Bitmap的使用(二)

开启图片抓拍，同时设置存储文件名：

imageFilePath =Environment.getExternalStorageDirectory().getAbsolutePath() +"a.jpg";

Intent i = newIntent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);

i.putExtra(android.provider.MeidaStore.EXTRA_OUTPUT,imageFilePath);

用BitmapFactory.decodeFile编码图片文件

Bitmap bmp =BitmapFactory.decodeFile(iamgeFilePath);

package com.example.androidtest;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Environment;
import android.view.Display;
import android.widget.ImageView;
import android.util.Log;
import java.io.File;
public class MainActivity extends Activity {
final static int CAMERA_RESULT = 0;
ImageView imv;
String imageFilePath;
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageFilePath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/a.jpg";
File imageFile = new File(imageFilePath);
Uri imageFileUri = Uri.fromFile(imageFile);
Intent i = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
i.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, imageFileUri);
startActivityForResult(i, CAMERA_RESULT);
}
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK) {
imv = (ImageView)findViewById(R.id.ReturnedImageView);
Display currentDisplay = getWindowManager().getDefaultDisplay();
BitmapFactory.Options bmpFactoryOptions = new BitmapFactory.Options();
bmpFactoryOptions.inJustDecodeBounds = true;
Bitmap bmp = BitmapFactory.decodeFile(imageFilePath, bmpFactoryOptions);
bmpFactoryOptions.inSampleSize = 2;
bmpFactoryOptions.inJustDecodeBounds = false;
bmp = BitmapFactory.decodeFile(imageFilePath, bmpFactoryOptions);
imv.setImageBitmap(bmp);
}
}
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<ImageView android:id="@+id/ReturnedImageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"></ImageView>
</LinearLayout>

最后

以上就是复杂月饼为你收集整理的Bitmap的使用(二)的全部内容，希望文章能够帮你解决Bitmap的使用(二)所遇到的程序开发问题。

如果觉得靠谱客网站的内容还不错，欢迎将靠谱客网站推荐给程序员好友。