Activity1
public class MainActivity extends AppCompatActivity {
private TextView mTvMain;
private Button mBtnMain;
private int REQUEST_CODE=0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
}
private void initView() {
mTvMain = (TextView) findViewById(R.id.tv_main);
mBtnMain = (Button) findViewById(R.id.btn_main);
mBtnMain.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(MainActivity.this, SecondActivity.class);
startActivityForResult(intent, REQUEST_CODE);
}
});
}
@Override
protected void onActivityResult(int requestCode,int resultCode,Intent data){
super.onActivityResult(requestCode,resultCode,data);
if (requestCode == REQUEST_CODE){
switch (resultCode){
case 1:
String content = data.getStringExtra("ccontent");
mTvMain.setText(content);
break;
default;
}
}
}
}
Activity2
public class SecondActivity extends AppCompatActivity {
private EditText mEtSec;
private Button mBtnSec;
private final int RESULT_CODE = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);
initView();
}
private void initView(){
mEtSec = (EditText)findViewById(R.id.et_second);
mBtnSec =(Button) findViewById(R.id.btn_second);
mBtnSec.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View view){
String content = mEtSec.getText().toString();
Intent intent = new Intent();
intent.putExtra("content",content);
setResult(RESULT_CODE,intent);
finish();
}
});
}
}