激活android

Activity

本質(zhì)上就是UI,一個(gè)應(yīng)用會(huì)包含多個(gè)activity,每個(gè)活動(dòng)包含多個(gè)視圖

public?class?activity1?extends?Activity{

public?void?onCreate(Bundle?icicle){

super.onCreate(icicle);

setContentView(R.layout.main);

}

}

Android開(kāi)發(fā)環(huán)境

1、打電話

Intent?intent?=?new?Intent();

Intent.setAction(Intent.Action);

intent.setData(Uri.parse("tel:"+phoneNo));

在清單文件中要有：

<uses-permission?android:name="android.permission.CALL_PHONE">

2、發(fā)送短信

SmsManager?mng?=?SmsManager.getDefault();

String?msg?=?"hello";

mng.sendTextMessage("5554",null,msg,null,null);

Toast.makeText(Context,"",1).show();

<uses-permission?android:name="android.permission.SEND_SMS"?/>

注：

Toast通知課可以通知位置

toast.setGravity(Gravity.TOP|Gravity.LEFT,0,0);

Android=吐司處理

toast.setGravity(Gravity.TOP|Gravity.LEFT,0,0);

//自定義吐司

Toast?toast?=?new?Toast(getApplicationContext());

toast.setGravity(Gravity.CENTER_VERTICAL,?0,?0);

toast.setDuration(Toast.LENGTH_LONG);

//布局文件layout.xml

toast.setView(layout);

toast.show();

<application?android:icon="@drawable/icon"?package="....">

<uses-library?android:name="android.test.runner"/>

.....
</application>

<!--?儀器,樂(lè)器,工具,測(cè)試?-->

<instrumentation?android:name="android.test.InstrumentationTestRunner"

android:targetPackage="cn.itcast.action"?

android:label="Tests?for?My?App"?/>

public?class?XMLTest?extends?AndroidTestCase?{

?public?void?testSomething()?throws?Throwable?{

Log.i("Test",?"this?is?test?日志");

System.out.println("ddd");

Assert.assertTrue(1?+?1?==?3);

}

}

數(shù)據(jù)存儲(chǔ)

FileOutputStream?fos?=?context.openFileOutput("itcast.txt",MODE);

MODE:

Context.MODE_PRIVATE?=?0

Context.MODE_APPEND?=?32768

Context.MODE_WORLD_REANABLE?=?1

Context.MODE_WORLD_WRITEABLE?=?2

默認(rèn)文件位置：/data/data/<package?name>/files

FileInputStream?fis?=?Context.openFileInput("xxx.txt");

new?FileInputStream(new?File("/data/data/cn.itcast.xxx/../kk.txt"));

context.getCacheDir();

context.getFilesDir();

?

總結(jié)

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