Android Studio学习路程(6)
今天学习了如何进行界面之间的跳转。
用Intent进行页面跳转:
Intent是一个将要执行的动作的抽象的描述,由Intent来协助完成Android各个组件之间的通讯。下面是一些代码。
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" android:orientation="vertical" tools:context="com.example.hp.app2.MainActivity"> <Button android:id="@+id/btn1" android:text="按钮1" android:layout_width="match_parent" android:layout_height="wrap_content" /> <Button android:id="@+id/btn2" android:text="按钮2" android:layout_width="match_parent" android:layout_height="wrap_content" /> </LinearLayout>
package com.example.hp.app2; import android.os.Bundle; import android.support.v7.app.ActionBarActivity; /** * Created by hp on 2020/2/11. */ public class FirstActivity extends ActionBarActivity { protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_first); } }
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent"> <TextView android:textSize="25dp" android:textColor="@android:color/holo_red_light" android:text="这是第一个界面" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </LinearLayout>
package com.example.hp.app2; import android.content.Intent; import android.os.Bundle; import android.support.v7.app.ActionBarActivity; import android.view.View; public class MainActivity extends ActionBarActivity implements View.OnClickListener { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initUI(); } private void initUI() { findViewById(R.id.btn1).setOnClickListener( this); findViewById(R.id.btn2).setOnClickListener( this); } @Override public void onClick(View view) { switch (view.getId()){ case R.id.btn1: //跳转到第一个界面 //跳转界面用到了intent的方法 Intent intent = new Intent(); intent.setClass(getApplicationContext(),FirstActivity.class); break; case R.id.btn2: //第二个界面 break; } } }
相关推荐
huha 2020-10-16
xfcyhades 2020-11-20
sgafdsg 2020-11-04
Michael 2020-11-03
fengyeezju 2020-10-14
ziyexiaoxiao 2020-10-14
业余架构师 2020-10-09
OuNuo0 2020-09-29
moses 2020-09-22
Angelia 2020-09-11
qinxu 2020-09-10
刘炳昭 2020-09-10
Nostalgiachild 2020-09-07
Nostalgiachild 2020-08-17
leavesC 2020-08-14
一青年 2020-08-13
AndroidAiStudy 2020-08-07
ydc0 2020-07-30
绿豆饼 2020-07-28