Android 实现跳转功能

主要实现功能： 从主  mainActivity  跳转到otherActivity。

新建一个hello工程，添加 otherActivity 和 otherxml.xml；

mainActivity内容：

package com.example.xiaoyehack.test;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

import android.view.View;
import android.content.Intent;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    public void skip(View view){
        Intent intent = new Intent();
        intent.setClass(MainActivity.this,otherActivity.class);
        startActivity(intent);
    }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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=".MainActivity">

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="79dp"
        android:layout_marginStart="148dp"
        android:layout_marginTop="32dp"
        android:layout_marginEnd="148dp"
        android:layout_marginBottom="276dp"
        android:onClick="skip"
        android:text="点击跳转"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView3" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="122dp"
        android:layout_marginTop="105dp"
        android:layout_marginEnd="122dp"
        android:layout_marginBottom="92dp"
        android:text="点击下面按钮实现跳转"
        app:layout_constraintBottom_toTopOf="@+id/button"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</android.support.constraint.ConstraintLayout>

otherActivity内容：

package com.example.xiaoyehack.test;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;

public class otherActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.otherxml);
    }

}

　　otherxml内容：

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
    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">

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="67dp"
        android:layout_marginStart="116dp"
        android:layout_marginTop="146dp"
        android:layout_marginEnd="100dp"
        android:layout_marginBottom="346dp"
        android:text="不要吹牛皮，就是一把梭！"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.0" />
</android.support.constraint.ConstraintLayout>