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Android example source code file (MethodAdapter.java)

This example Android source code file (MethodAdapter.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" TM.

Java - Android tags/keywords

methodadapter, methodlistener, object

The MethodAdapter.java Android example source code

/*
 * Copyright (C) 2008 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.tools.layoutlib.create;


/**
 * An adapter to make it easier to use {@link MethodListener}.
 * <p/>
 * The adapter calls the void {@link #onInvokeV(String, boolean, Object)} listener
 * for all types (I, L, F, D and A), returning 0 or null as appropriate.
 */
public class MethodAdapter implements MethodListener {
    /**
     * A stub method is being invoked.
     * <p/>
     * Known limitation: caller arguments are not available.
     *  
     * @param signature The signature of the method being invoked, composed of the
     *                  binary class name followed by the method descriptor (aka argument
     *                  types). Example: "com/foo/MyClass/InnerClass/printInt(I)V".
     * @param isNative True if the method was a native method.
     * @param caller The calling object. Null for static methods, "this" for instance methods.
     */
    public void onInvokeV(String signature, boolean isNative, Object caller) {
    }

    /**
     * Same as {@link #onInvokeV(String, boolean, Object)} but returns an integer or similar.
     * @see #onInvokeV(String, boolean, Object)
     * @return an integer, or a boolean, or a short or a byte.
     */
    public int onInvokeI(String signature, boolean isNative, Object caller) {
        onInvokeV(signature, isNative, caller);
        return 0;
    }

    /**
     * Same as {@link #onInvokeV(String, boolean, Object)} but returns a long.
     * @see #onInvokeV(String, boolean, Object)
     * @return a long.
     */
    public long onInvokeL(String signature, boolean isNative, Object caller) {
        onInvokeV(signature, isNative, caller);
        return 0;
    }

    /**
     * Same as {@link #onInvokeV(String, boolean, Object)} but returns a float.
     * @see #onInvokeV(String, boolean, Object)
     * @return a float.
     */
    public float onInvokeF(String signature, boolean isNative, Object caller) {
        onInvokeV(signature, isNative, caller);
        return 0;
    }

    /**
     * Same as {@link #onInvokeV(String, boolean, Object)} but returns a double.
     * @see #onInvokeV(String, boolean, Object)
     * @return a double.
     */
    public double onInvokeD(String signature, boolean isNative, Object caller) {
        onInvokeV(signature, isNative, caller);
        return 0;
    }

    /**
     * Same as {@link #onInvokeV(String, boolean, Object)} but returns an object.
     * @see #onInvokeV(String, boolean, Object)
     * @return an object.
     */
    public Object onInvokeA(String signature, boolean isNative, Object caller) {
        onInvokeV(signature, isNative, caller);
        return null;
    }
}

Other Android examples (source code examples)

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