安卓按鈕的使用

就不細說項目的設置什么的了，直接從添加Activity開始。

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如圖，src文件夾下添加一個ButtonActivity

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View Code package?cn.Kurodo;

import?cn.Kurodo.R.id;
import?android.app.Activity;
import?android.os.Bundle;
import?android.util.Log;
import?android.widget.Button;
import?android.view.View;
import?android.view.View.OnClickListener;

public?class?ButtonActivity?extends?Activity?{

????public?ButtonActivity()?{
????????//?TODO?Auto-generated?constructor?stub
????}
????
????@Override
????public?void?onCreate(Bundle?savedInstanceState)?{
????????super.onCreate(savedInstanceState);
????????setContentView(R.layout.button);
????????
????????//找到Btn_Test的按鈕控件
????????Button?testBtn?=?(Button)findViewById(id.Btn_Test);
????????
????????//單擊事件的監聽
????????testBtn.setOnClickListener(new?OnClickListener(){
????????????@Override
????????????public?void?onClick(View?v)?{
????????????????
????????????????//LogCat下的輸出
????????????????Button?btn?=?(Button)v;
????????????????Log.v("Button",String.valueOf(btn.getText()));
????????????????
????????????}
????????});
????}

}

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然后再lay文件夾添加一個button.xml的布局

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View Code <?xml?version="1.0"?encoding="utf-8"?>
<LinearLayout
??xmlns:android="http://schemas.android.com/apk/res/android"
??android:orientation="vertical"
??android:layout_width="fill_parent"
??android:layout_height="fill_parent">
????<Button?android:id="@+id/Btn_Test"
????????????android:layout_width="fill_parent"
????????????android:layout_height="wrap_content"
????????????android:text="@string/btn_test"
????/>
</LinearLayout>

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最后修改項目的Manifest文件。修改最先啟動的Activity為我們添加的ButtonActivity

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View Code <?xml?version="1.0"?encoding="utf-8"?>
<manifest?xmlns:android="http://schemas.android.com/apk/res/android"
??????package="cn.Kurodo"
??????android:versionCode="1"
??????android:versionName="1.0">
????<uses-sdk?android:minSdkVersion="4"?/>

????<application?android:icon="@drawable/icon"?android:label="@string/app_name">
????????<activity?android:name=".ButtonActivity"
??????????????????android:label="@string/app_name">
????????????<intent-filter>
????????????????<action?android:name="android.intent.action.MAIN"?/>
????????????????<category?android:name="android.intent.category.LAUNCHER"?/>
????????????</intent-filter>
????????</activity>

????</application>
</manifest>

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運行效果

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轉載于:https://www.cnblogs.com/Kurodo/archive/2011/07/31/2122745.html

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