出于调试原因,我想列出一个Intent的所有其他内容(及其值)。现在,获取钥匙不是问题
Set<String> keys = intent.getExtras().keySet();
但是获取键的值对我来说是一个,因为有些值是字符串,有些是布尔值...我如何才能在循环中获取这些值(遍历键)并将这些值写入日志文件?感谢您的提示!
出于调试原因,我想列出一个Intent的所有其他内容(及其值)。现在,获取钥匙不是问题
Set<String> keys = intent.getExtras().keySet();
但是获取键的值对我来说是一个,因为有些值是字符串,有些是布尔值...我如何才能在循环中获取这些值(遍历键)并将这些值写入日志文件?感谢您的提示!
Answers:
这是我用来获取有关未记录的(第三方)意图的信息的内容:
Bundle bundle = intent.getExtras();
if (bundle != null) {
for (String key : bundle.keySet()) {
Log.e(TAG, key + " : " + (bundle.get(key) != null ? bundle.get(key) : "NULL"));
}
}
确保bundle
在循环之前检查是否为null。
if (bundle == null) { return; }
FTW
Bundle bundle = data.getExtras();
data
目的在哪里。对于android初学者。
value = "null"
。
这就是我定义实用程序方法以转储所有Intent的方式。
import java.util.Iterator;
import java.util.Set;
import android.os.Bundle;
public static void dumpIntent(Intent i){
Bundle bundle = i.getExtras();
if (bundle != null) {
Set<String> keys = bundle.keySet();
Iterator<String> it = keys.iterator();
Log.e(LOG_TAG,"Dumping Intent start");
while (it.hasNext()) {
String key = it.next();
Log.e(LOG_TAG,"[" + key + "=" + bundle.get(key)+"]");
}
Log.e(LOG_TAG,"Dumping Intent end");
}
}
您可以在一行代码中完成此操作:
Log.d("intent URI", intent.toUri(0));
它输出类似:
“ #Intent; action = android.intent.action.MAIN; category = android.intent.category.LAUNCHER; launchFlags = 0x10a00000; component = com.mydomain.myapp / .StartActivity; sourceBounds = 12%20870%20276%201167; l .profile = 0;结束”
在此字符串的末尾(我加粗的部分),您可以找到附加项列表(此示例中仅一个附加项)。
根据toUri文档:“ URI包含Intent的数据作为基本URI,并带有描述操作,类别,类型,标志,包,组件和其他内容的附加片段。”
private TextView tv;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
tv = new TextView(this);
tv.setText("Extras: \n\r");
setContentView(tv);
StringBuilder str = new StringBuilder();
Bundle bundle = getIntent().getExtras();
if (bundle != null) {
Set<String> keys = bundle.keySet();
Iterator<String> it = keys.iterator();
while (it.hasNext()) {
String key = it.next();
str.append(key);
str.append(":");
str.append(bundle.get(key));
str.append("\n\r");
}
tv.setText(str.toString());
}
}
Bundle的get(String key)方法返回一个Object。最好的选择是遍历每个键上调用get(String)的键集,并使用Object上的toString()来输出它们。这将最适合基元,但是您可能会遇到未实现toString()的对象的问题。
Bundle extras = getIntent().getExtras();
Set<String> ks = extras.keySet();
Iterator<String> iterator = ks.iterator();
while (iterator.hasNext()) {
Log.d("KEY", iterator.next());
}
我想要一种方法,可以将意图的内容输出到日志中,并能够轻松读取它,所以这就是我的想法。我创建了一个LogUtil
类,然后使用了dumpIntent()
@Pratik创建的方法,并对其进行了一些修改。一切如下所示:
public class LogUtil {
private static final String TAG = "IntentDump";
public static void dumpIntent(Intent i){
Bundle bundle = i.getExtras();
if (bundle != null) {
Set<String> keys = bundle.keySet();
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.append("IntentDump \n\r");
stringBuilder.append("-------------------------------------------------------------\n\r");
for (String key : keys) {
stringBuilder.append(key).append("=").append(bundle.get(key)).append("\n\r");
}
stringBuilder.append("-------------------------------------------------------------\n\r");
Log.i(TAG, stringBuilder.toString());
}
}
}
希望这对某人有帮助!
