Java startActivityForResult和替换子活动

我有三个活动，活动A，活动B和活动C

正如今天的代码一样，ActivityA将使用startActivityForResult（）启动ActivityB，并从ActivityB接收返回代码。没问题

我还有另一个Android活动ActivityC，它代表了生成ActivityA返回代码的另一种方法

我的问题是：

ActivityB是否可以在ActivityC返回ActivityA中的onActivityResult（）方法时调用ActivityB创建ActivityC？

---

我问这个问题是因为我记得一年前在某个Android项目中做过这件事，但我记不起是哪一个，谷歌没有给我任何答案。

我创建了3个活动。活动A为结果启动了活动B，反过来，活动B只是启动了活动C，并在self上调用finish（）。活动C启动后，将结果设置为nad想要的、称为finish on self的任何结果。活动A中的onActivityResult被调用，所以我相信答案是肯定的，它是可以做到的

以下是我的活动示例 活动A:

public class MainTestActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main_test);

        new Timer().schedule(new TimerTask() {

            @Override
            public void run() {
                // TODO Auto-generated method stub
                Intent in = new Intent(MainTestActivity.this, TestActivityB.class);
                startActivityForResult(in, 101);
            }
        }, 2000);
    }

    @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_test, menu);
        return true;
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        // TODO Auto-generated method stub
        super.onActivityResult(requestCode, resultCode, data);
        Toast.makeText(this, "Got Intent", Toast.LENGTH_SHORT).show();
    }

}

public class TestActivityB extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main_test);

        new Timer().schedule(new TimerTask() {

            @Override
            public void run() {
                // TODO Auto-generated method stub
                Intent in = new Intent(TestActivityB.this, TestActivityC.class);
                startActivity(in);
                finish();
            }
        }, 2000);
    }

    @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_test, menu);
        return true;
    }

}

public class TestActivityC extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main_test);

        new Timer().schedule(new TimerTask() {

            @Override
            public void run() {
                // TODO Auto-generated method stub
                setResult(101);
                finish();
            }
        }, 2000);
    }

    @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_test, menu);
        return true;
    }

}

活动B:

public class MainTestActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main_test);

        new Timer().schedule(new TimerTask() {

            @Override
            public void run() {
                // TODO Auto-generated method stub
                Intent in = new Intent(MainTestActivity.this, TestActivityB.class);
                startActivityForResult(in, 101);
            }
        }, 2000);
    }

    @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_test, menu);
        return true;
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        // TODO Auto-generated method stub
        super.onActivityResult(requestCode, resultCode, data);
        Toast.makeText(this, "Got Intent", Toast.LENGTH_SHORT).show();
    }

}

public class TestActivityB extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main_test);

        new Timer().schedule(new TimerTask() {

            @Override
            public void run() {
                // TODO Auto-generated method stub
                Intent in = new Intent(TestActivityB.this, TestActivityC.class);
                startActivity(in);
                finish();
            }
        }, 2000);
    }

    @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_test, menu);
        return true;
    }

}

public class TestActivityC extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main_test);

        new Timer().schedule(new TimerTask() {

            @Override
            public void run() {
                // TODO Auto-generated method stub
                setResult(101);
                finish();
            }
        }, 2000);
    }

    @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_test, menu);
        return true;
    }

}

活动C:

public class MainTestActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main_test);

        new Timer().schedule(new TimerTask() {

            @Override
            public void run() {
                // TODO Auto-generated method stub
                Intent in = new Intent(MainTestActivity.this, TestActivityB.class);
                startActivityForResult(in, 101);
            }
        }, 2000);
    }

    @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_test, menu);
        return true;
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        // TODO Auto-generated method stub
        super.onActivityResult(requestCode, resultCode, data);
        Toast.makeText(this, "Got Intent", Toast.LENGTH_SHORT).show();
    }

}

public class TestActivityB extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main_test);

        new Timer().schedule(new TimerTask() {

            @Override
            public void run() {
                // TODO Auto-generated method stub
                Intent in = new Intent(TestActivityB.this, TestActivityC.class);
                startActivity(in);
                finish();
            }
        }, 2000);
    }

    @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_test, menu);
        return true;
    }

}

public class TestActivityC extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main_test);

        new Timer().schedule(new TimerTask() {

            @Override
            public void run() {
                // TODO Auto-generated method stub
                setResult(101);
                finish();
            }
        }, 2000);
    }

    @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_test, menu);
        return true;
    }

}

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我甚至对活动B中的

finish（）

进行了注释。当我按下后退按钮销毁活动B时，活动A能够显示祝酒词。这不是我想要做的，但确实有效。回答得很好，谢谢。