android实现简单拍照功能实现简单拍照功能
拍照可以调用系统的相机进行拍照,拍完保存到相应的SD卡目录。最近要用到拍照这个功能,首先试了下调用相机拍照,保存到相应目录,然后
用imageview显示的时候感觉,很模糊。可能是图片被压缩的太狠了。所以自己使用Camera写了一个拍照的功能,拍出来的还挺清晰的,不过文
件有点大一张图片差不多1.7M。如果想拍高清图可以使用下面的代码。
代码很简单,我就不做过多解释了。
package com.example.testsimple;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Date;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Environment;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.PixelFormat;
import android.hardware.Camera;
import android.text.format.DateFormat;
import android.util.Log;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
public class MainActivity extends Activity {
private SurfaceView surfaceView;
private SurfaceHolder surfaceHolder;
private Camera camera;
private File picture;
private Button btnSave;
private final static String TAG = "CameraActivity";
private ImageView open_picIcon;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
/* Intent intent=new Intent(MainActivity.this,MyCameraActivity.class);
startActivity(intent);
finish();*/
setupViews();
}
private void setupViews(){
surfaceView = (SurfaceView) findViewById(R.id.camera_preview); // Camera interface to instantiate components
surfaceHolder = surfaceView.getHolder(); // Camera interface to instantiate components
surfaceHolder.addCallback(surfaceCallback); // Add a callback for the SurfaceHolder
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
btnSave = (Button) findViewById(R.id.save_pic);
open_picIcon=(ImageView) findViewById(R.id.open_picIcon);
btnSave.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
surfaceView.setVisibility(View.VISIBLE);
open_picIcon.setVisibility(View.GONE);
takePic();
}
});
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_CAMERA