I am trying to create library project and used library code and resource to my other application, I can successfully get library activity or method which was not using any resource, but getting error when I try to use resource in activity or any method.
Here is my code.
package com.dhl.lib; import android.app.ActionBar; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.text.InputType; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.EditText; import android.widget.LinearLayout; import android.widget.Toast; public class AdditionActivity extends AppCompatActivity implements View.OnClickListener { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); initUI(); } private void initUI() { LinearLayout linearLayout = new LinearLayout(this); linearLayout.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT)); linearLayout.setOrientation(LinearLayout.VERTICAL); final EditText edtFirst = new EditText(this); edtFirst.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT)); edtFirst.setInputType(InputType.TYPE_NUMBER_FLAG_DECIMAL); final EditText edtSecond = new EditText(this); edtFirst.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT)); edtFirst.setInputType(InputType.TYPE_NUMBER_FLAG_DECIMAL); Button btn = new Button(this); btn.setLayoutParams(new ActionBar.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT)); btn.setText("Add"); btn.setBackground(getResources().getDrawable(R.mipmap.ic_launcher)); btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Toast.makeText(AdditionActivity.this, "==> " + (Integer.parseInt(edtFirst.getText().toString().trim()) + Integer.parseInt(edtSecond.getText().toString().trim())), Toast.LENGTH_SHORT).show(); } }); linearLayout.addView(edtFirst); linearLayout.addView(edtSecond); linearLayout.addView(btn); setContentView(linearLayout); } @Override public void onClick(View v) { } } Here another class which used resource
package com.dhl.lib; import android.app.Activity; import android.app.AlertDialog; import android.content.pm.ApplicationInfo; import android.content.pm.PackageManager; import android.graphics.drawable.Drawable; import android.text.Html; import android.text.method.LinkMovementMethod; import android.view.InflateException; import android.view.LayoutInflater; import android.view.View; import android.widget.TextView; public class About { public static void show(Activity activity, String aboutText, String okButtonText) { String versionNumber = "unknown"; Drawable icon = null; String appName = "unknown"; View about; TextView tvAbout; try { LayoutInflater inflater = activity.getLayoutInflater(); about = inflater.inflate(R.layout.about, null); tvAbout = (TextView) about.findViewById(R.id.ca_tutortutor_aboutText); } catch (InflateException e) { about = tvAbout = new TextView(activity); } tvAbout.setText(Html.fromHtml(aboutText)); tvAbout.setMovementMethod(LinkMovementMethod.getInstance()); new AlertDialog.Builder(activity) .setTitle(appName + " " + versionNumber) .setIcon(icon) .setPositiveButton(okButtonText, null) .setView(about) .show(); } } ** XML Resource of About.xml **
<?xml version="1.0" encoding="utf-8"?> <scrollview xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/ca_tutortutor_aboutView" android:layout_width="fill_parent" android:layout_height="fill_parent" tools:context="com.dhl.lib.About"> <linearlayout android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="horizontal" android:padding="5dp"> <textview android:id="@+id/ca_tutortutor_aboutText" android:layout_width="wrap_content" android:layout_height="fill_parent"></textview> </linearlayout> </scrollview> ** Manifest of Lib Project **
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.dhl.lib"> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:supportsRtl="true" android:theme="@style/AppTheme"> <activity android:name=".AdditionActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest> ** app build.gradle **
apply plugin: 'com.android.library' android { compileSdkVersion 23 buildToolsVersion "23.0.2" defaultConfig { minSdkVersion 16 targetSdkVersion 23 versionCode 1 versionName "1.0" } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } } dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) testCompile 'junit:junit:4.12' compile 'com.android.support:appcompat-v7:23.1.1' } From that lib I can successfully get access of AdditionActivity on my Project but When I try to access About, getting error of java.lang.NoClassDefFoundError: Failed resolution of: Lcom/dhl/lib/R$layout;
Where I made mistake ? I can't found that point.
Here Is my Application app build.gradle which used library project
apply plugin: 'com.android.application' android { compileSdkVersion 23 buildToolsVersion "23.0.2" defaultConfig { applicationId "com.addtion.lib" minSdkVersion 16 targetSdkVersion 23 versionCode 1 versionName "1.0" } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } } dependencies { compile fileTree(include: ['*.jar'], dir: 'libs') testCompile 'junit:junit:4.12' compile 'com.android.support:appcompat-v7:23.1.1' provided files('libs/addition.jar') } ** Application Main Activity Class **
public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Button btn = (Button) findViewById(R.id.btn_callAdd); btn.setText("Call Addition Activity"); btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { startActivity(new Intent(MainActivity.this, AdditionActivity.class)); } }); ((Button) findViewById(R.id.btn_callAlert)).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { About.show(MainActivity.this, "Hello From Application", "Ok"); } }); } } 
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