除了使用startActivityForResult和setResult之外，resultCode为0

Question

我对Activity1使用startActivityForResult来启动Activity2:

btnSelectFiles.setOnClickListener(new View.OnClickListener() {
        public void onClick(View view) {
            savePreferences();
            Intent i = new Intent(getApplicationContext(),
                    FileManagerActivity.class);
            Bundle mBundle = new Bundle();
            mBundle.putString("FileManager", "NewOrder");
            i.putExtras(mBundle);
            startActivityForResult(i, Constants.addFilesCode);

        }
    });

onActivityResult方法：

 Intent returnIntent = new Intent();
setResult(1,returnIntent);   
FileManagerActivity.this.finish();

public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        Log.i(TAG, "onActivityResult");
        Log.i(TAG,
                "onActivityResult requestCode" + Integer.toString(requestCode)
                        + "resultCode" + Integer.toString(resultCode));
        // adding files to the list if the files were added successfully 
        if (requestCode == Constants.addFilesCode)
        {

            // successfull operation
            if (resultCode == 1)
            {
                if (adapter == null)
                    addFiles();
                else if (adapter.getCount() == 0)
                    addFiles();
                else {
                    adapter.notifyDataSetChanged();
                    changeFileHeader();
                }
                btnFilesRemove.setVisibility(View.VISIBLE);
                for (int b = 0; b < FileManagerActivity.getFinalAttachFiles()
                        .size(); b++) {
                    checks.add(b, 0);
                }
            }
        }

Answer 1

我的问题是，我用flag_activity_no_history启动活动。一旦删除它，resultcode就开始传播回调用方。