android两种使用照相功能获取图片的方法

两种方法，一种是直接调用系统的照相Intent，使用onActivityResult获取图片资源；一种是用SurfaceView自己控制界 面。两种各有优缺点，前一种直接使用系统照相程序，会自带了很多系统功能，比如焦距调节，闪光灯调节之类的。后一种可以自定义界面，添加些自己需要增加的 功能。但竖屏拍照的预览照片角度不对。

代码如下：

第一种：

package com.photo;

import java.io.File;

import android.app.Activity;

import android.content.Intent;

import android.net.Uri;

import android.os.Bundle;

import android.os.Environment;

import android.provider.MediaStore;

import android.util.Log;

public class PhotographActivity extends Activity {

/** Called when the activity is first created. */

private String logTag = “Exception”;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

//        setContentView(R.layout.main);

try {

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

File out = new File(Environment.getExternalStorageDirectory(), “camera.jpg”);

Uri uri = Uri.fromFile(out);

intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);

startActivityForResult(intent, 0);

} catch (Exception e) {

e.printStackTrace();

}

}

protected void onActivityResult(int requestCode, int resultCode, Intent data)

{

try {

Log.v(“”, “requestCode = “+requestCode+” resultCode =  ”+resultCode);

if (requestCode != 0) {

return;

}

if (resultCode==0) {

finish();

return;

}

//     Bundle extras = data.getExtras();

//     Bitmap b = (Bitmap) extras.get(“data”);

Intent intent = new Intent();

intent.setClass(this, ShowImageActivity.class);

//     intent.putExtra(“image”,b);

this.startActivity(intent);

} catch (Exception e) {

// TODO: handle exception

Log.v(logTag, e.getMessage());

}

}

}

另一个activity：

package com.photo;

import android.app.Activity;

import android.app.AlertDialog;

import android.content.DialogInterface;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.os.Bundle;

import android.os.Environment;

import android.util.Log;

import android.view.MotionEvent;

import android.widget.ImageView;

public class ShowImageActivity extends Activity {

private String logTag = “exception”;

private AlertDialog  alertDialog;

private ImageView view;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.show);

try {

view = (ImageView) findViewById(R.id.view);

// Bundle bundle = this.getIntent().getExtras();

// Bitmap b = bundle.getParcelable(“image”);

String pathString = Environment.getExternalStorageDirectory().toString() + “/camera.jpg”;

Log.v(“”, “pathString = “+pathString);

Bitmap b = BitmapFactory.decodeFile(pathString);

view.setImageBitmap(b);

//setContentView(view);

alertDialog = new AlertDialog.Builder(ShowImageActivity.this)

.setMessage(“Feels Like IS感觉就像IS尽量晃动手机，体验IS的无限动感。”)

.setPositiveButton(“ok”, new DialogInterface.OnClickListener() {

public void onClick(DialogInterface dialog, int whichButton) {

/* User clicked OK so do some stuff */

}

})

.setNegativeButton(“cancle”, new DialogInterface.OnClickListener() {

public void onClick(DialogInterface dialog, int whichButton) {

/* User clicked Cancel so do some stuff */

}

})

.create();

alertDialog.show();

} catch (Exception e) {

Log.v(logTag, e.getMessage());

throw new RuntimeException(e);

}

}

@Override

public boolean onTouchEvent(MotionEvent event) {

// TODO Auto-generated method stub

Log.v(“”, “event = “+event.getX());

return super.onTouchEvent(event);

}

}

 

第二种：

 

package com.zxhwolfe.feelslike;

import java.io.IOException;

import android.app.Activity;

import android.content.pm.ActivityInfo;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.graphics.PixelFormat;

import android.hardware.Camera;

import android.hardware.Camera.AutoFocusCallback;

import android.hardware.Camera.Parameters;

import android.hardware.Camera.PictureCallback;

import android.hardware.Camera.ShutterCallback;

import android.os.Bundle;

import android.util.Log;

import android.view.KeyEvent;

import android.view.SurfaceHolder;

import android.view.SurfaceView;

import android.view.View;

import android.view.Window;

import android.view.WindowManager;

import android.view.SurfaceHolder.Callback;

import android.view.View.OnClickListener;

import android.widget.ImageView;

public class FeelsLike extends Activity implements Callback, OnClickListener {

/** Called when the activity is first created. */

private SurfaceView mSurfaceView;

private SurfaceHolder mSurfaceHolder;

private Camera mCamera;

private boolean mPreviewRunning;

private ImageView mImageView;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

this.requestWindowFeature(Window.FEATURE_NO_TITLE);

getWindow().setFormat(PixelFormat.TRANSLUCENT);

getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,

WindowManager.LayoutParams.FLAG_FULLSCREEN);

