照相机

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通过隐式意图来打开照相机

<LinearLayout 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:orientation="vertical"
    tools:context=".MainActivity" >

    <Button
        android:onClick="click"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="拍照" />

    <ImageView 
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/iv"
        />
</LinearLayout>

package com.itheima.camera;

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.view.View;
import android.widget.ImageView;

public class MainActivity extends Activity {
	private ImageView iv;
	private File file ;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		iv = (ImageView) findViewById(R.id.iv);
	}

	//打开的是前置摄像头
	public void click(View view) {
		Intent intent = new Intent();
		// 指定拍照的意图。
//		MediaStore.ACTION_VIDEO_CAPTURE是录像的意图
		intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
		file =  new File(Environment.getExternalStorageDirectory(),System.currentTimeMillis()+".jpg");
		intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(file)); // 指定保存文件的路径
		startActivityForResult(intent, 100);												
	}
	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		if(requestCode==100){
			iv.setImageURI(Uri.fromFile(file));
		}
		super.onActivityResult(requestCode, resultCode, data);
	}
}

照相机

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原文地址：http://my.oschina.net/u/2356176/blog/420338