Intent的简单使用

主要实现Intent之间值得转递，如从AActivity到BActivity之间传一个数值，一个实体类，一个集合类

下面代码只要是实现对startActivityForResult的使用，用ABC 3个类来实现的，从A到B，再B到C。

现在的需求就是A到B到C，当C完成某个操作时，结束当前界面并转递数据给A。如需求中的添加购物地址，添加卡号。

demo：http://download.csdn.net/download/qq_29774291/9936021

如下是3个类的代码

package com.item.jiejie.intent;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import com.item.jiejie.intent.bean.BankCardUtil;
import com.item.jiejie.intent.bean.Bean;

public class MainActivity extends AppCompatActivity {

    private Button btn_to_one;
    private EditText edt_name;
    private Button btn_name;
    private String name;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        btn_to_one = (Button)findViewById(R.id.btn_to_one);
        edt_name = (EditText)findViewById(R.id.edt_name);
        btn_name = (Button)findViewById(R.id.btn_name);
        btn_to_one.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent = new Intent(MainActivity.this,OneActivity.class);
                /**第一种方式将数据封装到intent对象中*/
               // intent.putExtra("data","随便写的");
                /**第二种方式将数据封装至bundle对象中*/
                Bundle bundle = new Bundle();
                bundle.putString("data","随便写的");
                intent.putExtras(bundle);
                startActivityForResult(intent,0x01);
            }
        });

        btn_name.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                name = BankCardUtil.getBankName(edt_name.getText().toString().trim().substring(0,6));
                Log.d("jiejie",edt_name.getText().toString().trim().substring(0,6) + "            " + name);
            }
        });
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        switch (requestCode){
            case 0x01:
                if(resultCode == 0x03&& data!=null){
                    Bean bean = (Bean)data.getSerializableExtra("data");
                    Log.d("jiejie","--------" + bean.getName());
                }
//                if(resultCode == 0x04&& data!=null){
//                    Bean bean = (Bean)data.getSerializableExtra("data");
//                    Log.d("jiejie","----dddd----" + bean.getName());
//                }
                break;
        }
    }
}

package com.item.jiejie.intent;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

import com.item.jiejie.intent.bean.Bean;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

public class OneActivity extends AppCompatActivity implements View.OnClickListener {
    private Button btn_finish;
    private TextView tv_message;
    private Button btn_to_two;

    private List<Bean> beanList = new ArrayList<>();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_one);
        btn_finish = (Button)findViewById(R.id.btn_finish);
        btn_to_two = (Button)findViewById(R.id.btn_to_two);
        tv_message = (TextView)findViewById(R.id.tv_message);
        btn_finish.setOnClickListener(this);
        btn_to_two.setOnClickListener(this);

        Intent intent = getIntent();
        /**第一种方式*/
//        String data = intent.getStringExtra("data");
//        tv_message.setText(data);
        /**第二种方式*/
        Bundle bundle = intent.getExtras();
        String data = bundle.getString("data");
        Log.d("jiejie","从上个页面接受的数据" + data);
        tv_message.setText(data);
        beanList.add(new Bean(1,"one"));
        beanList.add(new Bean(2,"two"));
        beanList.add(new Bean(3,"three"));
    }

    @Override
    public void onClick(View view) {
        switch (view.getId()){
            case R.id.btn_finish:
                finish();
                break;
            case R.id.btn_to_two:
                /**
                 * 这里跳转到TwoActivity
                 * 并传一个List的集合
                 */
                Intent intent = new Intent(this,TwoActivity.class);
                intent.putExtra("list",(Serializable)beanList);
                startActivityForResult(intent,0x02);
                break;
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        switch (requestCode){
            case 0x02:
                if(resultCode == 0x04){
                    if(data != null){
                       setResult(0x03,data);
                        finish();
                    }
                }
                break;
        }
    }
}

package com.item.jiejie.intent;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;

import com.item.jiejie.intent.bean.Bean;

import java.util.ArrayList;
import java.util.List;

public class TwoActivity extends AppCompatActivity implements View.OnClickListener {

    private Button btn_finish;
    private Button btn_to_main;
    private ArrayList<Bean> beans;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_two);
        btn_finish = (Button)findViewById(R.id.btn_finish);
        btn_to_main = (Button)findViewById(R.id.btn_to_main);
        btn_to_main.setOnClickListener(this);
        btn_finish.setOnClickListener(this);

