[英]Getting a null intent with onActivityResult
這是MainActivity中調用該意圖的代碼:
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(MainActivity.this, NewNote.class);
startActivityForResult(intent, REQUEST_CODE);
}
});
然后轉到NewNote類,其目的是這樣做的:
Intent intent = new Intent();
intent.putExtra("title", title.getText().toString());
//set the result, it will be passed to onActivityResult() in MainActivity
setResult(RESULT_OK, intent);
finish();
最后,在MainActivity內部,我具有onActivityResult方法:
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode,resultCode,data);
if (resultCode == RESULT_OK) {
Bundle extras = getIntent().getExtras();
if (extras != null) {
String value = extras.getString("title");
//The key argument here must match that used in the other activity
Toast.makeText(this, "" + value, Toast.LENGTH_SHORT).show();
}
}
}
當我運行應用程序時,OnActivityResult方法可以正常工作,但是value變量的輸出始終為null。
更改:
Bundle extras = getIntent().getExtras();
至:
Bundle extras = data.getExtras();
希望能幫助到你。
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