实现页面跳转

一:无返回结果的页面跳转

1>新建一个Activity文件如MainActivity;重写onCreat方法;设置xml文件关联,setContentView(R.layout.activity_main);

2>新建xml文件如activity_main.xml;在里面设置控件

3>新建一个Activity文件如Second_Activity;重写onCreat方法;设置xml文件关联,setContentView(R.layout.secondview);

4>新建xml文件如secondview.xml;在里面设置控件

5>将新建的Activity文件都配置到Android.Manifest.xml文件中

6>重写第一个页面跳转到第二个页面的按钮的点击事件的方法

Intent intent = new Intent(MainActivity.this,SecondActivity.class);//第一个参数是上下文文件,第二个对象是目标文件
MainActivity.this.startActivity(intent);

 

1>MainActivity.java

package com.thinker.activitydemo;

import android.app.Activity;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity {
    private Button btn;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        btn = (Button) findViewById(R.id.button1);
        btn.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                Intent intent = new Intent(MainActivity.this,Second_Activity.class);
                MainActivity.this.startActivity(intent);
            }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}

2〉activity_main.xml

<RelativeLayout 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"
    tools:context=".MainActivity" >

    <Button
        android:id="@+id/button1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:text="启动第二个Activity" />
   
</RelativeLayout>

3〉Second_Activity.java

package com.thinker.activitydemo;

import android.app.Activity;
import android.os.Bundle;
import android.widget.Button;

public class Second_Activity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.secondview);
    }
}

4:secondview.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="67dp"
        android:text="这是第二个Activity" />

</RelativeLayout>

5:AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.thinker.caculator"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="18" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.thinker.caculator.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
         </activity>
         <activity 
             android:name="com.thinker.caculator.SecondActivity"
             ></activity>
       
    </application>

</manifest>

 二:有返回值的页面跳转

步骤描述:

已经有默认的MainActivity,
1:新建一个SecondActivity.java,新建一个second_activity.xml
2:重写SecondActivity.java的onclick方法,设置xml文件关联,配置AndroidManifest.xml文件,然后去设置两个xml的控件
3:在MainActivity.java文件中建立控件的对象并设置点击事件,
        bt2.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                Intent intent = new Intent(mContext, SecondActivity.class);
                /*
                 * 第一个参数是intent对象
                 * 第二个参数是请求的标识
                 */
                startActivityForResult(intent, 1);
            }
        });
4: 在第二个页面为按钮设置点击事件,设置点击这个按钮的同时返回的结果
        bt.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                Intent data = new Intent();
                /*
                 * 第一个参数是key,第二个参数是resultCode
                 */
                data.putExtra("data", content);
                setResult(2,data);
                finish();//结束当前的页面,销毁当前页面,从而返回第一个页面
            };
        });
5: 在第一个页面重写接收数据的onActivityResult方法
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        // TODO Auto-generated method stub
        /*
         * 通过 onActivityResult跳转,接收返回数据的方法
         * requestCode:请求的标识
         * resultCode:第二个页面回传的数据
         */
        super.onActivityResult(requestCode, resultCode, data);
        if(requestCode == 1 && resultCode == 2){
            String content = data.getStringExtra("data");//因为 key是data
            tv.setText(content);
        }
        
    }

1: MainActivity.java方法:

package com.thinker.returnresultdemo;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends Activity {
    private Button bt1;
    private Button bt2;
    private TextView tv;
    private Context mContext;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        bt1 = (Button) findViewById(R.id.button1);
        bt2 = (Button) findViewById(R.id.button2);
        tv = (TextView) findViewById(R.id.textView1);
        mContext = this;
        bt1.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                Intent intent = new Intent(mContext,SecondActivity.class);
                MainActivity.this.startActivity(intent);
            }
        });
        bt2.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                Intent intent = new Intent(mContext, SecondActivity.class);
                /*
                 * 第一个参数是intent对象
                 * 第二个参数是请求的标识
                 */
                startActivityForResult(intent, 1);
            }
        });
    }
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        // TODO Auto-generated method stub
        /*
         * 通过 onActivityResult跳转,接收返回数据的方法
         * requestCode:请求的标识
         * resultCode:第二个页面回传的数据
         */
        super.onActivityResult(requestCode, resultCode, data);
        if(requestCode == 1 && resultCode == 2){
            String content = data.getStringExtra("data");//因为 key是data
            tv.setText(content);
        }
        
    }

}

2: activity_main.xml

<RelativeLayout 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"
    tools:context=".MainActivity" >

    <Button
        android:id="@+id/button1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:text="第一种启动方式" />

    <Button
        android:id="@+id/button2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/button1"
        android:layout_below="@+id/button1"
        android:text="第二种启动方式" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/button2"
        android:layout_below="@+id/button2"
        android:layout_marginTop="18dp"
        android:gravity="center"
        android:text="TextView" />

</RelativeLayout>

3:SecondActivity.java

package com.thinker.returnresultdemo;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class SecondActivity extends Activity{
    private Button bt;
    private String content = "你好";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.second_view);
        /*
         * 第二个页面什么时候给第一个页面回传数据
         * 回传到第一个页面的实际上是一个Intent对象
         */
        bt = (Button) findViewById(R.id.button1);
        bt.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                Intent data = new Intent();
                /*
                 * 第一个参数是key,第二个参数是resultCode
                 */
                data.putExtra("data", content);
                setResult(2,data);
                finish();//结束当前的页面,销毁当前页面,从而返回第一个页面
            };
        });
    }
}

4:second_view.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <Button
        android:id="@+id/button1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:text="Button" />

</RelativeLayout>

5:AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.thinker.returnresultdemo"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="18" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.thinker.returnresultdemo.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name="com.thinker.returnresultdemo.SecondActivity"
            android:label="@string/app_name" >
        </activity>
    </application>

</manifest>

 

posted on 2016-01-24 10:46  张明明_1  阅读(864)  评论(0编辑  收藏  举报

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