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<span style="color: rgb(0, 0, 255); font-size: 15px;"><strong>package
com.ting.textcover;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.os.SystemClock;import
android.provider.MediaStore;import
android.view.View;import
android.view.View.OnClickListener;import
android.widget.Button;import
android.widget.ImageView;/** * 调取系统相机、并将图片展示在ImageView上 * @author siva * */public
class MainActivity extends
Activity { private
Button btn ; private
ImageView image; private
String pathName; @Override protected
void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); btn = (Button) findViewById(R.id.btn); image = (ImageView) findViewById(R.id.iamgeView); pathName = Environment.getExternalStorageDirectory()+"/image.jpg"; btn.setOnClickListener(btnlistener); } private
OnClickListener btnlistener = new
OnClickListener() { @Override public
void onClick(View arg0) { // TODO Auto-generated method stub Intent intent = new
Intent(MediaStore.ACTION_IMAGE_CAPTURE); //用户设置一个临时保存文件的地址,每次都会被替换掉 Uri newFileUri = Uri.fromFile(new
File(pathName)); intent.putExtra(MediaStore.EXTRA_OUTPUT, newFileUri); startActivityForResult(intent, 1); } }; @Override protected
void onActivityResult(int
requestCode, int
resultCode, Intent data) { // TODO Auto-generated method stub if
(resultCode==RESULT_OK) { switch
(requestCode) { case
1: BitmapFactory.Options options = new
BitmapFactory.Options(); options.inJustDecodeBounds = true; //这时候decode的bitmap为null,只是宽高放到其中 Bitmap bitmap = BitmapFactory.decodeFile(pathName,options); options.inJustDecodeBounds = false; //因为是等比例缩放、因此只设置一个即可 int
be = options.outHeight/300; if(be<=0){ be=1; } options.inSampleSize = be; //缩放比例 //重新读入图片，此时的bitmap不是null值；若此处出现null ，查看pathname是否有问题 bitmap = BitmapFactory.decodeFile(pathName,options); int
withd = bitmap.getWidth(); int
height = bitmap.getHeight(); System.out.println(withd+"===="+height); image.setImageBitmap(bitmap); // 将图片保存在SD卡上 break; default: break; } } } }</strong></span> |
调取系统相机、并将图片展示在ImageView上,布布扣,bubuko.com
原文：http://www.cnblogs.com/linximeng/p/3744827.html