android 怎么调用系统相机

如题所述

这个很简单的，百度到处都有答案：
public class MainActivity extends Activity {
/** Called when the activity is first created. */
private Button button;
private ImageView view;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button = (Button) findViewById(R.id.button1);
view= (ImageView)findViewById(R.id.imageView1);
button.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, 1);
}
});
}

@SuppressLint("SdCardPath")
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
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.i("TestFile",
"SD card is not avaiable/writeable right now.");
return;
}
new DateFormat();
String name = DateFormat.format("yyyyMMdd_hhmmss",Calendar.getInstance(Locale.CHINA)) + ".jpg";
Toast.makeText(this, name, Toast.LENGTH_LONG).show();
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;
File file = new File("/sdcard/Image/");
file.mkdirs();// 创建文件夹
String fileName = "/sdcard/Image/"+name;

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();
}
}
try
{
view.setImageBitmap(bitmap);// 将图片显示在ImageView里
}catch(Exception e)
{
Log.e("error", e.getMessage());
}

}
}
}

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