com.yutils.http.Android Maven / Gradle / Ivy
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package com.yutils.http;
import java.io.ByteArrayOutputStream;
import java.io.OutputStream;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
/**
* 安卓常用方法，反射调用
*
* @author yujing 2021年9月11日15:56:45
*/
/*
用法：
//判断是否是安卓
Android.isAndroid()
//主线程中运行
Android.runOnUiThread { }
//Log
Android.Log("d", "tag", "内容")
//Toast
Android.Toast(context,"内容")
//bitmap转Byte数组
Android.bitmapToByteArray(bitmap)
*/
@SuppressWarnings("ALL")
public class Android {
//安卓里面的 Handler(Looper.getMainLooper());
private static Object handler;
static {
try {
if (handler == null) {
//获取 Looper.getMainLooper()
Class cLooper = Class.forName("android.os.Looper");
Method mGetMainLooper = cLooper.getMethod("getMainLooper");
Object looper = mGetMainLooper.invoke(null);
//构造 Handler handler = new Handler(Looper.getMainLooper());
Class cHandler = Class.forName("android.os.Handler");
Constructor conHandler = cHandler.getConstructor(cLooper);
handler = conHandler.newInstance(looper);
}
} catch (Exception e) {
Log("e", "错误", e.getMessage());
}
}
/**
* 判断是否是安卓项目
*
* @return 是否
*/
public static boolean isAndroid() {
return handler != null;
}
/**
* 在主线程中运行
* 实际逻辑：
* if (Looper.myLooper() == Looper.getMainLooper()) {
* runnable.run();
* } else {
* HANDLER.post(runnable);
* }
*
* @param runnable 执行的内容
* @return 是否成功
*/
public static boolean runOnUiThread(Runnable runnable) {
if (!isAndroid()) {
runnable.run();
return true;
}
try {
Class cLooper = Class.forName("android.os.Looper");
Method mGetMainLooper = cLooper.getMethod("getMainLooper");
Method mMyLooper = cLooper.getMethod("myLooper");
if (mGetMainLooper.invoke(null) == mMyLooper.invoke(null)) {
runnable.run();
} else {
Class classHandler = Class.forName("android.os.Handler");
Method mPost = classHandler.getMethod("post", Runnable.class);
mPost.invoke(handler, runnable);
}
return true;
} catch (Exception e) {
//Log("e", "错误", e.getMessage());
//如果是非安卓，返回false
return false;
}
}
/**
* 调用安卓Log，如Log.d("tag" ,"内容")
* 使用方法，如： Log(""内容")
*
* @param msg msg
* @return 是否成功
*/
public static boolean Log(String msg) {
return Log("i", "Android", msg, null);
}
/**
* 调用安卓Log，如Log.d("tag" ,"内容")
* 使用方法，如： Log("d","tag" ,"内容")
*
* @param type log——类型
* @param tag log——tag
* @param msg log——内容
* @return 是否成功
*/
public static boolean Log(String type, String tag, String msg) {
return Log(type, tag, msg, null);
}
/**
* 调用安卓Log，如Log.d("tag" ,"内容" , throwable)
* 使用方法，如： Log("d","tag" ,"内容" , throwable)
*
* @param type log——类型
* @param tag log——tag
* @param msg log——内容
* @param throwable log——throwable
* @return 是否成功
*/
public static boolean Log(String type, String tag, String msg, Throwable throwable) {
try {
Class cLog = Class.forName("android.util.Log");
Method method = cLog.getMethod(type, String.class, String.class, Throwable.class);
method.invoke(null, tag, " \n" + msg, throwable);
return true;
} catch (Exception e) {
//System.out.println("打印日志错误:" + e.getMessage() + "\n日志:\ttype:" + type + "\ttag:" + tag + "\tmsg:" + msg);
System.out.println("type:" + type + "\ttag:" + tag + "\tmsg:" + msg + ((throwable == null) ? "" : ("\tthrowable:" + throwable.toString())));
}
return false;
}
/**
* 显示Toast
* 实际逻辑：
* Toast toast=Toast.makeText(context, "msg", Toast.LENGTH_SHORT)
* toast.show()
*
* @param context context
* @param msg 内容
* @return 是否成功
*/
public static boolean Toast(Object context, String msg) {
return runOnUiThread(new Runnable() {
@Override
public void run() {
try {
Class cToast = Class.forName("android.widget.Toast");
Method mMakeText = cToast.getMethod("makeText", Class.forName("android.content.Context"), Class.forName("java.lang.CharSequence"), int.class);
Object obj = mMakeText.invoke(null, context, msg, 0);
Method mShow = cToast.getMethod("show");
mShow.invoke(obj);
} catch (Exception e) {
System.out.println("显示Toast错误:" + e.getMessage() + "\nmsg:" + msg);
}
}
});
}
/**
* bitmap转ByteArray
* 相当于：
* ByteArrayOutputStream baos = new ByteArrayOutputStream();
* bitmap.compress(Bitmap.CompressFormat.JPEG, 90, baos);
* baos.toByteArray();
*
* @param bitmap bitmap
* @return ByteArray
*/
public static byte[] bitmapToByteArray(Object bitmap) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
try {
Class cBitmap = Class.forName("android.graphics.Bitmap");
Class cCompressFormat = Class.forName("android.graphics.Bitmap$CompressFormat");
Object oFormat = null;
for (int i = 0; i < cCompressFormat.getEnumConstants().length; i++) {
//JPEG,PNG,WEBP
if ("JPEG".equals(cCompressFormat.getEnumConstants()[i].toString())) {
oFormat = cCompressFormat.getEnumConstants()[i];
break;
}
}
Method mCompress = cBitmap.getMethod("compress", cCompressFormat, int.class, OutputStream.class);
mCompress.invoke(bitmap, oFormat, 90, baos);
return baos.toByteArray();
} catch (Exception e) {
System.out.println("转换bitmap错误:" + e.getMessage());
}
return null;
}
}