package com.example;import java.io.File;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.os.Environment;
import android.view.Display;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;public class MainActivity extends Activity {final static int CAMERA_RESULT = 0;ImageView imv;Button but;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.fragment_main);findViewById();

but.setOnClickListener(new OnClickListener() {public void onClick(View v) {

                               /*运行Camera内置摄像头意图*/Intent i = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);startActivityForResult(i, CAMERA_RESULT);}});}private void findViewById() {but = (Button) findViewById(R.id.but);imv = (ImageView) findViewById(R.id.img);}/* 当activity运行完后，就显示照片*/

  @Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);if (resultCode == RESULT_OK) {Bundle bundle = data.getExtras();Bitmap bmp = (Bitmap) bundle.get("data");imv.setImageBitmap(bmp);}}}

AndroidManifest.xml 配置

<applicationandroid:allowBackup="true"android:icon="@drawable/ic_launcher"android:label="@string/app_name"android:theme="@style/AppTheme" ><activityandroid:name="com.example.MainActivity"android:label="@string/app_name" ><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter></activity></application>

activity_main.xml 配置

<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"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin" ><ImageView android:id="@+id/img"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentTop="true"android:layout_centerInParent="true"/><Button android:id="@+id/but"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_below="@id/img"android:layout_centerInParent="true"android:text="take_a_picture"/></RelativeLayout>