抱歉,这太冗长或太迟,但这是我找到完成工作的唯一方法。最复杂的因素是java没有通过引用函数传递的事实,因此get--Extra方法需要默认值才能返回,并且不能修改布尔值来判断默认值是否是偶然返回的,或因为结果不理想。为此,让该方法引发异常比让其返回默认值更好。
我在这里找到了自己的信息:Android Intent文档。
//substitute your own intent here
Intent intent = new Intent();
intent.putExtra("first", "hello");
intent.putExtra("second", 1);
intent.putExtra("third", true);
intent.putExtra("fourth", 1.01);
// convert the set to a string array
String[] anArray = {};
Set<String> extras1 = (Set<String>) intent.getExtras().keySet();
String[] extras = (String[]) extras1.toArray(anArray);
// an arraylist to hold all of the strings
// rather than putting strings in here, you could display them
ArrayList<String> endResult = new ArrayList<String>();
for (int i=0; i<extras.length; i++) {
//try using as a String
String aString = intent.getStringExtra(extras[i]);
// is a string, because the default return value for a non-string is null
if (aString != null) {
endResult.add(extras[i] + " : " + aString);
}
// not a string
else {
// try the next data type, int
int anInt = intent.getIntExtra(extras[i], 0);
// is the default value signifying that either it is not an int or that it happens to be 0
if (anInt == 0) {
// is an int value that happens to be 0, the same as the default value
if (intent.getIntExtra(extras[i], 1) != 1) {
endResult.add(extras[i] + " : " + Integer.toString(anInt));
}
// not an int value
// try double (also works for float)
else {
double aDouble = intent.getDoubleExtra(extras[i], 0.0);
// is the same as the default value, but does not necessarily mean that it is not double
if (aDouble == 0.0) {
// just happens that it was 0.0 and is a double
if (intent.getDoubleExtra(extras[i], 1.0) != 1.0) {
endResult.add(extras[i] + " : " + Double.toString(aDouble));
}
// keep looking...
else {
// lastly check for boolean
boolean aBool = intent.getBooleanExtra(extras[i], false);
// same as default, but not necessarily not a bool (still could be a bool)
if (aBool == false) {
// it is a bool!
if (intent.getBooleanExtra(extras[i], true) != true) {
endResult.add(extras[i] + " : " + Boolean.toString(aBool));
}
else {
//well, the road ends here unless you want to add some more data types
}
}
// it is a bool
else {
endResult.add(extras[i] + " : " + Boolean.toString(aBool));
}
}
}
// is a double
else {
endResult.add(extras[i] + " : " + Double.toString(aDouble));
}
}
}
// is an int value
else {
endResult.add(extras[i] + " : " + Integer.toString(anInt));
}
}
}
// to display at the end
for (int i=0; i<endResult.size(); i++) {
Toast.makeText(this, endResult.get(i), Toast.LENGTH_SHORT).show();
}
Pratik实用程序方法的Kotlin版本,它转储了Intent的所有其他功能:
fun dumpIntent(intent: Intent) {
val bundle: Bundle = intent.extras ?: return
val keys = bundle.keySet()
val it = keys.iterator()
Log.d(TAG, "Dumping intent start")
while (it.hasNext()) {
val key = it.next()
Log.d(TAG,"[" + key + "=" + bundle.get(key)+"]");
}
Log.d(TAG, "Dumping intent finish")
}
for (key in bundle.keySet())
如果要调试的只是一个字符串(OP暗示但未明确说明),则只需toString
在extras上使用Bundle
:
intent.getExtras().toString()
它返回一个字符串,例如:
Bundle[{key1=value1, key2=value2, key3=value3}]
文档:Bundle.toString()(不幸的是,它是默认的Object.toString()
javadoc,因此在这里毫无用处。)