android系統如何調用自帶的相機相冊

android系統如何調用系統自帶的相冊和相機簡單的代碼：

1)第一種調用的方法相關代碼：

<strong><span style="font-size:18px;">import java.io.IOException;

import com.example.photo.R;
import com.example.photo.ui.utils.PhotoUtils;

import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.text.TextUtils;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Bitmap;

public class MainActivity extends Activity implements OnClickListener{

	private Button bt_select;

	private ImageView iv_select_images;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		iv_select_images = (ImageView) findViewById(R.id.iv_select_images);
		bt_select = (Button) findViewById(R.id.bt_select);
		bt_select.setOnClickListener(this);
	}
	@Override
	public void onClick(View v) {
		//選擇的item
		final CharSequence[] items = {"相冊","拍照"};
		AlertDialog dlg = new AlertDialog.Builder(MainActivity.this).setTitle("選擇照片").setItems(items, 
				new DialogInterface.OnClickListener() {

			@Override
			public void onClick(DialogInterface dialog, int which) {
				//這裏item是根據選擇的方式，在item數組裏邊定義了兩種方式，拍照的下標爲1所以就調用拍照的方法
				if(which==1){
					//調用android自帶的照相機
					Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
//					Uri photoUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
					startActivityForResult(intent, 1);
				}else{
					//調用android的圖庫  兩種方法都可以  
					//第一種
//					Intent i = new Intent(Intent.ACTION_PICK,android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
//					startActivityForResult(i, 2);
					//第二種
					Intent i = new Intent(Intent.ACTION_GET_CONTENT);
					i.addCategory(Intent.CATEGORY_OPENABLE);
					i.setType("image/*");
					startActivityForResult(i, 2);
				}
			}
		}).create();

		dlg.show();
		
	}

	/**
	 * 圖片選取的相關代碼
	 */
	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		super.onActivityResult(requestCode, resultCode, data);
		//完成照相後回調用此方法
		//判斷是否成功
		if(resultCode==MainActivity.RESULT_OK){
			//調用讀取手機內存圖片
			if(requestCode==2){
				Uri address = data.getData();
				if(!TextUtils.isEmpty(address.toString())){
					iv_select_images.setImageURI(address);
				}else{
					//用BitmapFactory去加載拍照前指定的路徑位置的圖片
					Bitmap bitmap;
					try {
						bitmap = PhotoUtils.revitionImageSize(address.toString());
						iv_select_images.setImageBitmap(bitmap);
					} catch (IOException e) {
						e.printStackTrace();
					}
				}
			}else if(requestCode==1){
				//				調用本地相機拍照
				Bundle bundle = data.getExtras();
				//獲取相機返回的數據，並轉換成bitmap的圖片格式
				Bitmap photo = bundle.getParcelable("data");
				iv_select_images.setImageBitmap(photo);
			}
		}
	}
	
	
	
}</span></strong>

佈局文件：

<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"
    tools:context=".MainActivity" >


    <Button
        android:id="@+id/bt_select"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:background="#7Ab900"
        android:text="打開" />


    <ImageView
        android:id="@+id/iv_select_images"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:src="@drawable/ic_launcher" />

</RelativeLayout>

2）第二種方法

package com.example.photo.ui;


import java.io.IOException;


import com.example.photo.R;
import com.example.photo.ui.utils.PhotoUtils;


import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;


public class SecondActivity  extends Activity{


private Button bt_select1,bt_select2;
private ImageView iv_select_images1;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);
//初始化佈局
setupView();
//設置點擊事件
setupClick();
}
private void setupView() {
bt_select1 = (Button) findViewById(R.id.bt_select1);
bt_select2 = (Button) findViewById(R.id.bt_select2);
iv_select_images1 = (ImageView) findViewById(R.id.iv_select_images1);
}
private void setupClick() {
bt_select1.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
//調用android自帶的相機
Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
intent.addCategory(Intent.CATEGORY_DEFAULT);
startActivityForResult(intent, 1);
}
});

bt_select2.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("image/*");
startActivityForResult(i, 2);
}
});
}
/**
* 圖片選取的相關代碼
*/
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
//完成照相後回調用此方法
//判斷是否成功
if(resultCode==SecondActivity.RESULT_OK){
//調用讀取手機內存圖片
if(requestCode==2){
Uri address = data.getData();
if(!TextUtils.isEmpty(address.toString())){
iv_select_images1.setImageURI(address);
}else{
//用BitmapFactory去加載拍照前指定的路徑位置的圖片
Bitmap bitmap;
try {
bitmap = PhotoUtils.revitionImageSize(address.toString());
iv_select_images1.setImageBitmap(bitmap);
} catch (IOException e) {
e.printStackTrace();
}
}
}else if(requestCode==1){
//調用本地相機拍照
Bundle bundle = data.getExtras();
//獲取相機返回的數據，並轉換成bitmap的圖片格式
Bitmap photo = bundle.getParcelable("data");
iv_select_images1.setImageBitmap(photo);
}
}
}
}

佈局文件：

<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"
    tools:context=".MainActivity" >


    <Button
        android:id="@+id/bt_select1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:background="#7Ab900"
        android:text="打開" />


    <ImageView
        android:id="@+id/iv_select_images1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:src="@drawable/ic_launcher" />


    <Button
        android:id="@+id/bt_select2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_toLeftOf="@+id/iv_select_images1"
        android:background="#7Ab900"
        android:text="相冊" />


</RelativeLayout>