我如何获得一个按钮来打开另一个活动? [英] How do I get a button to open another activity?

问题描述

我已经在活动XML文件中添加了一个按钮，但无法打开它来打开其他活动.能否请您一步一步告诉我如何执行此操作?

I've added a button to my activity XML file and I can't get it to open my other activity. Can some please tell me step by step on how to do this?

推荐答案

A.确保在清单中声明了您的其他活动:

A. Make sure your other activity is declared in manifest:

<activity
    android:name="MyOtherActivity"
    android:label="@string/app_name">
</activity>

所有活动都必须在清单中声明，即使它们没有意图过滤器分配给他们.

All activities must be declared in manifest, even if they do not have an intent filter assigned to them.

B.在您的MainActivity中执行以下操作:

B. In your MainActivity do something like this:

Button btn = (Button)findViewById(R.id.open_activity_button);    

btn.setOnClickListener(new View.OnClickListener() {         
        @Override
        public void onClick(View v) {
            startActivity(new Intent(MainActivity.this, MyOtherActivity.class));
        }
});

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