Android Studio] 點擊按鈕傳值 輸入文字點擊後可以傳值到另一個文字框
使用效果 在輸入框輸入 點擊按鈕後可以傳值到 文字框
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activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="tw.com.pcschool.自己的資料.MainActivity"
// 點擊按鈕
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="To Second Page"
android:id="@+id/button"
android:layout_below="@+id/textView"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:onClick="click" />
//輸入位置
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/editText"
android:layout_below="@+id/button"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
//顯示的程式碼
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Large Text"
android:id="@+id/textView2"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
</RelativeLayout>
=================================================================
MainActivity
package tw.com.pcschool.自己的資料;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
//點擊按鈕 click 對應按鈕的ID
public void click(View v)
{
//Intent it = new Intent(MainActivity.this, SecActivity.class);
//產生一個按鈕
EditText ed = (EditText) findViewById(R.id.editText);
//產生一個值
Bundle b = new Bundle();
//一個容器
b.putString("mydata", ed.getText().toString());
// it.putExtra("mydata", ed.getText().toString());
//it.putExtras(b);
//startActivity(it);
//========================================
//Intent it = getIntent();
// String str = it.getStringExtra("mydata");
//Bundle b = it.getExtras();
//取出來
String str = b.getString("mydata");
TextView tv2 = (TextView) findViewById(R.id.textView2);
tv2.setText(str);
}
}
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