Activity跳转及数据传递

android studio中先加载android pacleable插件

BaseActivity.java

package com.chuanxidemo.shaoxin.demo04;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;

/**
 * Created by shaoxin on 2017/2/21.
 */

public abstract class BaseActivity extends AppCompatActivity implements View.OnClickListener {

    

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView();
        init();
        setListener();
    }

    protected abstract void setContentView();

    protected abstract void setListener();

    protected abstract void init();

}

Student.java(在这里直接右键选择Generate->选择parcleable自动生成代码，进一步自动生成get（）set（）)

package com.chuanxidemo.shaoxin.demo04;

import android.os.Parcel;
import android.os.Parcelable;

/**
 * Created by shaoxin on 2017/2/22.
 */

public class Student implements Parcelable {

    private String name;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public int describeContents() {
        return 0;
    }

    @Override
    public void writeToParcel(Parcel dest, int flags) {
        dest.writeString(this.name);
    }

    public Student() {
    }

    protected Student(Parcel in) {
        this.name = in.readString();
    }

    public static final Parcelable.Creator<Student> CREATOR = new Parcelable.Creator<Student>() {
        @Override
        public Student createFromParcel(Parcel source) {
            return new Student(source);
        }

        @Override
        public Student[] newArray(int size) {
            return new Student[size];
        }
    };
}

MainActivity.java

package com.chuanxidemo.shaoxin.demo04;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class MainActivity extends BaseActivity {
    private EditText edit;
    private Button startBtn;


    @Override
    protected void setContentView() {
        setContentView(R.layout.activity_main);
    }

    @Override
    protected void setListener() {
        startBtn.setOnClickListener(this);
    }

    @Override
    protected void init() {
        edit = (EditText) findViewById(R.id.edit);
        startBtn = (Button) findViewById(R.id.start_btn);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()){
            case R.id.start_btn:
                Intent intent = new Intent(this,Main.class);
                Student student = new Student();
                student.setName(edit.getText().toString());
                Bundle data = new Bundle();
                data.putParcelable("student", student);
                intent.putExtras(data);
                startActivity(intent);
                break;
        }
    }
}

Main.java

package com.chuanxidemo.shaoxin.demo04;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;

/**
 * Created by shaoxin on 2017/2/22.
 */
public class Main extends BaseActivity{
    private TextView txt;


    @Override
    protected void setContentView() {
        setContentView(R.layout.main);
    }

    @Override
    protected void setListener() {

    }

    @Override
    protected void init() {
        txt = (TextView) findViewById(R.id.txt);
        Intent intent = getIntent();
        Bundle bundle = intent.getExtras();
        Student student = (Student) bundle.getParcelable("student");
        txt.setText(student.getName());
    }

    @Override
    public void onClick(View v) {

    }

  }

activity_main.xml

<?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:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.chuanxidemo.shaoxin.demo04.MainActivity">

    <EditText
        android:id="@+id/edit"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="请输入内容" />

    <Button
        android:id="@+id/start_btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="跳转" />
</LinearLayout>

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">
    <TextView
        android:id="@+id/txt"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
</LinearLayout>