我搜索了stackoverflow但从未找到解决方案
以下是我的情况：
我有一个开始意图选择图像的按钮
如何按比例调整大小（保持宽高比）并将其显示在另一个活动上（在imageview中）？
我还想将此已调整大小的图像保存到用户存储。我怎么能这样做？
谢谢！
这是我的代码
MainActivity.java
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(
Intent.createChooser(intent, getString(R.string.completeaction)),
PICK_FROM_FILE);
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
Bitmap selectedphoto = null;
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RequestExternal && resultCode == RESULT_OK && null != data) {
Uri selectedImage = data.getData();
String [] filePathColumn = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String filePath = cursor.getString(columnIndex);
selectedphoto = BitmapFactory.decodeFile(filePath);
cursor.close();
Intent intent = new Intent(MainActivity.this,PhotoResized.class);
intent.putExtra("data", selectedphoto);
startActivity(intent);
}
}
PhotoResized.java
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.photoresized);
img = (ImageView) findViewById(R.id.imageView1);
}