安卓作业之Activity的跳转

本次作业主要是实现两个Activity的跳转，首先这是第一个的结果示意图：

xml代码；

JAVA代码：
public class MainActivity extends AppCompatActivity {
private EditText ev_xingming;
private TextView jieguo;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ev_xingming = (EditText) findViewById(R.id.ev_xingming);
jieguo = (TextView) findViewById(R.id.tv_jieguo);
try{
Intent intent = getIntent();
String jg = intent.getStringExtra("result");
jieguo.setText(jg);
}catch (Exception e){}

}

public void onClick(View view){
switch (view.getId()){
case R.id.btn_pinggu:
String name=ev_xingming.getText().toString();
Intent intent = new Intent(MainActivity.this,YActivity.class);
intent.putExtra("name",name);
startActivity(intent);
break;
case R.id.btn_tuichu:
finish();
break;
}
}
}

这是第二个Activity的结果示意图：

xml代码：

JAVA代码： public class YActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_y);

Intent intent=getIntent();
String jg=intent.getStringExtra("name");
TextView question=(TextView)findViewById(R.id.qua);
question.setText(jg+"学习Android有没有信心");

}

public void hd1(){
Intent intent = new Intent(YActivity.this,MainActivity.class);
intent.putExtra("result","对学习安卓有信心");
startActivity(intent);
finish();
}

public void hd2(){
Intent intent = new Intent(YActivity.this,MainActivity.class);
intent.putExtra("result","对学习安卓没有信心");
startActivity(intent);
finish();
}
public void onClick(View view){
switch (view.getId()){
case R.id.btn_you:
hd1();
break;
case R.id.btn_meiyou:
hd2();
break;
}
}
}
作业做好我发现最重要的就是Intent
这就是我的作业。