        Intent intent = getIntent();
        if(intent!=null){
           beans = (ArrayList<Bean>)intent.getSerializableExtra("list");
            Log.d("jiejie","从上个界面接受的List集合" + beans.size() + "    " + beans.get(1).getName());
        }
    }

    @Override
    public void onClick(View view) {
        switch (view.getId()){
            case R.id.btn_finish:
                finish();
                break;
            case R.id.btn_to_main:
                //将一个数据传到MainActivity并把OneActivity杀死
                Intent intent = new Intent();
                Bean bean = new Bean(1,"你好啊");
                intent.putExtra("data",bean);
                setResult(0x04,intent);
                finish();
                break;
        }
    }
}

package com.item.jiejie.intent.bean;

import java.io.Serializable;

/**
 * 随便建个实体类 用来携带数据
 * Created by Administrator o 2017/8/15.
 */

public class Bean implements Serializable {
    private int type;
    private String name;

    public Bean(int type, String name) {
        this.type = type;
        this.name = name;
    }

    public int getType() {
        return type;
    }

    public void setType(int type) {
        this.type = type;
    }

    public String getName() {
        return name;
    }

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

 补充：添加一个overridePendingTransition来实现启动动画

如下是仿滴滴城市选择的动画效果

下面是3个动画：slide_in_up,  slide_out_down,slide_no

<?xml version="1.0" encoding="utf-8"?>

<translate
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:fromYDelta="100%p"
    android:toYDelta="0"
    android:duration="@android:integer/config_mediumAnimTime" />

<?xml version="1.0" encoding="utf-8"?>
<translate
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:fromYDelta="0"
    android:toYDelta="100%p"
    android:duration="@android:integer/config_mediumAnimTime" />

<?xml version="1.0" encoding="utf-8"?>

<translate
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:fromYDelta="0"
    android:toYDelta="0"
    android:duration="@android:integer/config_mediumAnimTime" />

启动Activity

　　　　　　　　　startActivity(new Intent(this, TestActivity.class));
                MainActivity.this.overridePendingTransition(R.anim.slide_in_up,R.anim.slide_no);

关闭Activity

　　　　　　　　　TestActivity.this.finish();
                TestActivity.this.overridePendingTransition(0, R.anim.slide_out_down);

现在TestActivity就有开启时（从底部打开），关闭时（从顶部向下关闭），但是滴滴出行的布局左右有15dp的间距可以显示上个Activity

所以我们可以把这个TestActivity的背景窗口设置为透明就可以

    <style name="TranparentTheme" parent="Theme.AppCompat.Light.NoActionBar">
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
        <item name="android:windowBackground">@color/transparent</item>
        <item name="android:windowIsTranslucent">true</item>
    </style>

然后清单文件调用下

         <activity android:name=".test.TestActivity"
            android:theme="@style/TranparentTheme"/>

这样TestActivity就是透明窗口了，现在设置个内边距及背景颜色就可以了。

<?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" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_gravity="center_vertical"
        android:background="#FF7200"
        android:focusable="true"
        android:focusableInTouchMode="true"
        android:orientation="horizontal" >

        <TextView
            android:id="@+id/tv_intent_back"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:drawableTop="@drawable/saosao"
            android:gravity="center"
            android:paddingBottom="6dp"
            android:paddingLeft="12dp"
            android:paddingRight="12dp"
            android:paddingTop="4dp"
            android:text="@string/sweep"
            android:textColor="#fff"
            android:textSize="12sp" />

        <EditText
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_marginBottom="6dp"
            android:layout_marginTop="6dp"
            android:layout_weight="0.8"
            android:background="#FF9D4D"
            android:drawableRight="@drawable/ic_search"
            android:gravity="center_vertical"
            android:hint="@string/search"
            android:paddingBottom="2dp"
            android:paddingLeft="5dp"
            android:paddingRight="2dp"
            android:paddingTop="2dp"
            android:singleLine="true"
            android:textColorHint="#fff"
            android:textSize="14sp" />

        <TextView
            android:id="@+id/tv_intent_other"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:drawableTop="@drawable/message"
            android:gravity="center"
            android:paddingBottom="2dp"
            android:paddingLeft="12dp"
            android:paddingRight="12dp"
            android:paddingTop="6dp"
            android:text="@string/message"
            android:textColor="#fff"
            android:textSize="12sp" >
        </TextView>
    </LinearLayout>

    <ListView
        android:id="@+id/lv_list"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:cacheColorHint="#ff