Activity销毁时返回数据

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package com.skkk.service;import android.content.Intent;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.widget.Button;import android.widget.TextView;public class MainActivity extends AppCompatActivity {    private Button bn;    TextView tv;    boolean screen = true;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        bn= (Button) findViewById(R.id.button);        tv= (TextView) findViewById(R.id.textView);    }    public void myClick(View view){        Intent intent=new Intent(this,Second.class);        startActivityForResult(intent, 0);    }    @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        super.onActivityResult(requestCode, resultCode, data);        String str=data.getStringExtra("name");        tv.setText(str);    }}

<strong>销毁时要返回数据的 Activity 用 startActivityForResult（）方法启动</strong>

<strong>以下为打开的Activity </strong>

<strong>使用的是intent.putExtra()方法放入数据</strong>

</pre><pre name="code" class="java"><pre name="code" class="java">package com.skkk.service;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.Button;/** * Created by admin on 2016/4/28. */public class Second extends Activity {    Button bn2;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.second);        bn2= (Button) findViewById(R.id.button2);    }    public  void myClick(View v){        String mData="你好";        Intent data=new Intent();        data.putExtra("name",mData);        setResult(0,data);        finish();    }}

这样就实现了！

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