2个功能在一个活动中运行

Question

我可以知道如何在一个活动中运行两个功能 例子c-> b-> a

camera.takePicture(null, null, null, jpegCallBack);
public void sendemail(){
public void performDial(){

这个所有功能都在一个活动中

请帮助我谢谢

Answer 1

打开相机并使用此

拍照

Intent camera = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
URI pictureUri = Uri.fromFile(new File(<path where you want to save your file>));
camera.putExtra(MediaStore.EXTRA_OUTPUT, pictureUri);
startActivityForResult(camera);

之后onActivityResult，

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == PICTURE_RESULT){
        if (resultCode == Activity.RESULT_OK) {
            sendEmail(Uri.parse(data.toURI()));
        } else if (resultCode == Activity.RESULT_CANCELED) {

        }
    }
}

private void sendEmail(Uri path){
    Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND); 
    emailIntent.setType("image/jpeg");
    emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL, new String[]{"me@me.com"}); 
    emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "Default Subject"); 
    emailIntent.putExtra(android.content.Intent.EXTRA_TEXT, "Default Text"); 
    emailIntent.putExtra(Intent.EXTRA_STREAM, path);
    startActivity(Intent.createChooser(emailIntent, "Send email..."));
}