1. 獲取debug狀態(tài)
/**
* 檢測是否處于Debug模式
*
* @return boolean
*/
public static boolean isDebugMode(Context context) {
ApplicationInfo info = context.getApplicationInfo();
if (info != null && (info.flags & ApplicationInfo.FLAG_DEBUGGABLE) != 0) {
return true;
}
return false;
}
2. 得到當前版本信息
/**
* 獲取軟件版本號
*/
public static String getVersonName(Context context) {
String versionName = null;
PackageManager pm = context.getPackageManager();
PackageInfo info = null;
try {
info = pm.getPackageInfo(context.getApplicationContext().getPackageName(), 0);
} catch (NameNotFoundException e) {
e.printStackTrace();
}
if (info != null) {
versionName = info.versionName;
}
return versionName;
}
3. 得到系統(tǒng)名
public static String getOsName() {
String MANUFACTURER = Build.MANUFACTURER;
return MANUFACTURER;
}
4. 判斷當前字符是數字
public static boolean isNumeric(String str) {
if (TextUtils.isEmpty(str)) {
return false;
}
Pattern pattern = Pattern.compile("[0-9]*");
Matcher isNum = pattern.matcher(str);
return isNum.matches();
}
5. 驗證手機號碼
/**
* 驗證手機格式
*/
public static boolean isMobileNumber(String mobileNumber) {
/*
* 移動：134、135、136、137、138、139、150、151、157(TD)、140(TD)、158、159、187、188
* 聯(lián)通：130、131、132、152、155、156、185、186 電信：133、153、180、189、（1349衛(wèi)通）
* 總結起來就是第一位必定為1，第二位必定為3或5或8，其他位置的可以為0-9 虛擬運營商：170
*/
// String regex = "[1][34578]\\d{9}";//
// "[1]"代表第1位為數字1，"[358]"代表第二位可以為3、5、8中的一個，"\\d{9}"代表后面是可以是0～9的數字，有9位。
String regex = "[1]\\d{10}";
if (TextUtils.isEmpty(mobileNumber)) {
return false;
} else {
return mobileNumber.matches(regex);
}
}
6. Bitmap顏色轉換
public static Bitmap translateBitmap(Bitmap bm, int r, int g, int b) {
if (bm == null)
return null;
try {
int w = bm.getWidth();
int h = bm.getHeight();
int size = w * h;
int[] array = new int[size];
bm.getPixels(array, 0, w, 0, 0, w, h);
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
if (array[i * w + j] != 0) {
int color = array[i * w + j];
int alpha = ((color & 0xff000000) >> 24);
int red = r;
int green = g;
int blue = b;
int pix = (alpha << 24) | (red << 16) | (green << 8) | blue;
array[i * w + j] = pix;
}
}
}
if (bm.isMutable()) //此情況可以直接改變像素點
{
try {
bm.setPixels(array, 0, w, 0, 0, w, h);
} catch (Exception e) {I
//設置像素點出錯
}
} else {
bm = Bitmap.createBitmap(array, w, h, Config.ARGB_8888);
}
return bm;
} catch (OutOfMemoryError e) {
e.printStackTrace();
}
return bm;
}
7. 通過View生成Bitmap
/**
* Returns a bitmap showing a screenshot of the view passed in.
*/
private Bitmap getBitmapFromView(View v) {
Bitmap bitmap = Bitmap.createBitmap(v.getWidth(), v.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
v.draw(canvas);
return bitmap;
}
8. dp,px 轉換
/**
* Converts an unpacked complex data value holding a dimension to its final floating
* point value. The two parameters <var>unit</var> and <var>value</var>
* are as in {@link #TYPE_DIMENSION}.
*
* @param unit The unit to convert from.
* @param value The value to apply the unit to.
* @param metrics Current display metrics to use in the conversion --
* supplies display density and scaling information.
*
* @return The complex floating point value multiplied by the appropriate
* metrics depending on its unit.
*/
public static float applyDimension(int unit, float value,
DisplayMetrics metrics)
{
switch (unit) {
case COMPLEX_UNIT_PX:
return value;
case COMPLEX_UNIT_DIP:
return value * metrics.density;
case COMPLEX_UNIT_SP:
return value * metrics.scaledDensity;
case COMPLEX_UNIT_PT:
return value * metrics.xdpi * (1.0f/72);
case COMPLEX_UNIT_IN:
return value * metrics.xdpi;
case COMPLEX_UNIT_MM:
return value * metrics.xdpi * (1.0f/25.4f);
}
return 0;
}
這個方法在TypedValue中
9. 判斷網絡狀態(tài)是否可以用
public static boolean isNetWorkAvailable(Context mContext) {
ConnectivityManager mConnectivity = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo nInfo = mConnectivity.getActiveNetworkInfo();
if (nInfo == null) {
return false;
} else {
return nInfo.isConnected();
}
}
10.得到當前設備名,例如，vivoX3,HUAWEIP7-L10
private String getModel() {
String model = android.os.Build.MODEL;
if (model != null) {
model = model.trim().replaceAll("\\s*", "");
} else {
model = "";
}
return model;
}
11. 獲取AndroidManifest.xml 中meta中的數據
PackageManager packageManager = mContext.getPackageManager();
String packageName = mContext.getPackageName();
ApplicationInfo applicationInfo=packageManager
.getApplicationInfo(packageName,PackageManager.GET_META_DATA);
applicationInfo.metaData.getXX(x,x);
12. 打開Apk文件進行安裝
Intent intent = new Intent();
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setAction(android.content.Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(file),
"application/vnd.android.package-archive");
context.startActivity(intent);
13.打開應用市場
Uri uri = Uri.parse("market://details?id=" + this.getPackageName());
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
try {
//可能手機上沒有安裝應用市場
startActivity(entry.jumpIntent);
} catch (ActivityNotFoundException e) {
}
14.調用系統(tǒng)方式分享文件
public static void videoShare(Activity activity, String videoPath, int requestcode) {
if (TextUtils.isEmpty(videoPath)) {
return;
}
Intent intent = new Intent(Intent.ACTION_SEND);
intent.setType("video/*"); //image/*
intent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(new File(videoPath)));
activity.startActivityForResult(Intent.createChooser(intent, activity.getString(R.string.share_text)), requestcode);
}
更多分享可以查看官方介紹：
Intent 分享源碼介紹
