随笔
作者:互联网
界面一:
XML:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.example.hp.mainactivity.MainActivity" android:orientation="vertical"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="用户名:" android:layout_weight="1" android:layout_margin="10dp"/> <EditText android:id="@+id/edt1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="4" android:layout_margin="10dp"/> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="密码:" android:layout_weight="1" android:layout_margin="10dp"/> <EditText android:id="@+id/edt2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="4" android:layout_margin="10dp"/> </LinearLayout> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="请选择兴趣爱好:" android:layout_margin="10dp" /> <CheckBox android:id="@+id/cb1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="编程"/> <CheckBox android:id="@+id/cb2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="下棋"/> <CheckBox android:id="@+id/cb3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="唱歌"/> <Button android:id="@+id/bt1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:text="注册" android:layout_margin="100dp"/> </LinearLayout>
逻辑代码:
package com.example.hp.mainactivity; import android.content.Intent; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.CheckBox; import android.widget.CompoundButton; import android.widget.EditText; import android.widget.TextView; public class MainActivity extends AppCompatActivity implements View.OnClickListener, CompoundButton.OnCheckedChangeListener { String s1="",s2="",s3=""; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); findViewById(R.id.bt1).setOnClickListener(this); CheckBox cb1=(CheckBox)findViewById(R.id.cb1); CheckBox cb2=(CheckBox)findViewById(R.id.cb2); CheckBox cb3=(CheckBox)findViewById(R.id.cb3); cb1.setOnCheckedChangeListener(this); cb2.setOnCheckedChangeListener(this); cb3.setOnCheckedChangeListener(this); } @Override public void onClick(View view) { Intent intent=new Intent(); intent.setClass(MainActivity.this,SecondActivity.class); String name=((EditText)(findViewById(R.id.edt1))).getText().toString(); String account="用户名:"+name; String text=s1+" "+s2+" "+s3; intent.putExtra("account",account); intent.putExtra("text",text); startActivity(intent); } public void onCheckedChanged(CompoundButton cb, boolean isChecked) { Intent intent=new Intent(this,SecondActivity.class); switch (cb.getId()) { case R.id.cb1: if(isChecked) s1+="编程"; else s1=""; break; case R.id.cb2: if(isChecked) s2+="下棋"; else s2=""; break; case R.id.cb3: if(isChecked) s3+="唱歌"; else s3=""; break; default: break; } } }
界面二:
XML:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.example.hp.mainactivity.SecondActivity" android:orientation="vertical"> <TextView android:id="@+id/tv1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_margin="20dp" /> <TextView android:id="@+id/tv3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_margin="20dp" android:text="您选择的兴趣爱好为:"/> <TextView android:id="@+id/hobby" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" /> <Button android:id="@+id/bt2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:text="我要充值" android:layout_margin="20dp" /> <TextView android:id="@+id/tv2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" /> </LinearLayout>
逻辑代码:
package com.example.hp.mainactivity; import android.content.Intent; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.TextView; public class SecondActivity extends AppCompatActivity implements View.OnClickListener { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_second); Intent intent1=getIntent(); String name=intent1.getStringExtra("account"); ((TextView)(findViewById(R.id.tv1))).setText(name); Intent intent2=getIntent(); String text=intent2.getStringExtra("text"); ((TextView)(findViewById(R.id.hobby))).setText(text); findViewById(R.id.bt2).setOnClickListener(this); } @Override public void onClick(View view) { Intent intent = new Intent(this,ThirdActivity.class); startActivityForResult(intent,1); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if(requestCode==1&&resultCode==2){ String pay=data.getStringExtra("pay"); ((TextView)(findViewById(R.id.tv2))).setText(pay); } } }
界面三:
XML:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.example.hp.mainactivity.ThirdActivity" android:orientation="vertical"> <Button android:id="@+id/bt_1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="100" android:layout_gravity="center"/> <Button android:id="@+id/bt_2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="500" android:layout_gravity="center"/> <Button android:id="@+id/bt_3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="1000" android:layout_gravity="center"/> </LinearLayout>
逻辑代码:
package com.example.hp.mainactivity; import android.content.Intent; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; public class ThirdActivity extends AppCompatActivity implements View.OnClickListener { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_third); findViewById(R.id.bt_1).setOnClickListener(this); findViewById(R.id.bt_2).setOnClickListener(this); findViewById(R.id.bt_3).setOnClickListener(this); } @Override public void onClick(View view) { switch (view.getId()){ case R.id.bt_1: Intent intent1=new Intent(this,SecondActivity.class); intent1.putExtra("pay","充值金额为:100元"); setResult(2,intent1); finish(); break; case R.id.bt_2: Intent intent2=new Intent(this,SecondActivity.class); intent2.putExtra("pay","充值金额为:500元"); setResult(2,intent2); finish(); break; case R.id.bt_3: Intent intent3=new Intent(this,SecondActivity.class); intent3.putExtra("pay","充值金额为:1000元"); setResult(2,intent3); finish(); break; } } }
标签:findViewById,class,Intent,import,android,随笔,id 来源: https://www.cnblogs.com/cui-Y-P/p/15404913.html