activity更新另一个activityUI方法(一)

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关于activity更新另一个activityUI的方法，我查了很多资料，总结起来，常用的有两种方法：1、handler更新。2、广播更新UI。
关于广播更新的方法：
1、第一个activity中：

package com.example.upanotheracyui;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.widget.Button;import android.widget.RelativeLayout;import android.widget.TextView;import butterknife.Bind;import butterknife.ButterKnife;public class MainActivity extends AppCompatActivity {    @Bind(R.id.tv_text)    TextView tvText;    @Bind(R.id.btn)    Button btn;    @Bind(R.id.activity_main)    RelativeLayout activityMain;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        ButterKnife.bind(this);        btn.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                Intent i = new Intent(MainActivity.this, SecActivity.class);                startActivity(i);            }        });        IntentFilter filter = new IntentFilter(SecActivity.action);        registerReceiver(broadcastReceiver, filter);    }    BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {        @Override        public void onReceive(Context context, Intent intent) {            tvText.setText(intent.getExtras().getString("data"));        }    };    protected void onDestroy() {        unregisterReceiver(broadcastReceiver);    }}

该activity对应的布局activity_main.xml：

<?xml version="1.0" encoding="utf-8"?><RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:background="@color/colorPrimaryDark"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="com.example.upanotheracyui.MainActivity">    <TextView        android:id="@+id/tv_text"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textColor="#ffffff"        android:textSize="16sp"        android:text="hello world！" />    <Button        android:id="@+id/btn"        android:layout_width="wrap_content"        android:textColor="#ffffff"        android:layout_height="wrap_content"        android:background="@color/colorAccent"        android:padding="10dp"        android:layout_marginTop="50dp"        android:textSize="18sp"        android:text="跳转activity" /></RelativeLayout>

2、另一个activity代码：

package com.example.upanotheracyui;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.Button;import butterknife.Bind;import butterknife.ButterKnife;/** * Created by Administrator on 2016/12/2 0002. */public class SecActivity extends Activity {    @Bind(R.id.btn_two)    Button btnTwo;    public static final String action = "com.example.upanotheracyui.action";    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_sec);        ButterKnife.bind(this);        btnTwo.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                //更新第一个activity的ui                Intent intent = new Intent(action);                intent.putExtra("data", "跳转界面——" + Math.random());                sendBroadcast(intent);//                finish();            }        });    }}

该activity对应的布局文件 activity_sec.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:background="@color/colorPrimaryDark"    android:orientation="vertical">    <TextView        android:layout_marginTop="10dp"        android:id="@+id/two_txt"        android:textColor="#ffffff"        android:textSize="16sp"        android:padding="10dp"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="hello_world" />    <Button        android:id="@+id/btn_two"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginTop="50dp"        android:textSize="18sp"        android:layout_gravity="center_horizontal"        android:padding="10dp"        android:background="#FFFFFF"        android:text="更新1tv" /></LinearLayout>

测试后，正常运行。

文件下载地址：
http://download.csdn.net/detail/liyihan333/9700185

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