" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignTop="@id/takepicture" android:layout_marginRight="20dp" android:layout_toLeftOf="@id/takepicture" android:onClick="takepicture" android:text="@string/autofocus" /> </RelativeLayout></FrameLayout>

二、MainActivity.java

import java.io.File;import java.io.FileOutputStream;import android.app.Activity;import android.hardware.Camera;import android.hardware.Camera.PictureCallback;import android.os.Bundle;import android.os.Environment;import android.view.MotionEvent;import android.view.SurfaceHolder;import android.view.SurfaceHolder.Callback;import android.view.SurfaceView;import android.view.View;import android.view.ViewGroup;import android.view.Window;import android.view.WindowManager;public class MainActivity extends Activity { private View layout; private Camera camera; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); setContentView(R.layout.main); layout = this.findViewById(R.id.buttonlayout); SurfaceView surfaceView = (SurfaceView) this .findViewById(R.id.surfaceView); surfaceView.getHolder() .setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); surfaceView.getHolder().setFixedSize(176, 144); surfaceView.getHolder().setKeepScreenOn(true); surfaceView.getHolder().addCallback(new SurfaceCallback()); } public void takepicture(View v) { if (camera != null) { switch (v.getId()) { case R.id.takepicture: camera.takePicture(null, null, new MyPictureCallback()); break; case R.id.autofocus: camera.autoFocus(null); break; } } } private final class MyPictureCallback implements PictureCallback { public void onPictureTaken(byte[] data, Camera camera) { try { File jpgFile = new File( Environment.getExternalStorageDirectory(), System.currentTimeMillis() + ".jpg"); FileOutputStream outStream = new FileOutputStream(jpgFile); outStream.write(data); outStream.close(); camera.startPreview(); } catch (Exception e) { e.printStackTrace(); } } } private final class SurfaceCallback implements Callback { public void surfaceCreated(SurfaceHolder holder) { try { camera = Camera.open();// 打开摄像头 Camera.Parameters parameters = camera.getParameters(); // Log.i("MainActivity", parameters.flatten()); parameters.setPreviewSize(800, 480); parameters.setPreviewFrameRate(5); parameters.setPictureSize(1024, 768); parameters.setJpegQuality(80); camera.setParameters(parameters); camera.setPreviewDisplay(holder); camera.startPreview();// 开始预览 } catch (Exception e) { e.printStackTrace(); } } public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { } public void surfaceDestroyed(SurfaceHolder holder) { if (camera != null) { camera.release(); camera = null; } } } @Override public boolean onTouchEvent(MotionEvent event) { if (event.getAction() == MotionEvent.ACTION_DOWN) { layout.setVisibility(ViewGroup.VISIBLE); return true; } return super.onTouchEvent(event); }}

三、添加权限

<uses-permission android:name="android.permission.CAMERA" /> <!-- 在SDCard中创建与删除文件权限 --> <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" /> <!-- 往SDCard写入数据权限 --> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

效果如下：

希望本文所述对大家学习Android软件编程有所帮助。