android照片拍照,android拍照并保存照片(照相)
【实例简介】一款照相机软件
【实例截图】
【核心代码】
package app.ui;
import android.app.Activity;
import android.content.ContentValues;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Toast;
public class MainActivity extends Activity implements OnClickListener {
private EditText mETphotoName;
private EditText mETmodel;
private ImageView mImage;
private Uri mPhotoUri; //拍照后的uri
public static final int REQUEST_CODE_TAKE_PICTURE = 3; //拍照显示图片
private String mPhotoName;
private String mModel;
private Bitmap bitmap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setUpViews();
}
private void setUpViews(){
setContentView(R.layout.activity_main);
mETphotoName = (EditText)findViewById(R.id.et_photoname);
mETmodel = (EditText)findViewById(R.id.et_model);
mImage = (ImageView)findViewById(R.id.image);
}
/* (non-Javadoc)
* @see android.view.View.OnClickListener#onClick(android.view.View)
*/
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_getphoto:
mPhotoName = mETphotoName.getEditableText().toString();
mModel = mETmodel.getEditableText().toString();
if(TextUtils.isEmpty(mPhotoName) || TextUtils.isEmpty(mModel)){
Toast.makeText(this,"请输入图片名称和型号",0).show();
return;
}
final String state = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED.equals(state)) {
final Intent takePictureImIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
ContentValues values = new ContentValues();
mPhotoUri = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
takePictureImIntent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, mPhotoUri);
startActivityForResult(takePictureImIntent,REQUEST_CODE_TAKE_PICTURE);
} else {
Toast.makeText(this,"请检查内存卡", 0).show();
}
break;
default:
break;
}
}
/* (non-Javadoc)
* @see android.app.Activity#onActivityResult(int, int, android.content.Intent)
*/
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case REQUEST_CODE_TAKE_PICTURE:
// 通过照相获取图片
if (resultCode == Activity.RESULT_OK) {
final Uri uri = mPhotoUri;
Log.e("MainActivity",uri "");
if (uri != null) {
processPicture(uri);
}
//提示保存图片
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("提示");
builder.setMessage("是否需要保存图片？");
builder.setNegativeButton("取消", null);
builder.setPositiveButton("是的", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
String resetPhotoName = mPhotoName "_" mModel "_" Utils.getRandomString(4);
Utils.savePhotoToSDCard(bitmap,Utils.genProjectPath(),resetPhotoName);
Toast.makeText(MainActivity.this,"成功--->" Utils.genProjectPath() resetPhotoName,0).show();
//清空文本框
mETphotoName.setText("");
mETmodel.setText("");
dialog.cancel();
}
});
builder.show();
}
break;
default:
super.onActivityResult(requestCode, resultCode, data);
break;
}
}
/**
* 图片显示
* @param uri
*/
private void processPicture(Uri uri) {
final String[] projection = {MediaStore.Images.Media.DATA};
final Cursor cursor = managedQuery(uri, projection, null, null, null);
cursor.moveToFirst();
final int columnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
String imagePath = cursor.getString(columnIndex);
Log.e("MainActivity",imagePath);
final String targetPath = BitmapUtils.toRegularHashCode(imagePath) ".jpg";
BitmapUtils.compressBitmap(imagePath, targetPath, 640); //压缩
bitmap = BitmapUtils.decodeBitmap(imagePath, 150); //分解
mImage.setImageBitmap(bitmap); //显示
//上传服务器
//final AvatarUrlUpdateRequest request = new AvatarUrlUpdateRequest(REQUEST_ID_AVATAR_URL_UPDATE,mFileName,targetPath,mLoginResult);
//final LoginRequest request = new LoginRequest(0,"[email protected]","123456");
//genericDataManager.retrieveData(request, this);
}
}