源码下载方法 第一次: git clone https://github.com/weidongshan/APP_0001_LEDDemo.git 更新: git pull origin 取出指定版本: git checkout v7 // 使用硬件访问服务
3 编写APP代码
a. 包含什么
out/target/common/obj/JAVA_LIBRARIES/framework_intermediates/classes.jar
How do I build the Android SDK with hidden and internal APIs available?
http://stackoverflow.com/questions/7888191/how-do-i-build-the-android-sdk-with-hidden-and-internal-apis-available
File--------------------->Project Strucure---------------------------------->+
b. 怎么包含
Creating a module library and adding it to module dependencies
https://www.jetbrains.com/idea/help/configuring-module-dependencies-and-libraries.html
E:Githubhello-worldAPP_0001_LEDDemoappuild.gradle
apply plugin: 'com.android.application' android { compileSdkVersion 22 buildToolsVersion "22.0.1" defaultConfig { applicationId "com.thisway.app_0001_leddemo" minSdkVersion 15 targetSdkVersion 22 versionCode 1 versionName "1.0" // Enabling multidex support. multiDexEnabled true } dexOptions { javaMaxHeapSize "4g" } sourceSets { main { jniLibs.srcDirs = ['libs'] } } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } } dependencies { compile fileTree(include: ['*.jar'], dir: 'libs') compile 'com.android.support:appcompat-v7:22.2.1' compile project(':classes') compile 'com.android.support:multidex:1.0.0' }
E:Githubhello-worldAPP_0001_LEDDemoappsrcmainAndroidManifest.xml
android:name="android.support.multidex.MultiDexApplication"
E:Githubhello-worldAPP_0001_LEDDemoappsrcmainjavacom hiswayapp_0001_leddemoMainActivity.java
package com.thisway.app_0001_leddemo; import android.os.RemoteException; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.widget.Button; import android.view.View; import android.widget.CheckBox; import android.widget.Toast; import android.os.ILedService; import android.os.ServiceManager; public class MainActivity extends AppCompatActivity { private boolean ledon = false; private Button button = null; private CheckBox checkBoxLed1 = null; private CheckBox checkBoxLed2 = null; private CheckBox checkBoxLed3 = null; private CheckBox checkBoxLed4 = null; private ILedService iLedService = null; class MyButtonListener implements View.OnClickListener { @Override public void onClick(View v) { ledon = !ledon; if (ledon) { button.setText("ALL OFF"); checkBoxLed1.setChecked(true); checkBoxLed2.setChecked(true); checkBoxLed3.setChecked(true); checkBoxLed4.setChecked(true); try { for (int i = 0; i < 4; i++) iLedService.ledCtrl(i, 1); } catch (RemoteException e) { e.printStackTrace(); } } else { button.setText("ALL ON"); checkBoxLed1.setChecked(false); checkBoxLed2.setChecked(false); checkBoxLed3.setChecked(false); checkBoxLed4.setChecked(false); try { for (int i = 0; i < 4; i++) iLedService.ledCtrl(i, 0); } catch (RemoteException e) { e.printStackTrace(); } } } } public void onCheckboxClicked(View view) { // Is the view now checked? boolean checked = ((CheckBox) view).isChecked(); try { // Check which checkbox was clicked switch(view.getId()) { case R.id.LED1: if (checked) { // Put some meat on the sandwich Toast.makeText(getApplicationContext(), "LED1 on", Toast.LENGTH_SHORT).show(); iLedService.ledCtrl(0, 1); } else { // Remove the meat Toast.makeText(getApplicationContext(), "LED1 off", Toast.LENGTH_SHORT).show(); iLedService.ledCtrl(0, 0); } break; case R.id.LED2: if (checked) { // Put some meat on the sandwich Toast.makeText(getApplicationContext(), "LED2 on", Toast.LENGTH_SHORT).show(); iLedService.ledCtrl(1, 1); } else { // Remove the meat Toast.makeText(getApplicationContext(), "LED2 off", Toast.LENGTH_SHORT).show(); iLedService.ledCtrl(1, 0); } break; case R.id.LED3: if (checked) { // Put some meat on the sandwich Toast.makeText(getApplicationContext(), "LED3 on", Toast.LENGTH_SHORT).show(); iLedService.ledCtrl(2, 1); } else { // Remove the meat Toast.makeText(getApplicationContext(), "LED3 off", Toast.LENGTH_SHORT).show(); iLedService.ledCtrl(2, 0); } break; case R.id.LED4: if (checked) { // Put some meat on the sandwich Toast.makeText(getApplicationContext(), "LED4 on", Toast.LENGTH_SHORT).show(); iLedService.ledCtrl(3, 1); } else { // Remove the meat Toast.makeText(getApplicationContext(), "LED4 off", Toast.LENGTH_SHORT).show(); iLedService.ledCtrl(3, 0); } break; // TODO: Veggie sandwich } } catch (RemoteException e) { e.printStackTrace(); } } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); button = (Button) findViewById(R.id.BUTTON); iLedService = ILedService.Stub.asInterface(ServiceManager.getService("led")); checkBoxLed1 = (CheckBox) findViewById(R.id.LED1); checkBoxLed2 = (CheckBox) findViewById(R.id.LED2); checkBoxLed3 = (CheckBox) findViewById(R.id.LED3); checkBoxLed4 = (CheckBox) findViewById(R.id.LED4); button.setOnClickListener(new MyButtonListener()); /* button.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { // Perform action on click ledon = !ledon; if (ledon) button.setText("ALL OFF"); else button.setText("ALL ON"); } }); */ } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.menu_main, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); //noinspection SimplifiableIfStatement if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); } }
编译错误
a. java.lang.OutOfMemoryError: GC overhead limit exceeded
Android Studio Google jar causing GC overhead limit exceeded error
http://stackoverflow.com/questions/25013638/android-studio-google-jar-causing-gc-overhead-limit-exceeded-error
b. Too many field references
Building Apps with Over 65K Methods
https://developer.android.com/tools/building/multidex.html