android拍照和本地选择图片

注意：本程序是我自己写的，测试过的，可以直接运行，完全适合新手小白，是非常适合学习的实例，下载地址在下方、

新手需要注意，在AndroidManifest.xml文件中需要添加权限，否则无法程序会报错

权限：

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.INTERNET" />

下载地址：http://download.youkuaiyun.com/detail/cf8833/9283371

MainActivity.java 

package com.example.zmap;
 
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;


public class MainActivity extends Activity {
private Button bn_photo;
private Button bn_check;
private ImageView iv_photo;
private Intent intent;


private final int OPEN_RESULT = 1; // 打开照相机
private final int PICK_RESULT = 2; // 选择图片库


@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);


bn_photo = (Button) findViewById(R.id.bn_photo);
bn_check = (Button) findViewById(R.id.bn_check);
iv_photo = (ImageView) findViewById(R.id.iv_photo);


bn_photo.setOnClickListener(new OnClickListener() {


@Override
public void onClick(View v) {
// TODO Auto-generated method stub
intent = new Intent(
android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, OPEN_RESULT);
}
});


bn_check.setOnClickListener(new OnClickListener() {


@Override
public void onClick(View v) {
// TODO Auto-generated method stub
intent = new Intent(
Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(intent, PICK_RESULT);
}
});
}


@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case OPEN_RESULT:
if (resultCode == RESULT_OK) {
Bundle bundle = data.getExtras();
Bitmap bitmap = (Bitmap)bundle.get("data");
iv_photo.setImageBitmap(bitmap);
}
break;
case PICK_RESULT:
if (resultCode == RESULT_OK) {
Uri uri = data.getData();
iv_photo.setImageURI(uri);
}
break;
default:
break;
}


}


}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp"
        android:gravity="center"
        android:orientation="horizontal" >


        <Button
            android:id="@+id/bn_photo"
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content"
            android:text="拍照" />


        <Button
            android:id="@+id/bn_check"
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content"
            android:text="本地" />
    </LinearLayout>


    <ImageView
        android:id="@+id/iv_photo"
        android:layout_width="200dp"
        android:layout_height="200dp"
        android:layout_marginTop="20dp"
        android:layout_gravity="center"
        android:src="@drawable/ic_launcher" />


</LinearLayout>