相册切换头像

package com.example.day07_cream_demo;

import java.io.File;

import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.os.IInterface;
import android.provider.MediaStore;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ImageView;

public class MainActivity extends Activity {

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


//设置点击监听
public void opencamera(View v){
		//打开相册
		Intent intent = new Intent(Intent.ACTION_PICK);
		//设置类型
		intent.setType("image/*");
		startActivityForResult(intent, 1000);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
	// TODO Auto-generated method stub
	super.onActivityResult(requestCode, resultCode, data);

	    	if(requestCode == 1000 && resultCode == RESULT_OK){
	    		//得到相册的路径
	    		Uri uri = data.getData();
	    		//调取裁剪功能
	    		Intent it = new Intent("com.android.camera.action.CROP");
	    		//设置图片 去到图片
	    		it.setDataAndType(uri, "image/*");
	    		//设置是否支持裁剪
	    		it.putExtra("CROP", true);
	    		//设置框高比
	    		it.putExtra("aspectX", 1);
	    		it.putExtra("aspectY", 1);
	    		//设置图片输出的大小
	    		it.putExtra("outputX", 250);
	    		it.putExtra("outputY", 250);
	    		//将图片返回更给data
	    		it.putExtra("return-data", true);
	    		startActivityForResult(it, 2000);
	    		
	    	}
	    	
	    	//接受裁剪好的图片
	    	if(requestCode == 2000 && resultCode == RESULT_OK){
	    		
	    		Bitmap bitmap = data.getParcelableExtra("data");
	    		imageView.setImageBitmap(bitmap);
	    		
	    	}
	    	




}

}