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);

setContentView(R.layout.main);

mSurfaceView = (SurfaceView) findViewById(R.id.camera);

mImageView = (ImageView) findViewById(R.id.image);

mImageView.setVisibility(View.GONE);

mSurfaceView.setOnClickListener(this);

mSurfaceHolder = mSurfaceView.getHolder();

mSurfaceHolder.addCallback(this);

mSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

}

@Override

public void surfaceChanged(SurfaceHolder holder, int format, int width,

int height) {

if (mPreviewRunning) {

mCamera.stopPreview();

}

Parameters params = mCamera.getParameters();

params.setPictureFormat(PixelFormat.JPEG);// 设置图片格式

// params.setPreviewSize(width, height);

params.set(“rotation”,90);

mCamera.setParameters(params);

try {

mCamera.setPreviewDisplay(holder);

} catch (IOException e) {

e.printStackTrace();

}

mCamera.startPreview();

mPreviewRunning = true;

}

private AutoFocusCallback mAutoFocusCallBack = new AutoFocusCallback() {

@Override

public void onAutoFocus(boolean success, Camera camera) {

Log.v(“AutoFocusCallback”, “AutoFocusCallback”+success);

Camera.Parameters Parameters = mCamera.getParameters();

Parameters.setPictureFormat(PixelFormat.JPEG);// 设置图片格式

mCamera.setParameters(Parameters);

mCamera.takePicture(mShutterCallback, null, mPictureCallback);

}

};

@Override

public void surfaceCreated(SurfaceHolder holder) {

// TODO Auto-generated method stub

mCamera = Camera.open();

}

@Override

public void surfaceDestroyed(SurfaceHolder holder) {

// TODO Auto-generated method stub

mCamera.stopPreview();

mPreviewRunning = false;

mCamera.release();

mCamera = null;

}

/**

* 拍照的回调接口

*/

PictureCallback mPictureCallback = new PictureCallback() {

@Override

public void onPictureTaken(byte[] data, Camera camera) {

Log.v(“PictureCallback”, “…onPictureTaken…”);

if (data != null) {

Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0,

data.length);

mImageView.setImageBitmap(bitmap);

mImageView.setVisibility(View.VISIBLE);

mSurfaceView.setVisibility(View.GONE);

if (mPreviewRunning) {

mCamera.stopPreview();

mPreviewRunning = false;

}

}

}

};

/**

* 在相机快门关闭时候的回调接口，通过这个接口来通知用户快门关闭的事件，

* 普通相机在快门关闭的时候都会发出响声，根据需要可以在该回调接口中定义各种动作， 例如：使设备震动

*/

ShutterCallback mShutterCallback = new ShutterCallback() {

public void onShutter() {

//just log ,do nothing

Log.v(“ShutterCallback”, “…onShutter…”);

}

};

public boolean onKeyDown(int keyCode, KeyEvent event) {

if(keyCode==KeyEvent.KEYCODE_DPAD_CENTER){

if(mCamera !=null){

// mCamera.takePicture(null, null,mPictureCallback);

mCamera.autoFocus(mAutoFocusCallBack);

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);

}

}

return super.onKeyDown(keyCode, event);

}

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

Log.v(“onClick”, “…onClick…”);

mCamera.autoFocus(mAutoFocusCallBack);

}

}

<?xml version=”1.0″ encoding=”utf-8″?>

<LinearLayout xmlns:android=”http://schemas.android.com/apk/res/android”

android:orientation=”vertical”

android:layout_width=”fill_parent”

android:layout_height=”fill_parent”

>

<SurfaceView android:id=”@+id/camera”

android:layout_width=”fill_parent”

android:layout_height=”fill_parent”/>

<ImageView android:id=”@+id/image”

android:layout_width=”fill_parent”

android:layout_height=”fill_parent”/>

</LinearLayout>