Activity篇之Activity之间通信

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Activity之间的通信方式,暂时我能想到的有3种分别是：1.Intent方式,2.BroadcastReciver方式下面就用来代码来描述下

Intent方式一般分为2种：1.传统Intent请求方式2.通过startActivityForResult()+setResult()方式

针对传统的Intent请求方式,这里需要结合启动模式表现更佳.

第一种方式代码如下：

package intent1.activity;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.TextView;import cn.activitycommunication.com.R;/** * Created by Administrator on 2016/11/26 0026. */public class Activity1 extends Activity{    private TextView tetxtview;    private Button btn;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity1);        tetxtview=(TextView) findViewById(R.id.tetxtview);        btn=(Button) findViewById(R.id.btn);        btn.setText("跳转到Activity2");        btn.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                Intent intent=new Intent(Activity1.this,Activity2.class);                intent.putExtra("data","123");                startActivity(intent);            }        });    }    @Override    protected void onNewIntent(Intent intent) {        super.onNewIntent(intent);        tetxtview.setText("收到信息：【"+intent.getStringExtra("data")+"】");    }}

package intent1.activity;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.TextView;import cn.activitycommunication.com.R;/** * Created by Administrator on 2016/11/26 0026. */public class Activity2 extends Activity{    private TextView tetxtview;    private Button btn;    private String data;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity1);        data=getIntent().getStringExtra("data");        tetxtview=(TextView) findViewById(R.id.tetxtview);        tetxtview.setText("收到信息：【"+data+"】");        btn=(Button) findViewById(R.id.btn);        btn.setText("回到到Activity1");        btn.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                Intent intent=new Intent(Activity2.this,Activity1.class);                intent.putExtra("data","456");                startActivity(intent);            }        });    }}

运行截图：

startActivityForResult+setResult方式：

package intent2.activity;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.TextView;import cn.activitycommunication.com.R;/** * Created by Administrator on 2016/11/26 0026. */public class Activity1 extends Activity{    private TextView tetxtview;    private Button btn;    private final int REQUESTCODE=1;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity1);        tetxtview=(TextView) findViewById(R.id.tetxtview);        btn=(Button) findViewById(R.id.btn);        btn.setText("跳转到Activity2");        btn.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                Intent intent = new Intent(Activity1.this, Activity2.class);                intent.putExtra("data", "123");                startActivityForResult(intent, REQUESTCODE);            }        });    }    @Override    protected void onActivityResult(int requestCode, int resultCode, Intent intent) {        super.onActivityResult(requestCode, resultCode, intent);        if(resultCode==RESULT_OK)        {            if(requestCode==REQUESTCODE)            {                tetxtview.setText("收到信息：【"+intent.getStringExtra("data")+"】");            }        }    }}

package intent2.activity;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.TextView;import cn.activitycommunication.com.R;/** * Created by Administrator on 2016/11/26 0026. */public class Activity2 extends Activity{    private TextView tetxtview;    private Button btn;    private String data;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity1);        data=getIntent().getStringExtra("data");        tetxtview=(TextView) findViewById(R.id.tetxtview);        tetxtview.setText("收到信息：【"+data+"】");        btn=(Button) findViewById(R.id.btn);        btn.setText("回到到Activity1");        btn.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                Intent intent=getIntent();                intent.putExtra("data","456");                setResult(RESULT_OK, intent);                finish();            }        });    }}

运行截图：

3.广播方式

package broadcast.activity;import android.app.Activity;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.TextView;import cn.activitycommunication.com.R;/** * Created by Administrator on 2016/11/26 0026. */public class Activity1 extends Activity{    private TextView tetxtview;    private Button btn;    private MyBroadCastReciver reciver;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity1);        reciver=new MyBroadCastReciver();        IntentFilter intentFilter=new IntentFilter();        intentFilter.addAction("com.action.broadcast");        registerReceiver(reciver, intentFilter);        tetxtview=(TextView) findViewById(R.id.tetxtview);        btn=(Button) findViewById(R.id.btn);        btn.setText("跳转到Activity2");        btn.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                Intent intent = new Intent(Activity1.this, Activity2.class);                intent.putExtra("data", "123");                startActivity(intent);            }        });    }    class MyBroadCastReciver extends BroadcastReceiver    {        @Override        public void onReceive(Context context, Intent intent) {            tetxtview.setText("收到信息：【"+intent.getStringExtra("data")+"】");        }    }    @Override    protected void onDestroy() {        super.onDestroy();        unregisterReceiver(reciver);    }}

package broadcast.activity;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.TextView;import cn.activitycommunication.com.R;/** * Created by Administrator on 2016/11/26 0026. */public class Activity2 extends Activity{    private TextView tetxtview;    private Button btn;    private String data;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity1);        data=getIntent().getStringExtra("data");        tetxtview=(TextView) findViewById(R.id.tetxtview);        tetxtview.setText("收到信息：【"+data+"】");        btn=(Button) findViewById(R.id.btn);        btn.setText("回到到Activity1");        btn.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                Intent intent=new Intent("com.action.broadcast");                intent.putExtra("data","456");                sendBroadcast(intent);                finish();            }        });    }}

运行截图：

下面附上Demo

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