public class MainActivity extends AppCompatActivity {private EditText editText;private TextView textView;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main); editText =(EditText)findViewById(R.id.xm); textView= (TextView) findViewById(R.id.jl); findViewById(R.id.pg).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { Intent intent=new Intent(MainActivity.this,Main2Activity.class); intent.putExtra("date",editText.getText().toString()+"同学你有信心么？"); startActivityForResult(intent,0); } }); findViewById(R.id.exit).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { finish(); } });}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); textView.setText(data.getStringExtra("date"));}}第二个java代码public class Main2Activity extends AppCompatActivity {private TextView jl;@Overrideprotected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main2); jl= (TextView) findViewById(R.id.jl); Intent intent=getIntent(); jl.setText(intent.getStringExtra("date"));}public void onClick(View view){ switch (view.getId()){ case R.id.yes: back("有"); break; case R.id.no: back("没有"); break; }}public void back(String content){ Intent intent=new Intent(); intent.putExtra("date",content); setResult(1,intent); finish();}}