界面设计代码


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_tiaozhuan"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/holo_orange_dark"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context="hello.jmtiaozhuan.TiaozhuanActivity">
<EditText
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="150dp"
    android:hint="@string/EditTextname"
    android:textColorHint="#f0ff"
    android:gravity="center"
    android:textColor="#00ffee"
    android:id="@+id/shuru"/>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <Button
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="@string/button1"
            style="@style/text"
            android:onClick="onClick"
            android:id="@+id/button1"/>
        <Button
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="@string/button2"
            style="@style/text"
            android:id="@+id/button2"/>

    </LinearLayout>
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/TextViewname"
        android:gravity="center"
        android:id="@+id/show"
        android:textColor="#33ff00"
        style="@style/text"
        android:onClick="onClick"/>
</LinearLayout>

效果如下

string文件代码

<resources>
    <string name="app_name">JMtiaozhuan</string>
    <string name="button1">点击进入评估</string>
    <string name="button2">退出</string>
    <string name="EditTextname">请输入您的姓名</string>
    <string name="TextViewname">输出评估结果</string>
    <string name="button3">有</string>
    <string name="button4">没有</string>

</resources>
重点内容    按钮监控

btbutton2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (btbutton2.isClickable()) {
Toast.makeText(MainbackActivity.this, "再按一次退出按钮",
                        Toast.LENGTH_LONG).show();//如果退出按钮被点击一下，会显示文本再按一次退出按钮
                btbutton2.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        if (btbutton2.isClickable()) {
                            MainbackActivity.this.finish();//再一次监听按钮，如果再按一次退出按钮，就会关闭整个界面
                        }
                    }
                });
            }
        }
    });

最重要数据传递

1主界面向子界面传递数据

if (TextUtils.isEmpty(etshuru.getText().toString())) {
Toast.makeText(MainbackActivity.this, "输入名称不能为空", Toast.LENGTH_SHORT).show();    //如果没有输入名字就点击进入评估的话就会显示
return;
}
String name = etshuru.getText().toString();
Intent mIntent = new Intent(MainbackActivity.this, JiemianActivity.class); 
mIntent.putExtra("name", etshuru.getText().toString().trim() + "同学：学习Android有没有信心?");      //将name字符串传递给子界面，trim（）为去掉两边的空格
startActivityForResult(mIntent, 1000);

2子界面接收数据

Intent intent = getIntent();
TextView tvshow=(TextView)findViewById(R.id.show);
String name=intent.getStringExtra("name");    //接收主界面传递过来的name数据
tvshow.setText(name);

3子界面返回数据

private void ruturn() {
Intent intent=new Intent(this,MainbackActivity.class);
Button btnbutton3=(Button)findViewById(R.id.button3);
String name=btnbutton3.getText().toString();
intent.putExtra("name","评估内容返回为："+name);
finish();
}

4主界面接受返回数据

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);     //使用onActivityResult(int requestCode, int resultCode, Intent data)获取data 
if (requestCode == 1000 && (resultCode == 1001 || resultCode == 1002)) {    //使主界面的requestCode1000和子界面的resultCode1001或者1002比较
TextView tvshow = (TextView) findViewById(R.id.show);
String result = data.getStringExtra("name");    //接收子界面传递的"name"数据
tvshow.setText(result);
}
}