Java乔晓松-android中调用系统拍照功能并显示拍照的图片
android中调用系统拍照功能并显示拍照的图片
如果你是拍照完，利用onActivityResult获取data数据，把data数据转换成Bitmap数据，这样获取到的图片，是拍照的照片的缩略图
代码如下：
package com.example.myphotos;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import android.annotation.SuppressLint;
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.provider.MediaStore;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
/**
* 2013-6-27 上午10:27:23
*
* @author 乔晓松
*/
public class CameraActivity extends Activity {
private Button button;
private ImageView imageView;
private String fileName;
@SuppressLint({ "SimpleDateFormat", "SdCardPath" })
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setContentView(R.layout.activity_camera);
button = (Button) findViewById(R.id.btn_camera);
imageView = (ImageView) findViewById(R.id.imageView1);
File file = new File("/sdcard/myImage/");
file.mkdirs();// 创建文件夹
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, 1);
}
});
// Intent intent = new Intent();
// intent.setAction("android.intent.action.MAIN");
// intent.addCategory("android.intent.category.LAUNCHER");
// intent.setFlags(0x10200000);
// intent.setComponent(new ComponentName("com.android.camera",
// "com.android.camera.Camera"));
// startActivity(intent);
}
@SuppressLint({ "SdCardPath", "SimpleDateFormat" })
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == Activity.RESULT_OK) {
String sdStatus = Environment.getExternalStorageState();
if (!sdStatus.equals(Environment.MEDIA_MOUNTED)) { // 检测sd是否可用
Log.v("TestFile",
"SD card is not avaiable/writeable right now.");
return;
}
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH.mm.ss");String name = format.format(new Date());fileName = "/sdcard/myImage/" + name + ".jpg";
Bundle bundle = data.getExtras();
Bitmap bitmap = (Bitmap) bundle.get("data");// 获取相机返回的数据，并转换为Bitmap图片格式
FileOutputStream b = null;
try {
b = new FileOutputStream(fileName);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, b);// 把数据写入文件
} catch (FileNotFoundException e) {
e.printStackTrace();
} finally {
try {
b.flush();
b.close();
} catch (IOException e) {
e.printStackTrace();
}
}
imageView.setImageBitmap(bitmap);// 将图片显示在ImageView里
}
}
}
上面获取到的拍摄照片的缩略图，要想获取到拍摄照片的原图，就要在打开相机的时候，把照片保存的地址必须设置好，代码如下：
package com.example.myphotos;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import android.annotation.SuppressLint;
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.provider.MediaStore;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
/**
* 2013-6-27 上午10:27:23
*
* @author 乔晓松
*/
public class CameraActivity extends Activity {
private Button button;
private ImageView imageView;
private String fileName;
@SuppressLint({ "SimpleDateFormat", "SdCardPath" })
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setContentView(R.layout.activity_camera);
button = (Button) findViewById(R.id.btn_camera);
imageView = (ImageView) findViewById(R.id.imageView1);
File file = new File("/sdcard/myImage/");
file.mkdirs();// 创建文件夹
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
SimpleDateFormat format = new SimpleDateFormat(
"yyyy-MM-dd HH.mm.ss");
String name = format.format(new Date());
fileName = "/sdcard/myImage/" + name + ".jpg";
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT,
Uri.fromFile(new File(fileName)));
startActivityForResult(intent, 1);
}
});
// Intent intent = new Intent();
// intent.setAction("android.intent.action.MAIN");
// intent.addCategory("android.intent.category.LAUNCHER");
// intent.setFlags(0x10200000);
// intent.setComponent(new ComponentName("com.android.camera",
// "com.android.camera.Camera"));
// startActivity(intent);
}
@SuppressLint({ "SdCardPath", "SimpleDateFormat" })
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == Activity.RESULT_OK) {
String sdStatus = Environment.getExternalStorageState();
if (!sdStatus.equals(Environment.MEDIA_MOUNTED)) { // 检测sd是否可用
Log.v("TestFile",
"SD card is not avaiable/writeable right now.");
return;
}
Bundle bundle = data.getExtras();
Bitmap bitmap = (Bitmap) bundle.get("data");// 获取相机返回的数据，并转换为Bitmap图片格式
FileOutputStream b = null;
try {
b = new FileOutputStream(fileName);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, b);// 把数据写入文件
} catch (FileNotFoundException e) {
e.printStackTrace();
} finally {
try {
b.flush();
b.close();
} catch (IOException e) {
e.printStackTrace();
}
}
imageView.setImageBitmap(bitmap);// 将图片显示在ImageView里
}
}
}
布局文件代码如下：
<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"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<Button
android:id="@+id/btn_camera"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:text="@string/btn_carema" />
<ImageView
android:id="@+id/imageView1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignLeft="@+id/btn_camera"
android:layout_below="@+id/btn_camera"
android:layout_marginTop="17dp"
android:background="#999999"
tools:ignore="ContentDescription" />
</RelativeLayout>
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