Bundle的get(String key)方法返回一个对象。最好的方法是旋转键集，在每个键上调用get(String)，并在对象上使用toString()来输出它们。这对于基本类型最有效，但是对于没有实现toString()的对象，可能会遇到问题。

你可以使用for(字符串键:键){对象o = get(键);为了返回一个对象，在它上调用getClass().getName()来获得类型，然后做一组if name.equals("String")类型的事情来计算出你实际上应该调用哪个方法，以获得值?

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());
    }
}

以下是我用来获取非法(第三方)意图信息的方法:

Bundle bundle = intent.getExtras();
if (bundle != null) {
    for (String key : bundle.keySet()) {
        Log.e(TAG, key + " : " + (bundle.get(key) != null ? bundle.get(key) : "NULL"));
    }
}

确保在循环之前检查bundle是否为空。

Sorry if this is too verbose or too late, but this was the only way I could find to get the job done. The most complicating factor was the fact that java does not have pass by reference functions, so the get---Extra methods need a default to return and cannot modify a boolean value to tell whether or not the default value is being returned by chance, or because the results were not favorable. For this purpose, it would have been nicer to have the method raise an exception than to have it return a default.

我在这里找到了我的信息:Android意图文档。

    //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

设置文档

    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();
    }

这就是我如何定义实用工具方法来转储Intent的所有额外内容。

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");
    }
}

如果为了调试，你想要的只是一个字符串(OP暗示了，但没有显式声明)，只需在额外的Bundle上使用toString:

intent.getExtras().toString()

它返回一个字符串，例如:

Bundle[{key1=value1, key2=value2, key3=value3}]

Bundle.toString()(不幸的是，它是默认的Object.toString() javadoc，因此在这里非常无用。)

Bundle extras = getIntent().getExtras();
Set<String> ks = extras.keySet();
Iterator<String> iterator = ks.iterator();
while (iterator.hasNext()) {
    Log.d("KEY", iterator.next());
}

我想要一种方法来输出一个意图的内容到日志中，并且能够很容易地读取它，所以我想到了这里。我已经创建了一个LogUtil类，然后使用dumpIntent()方法@Pratik创建，并对其进行了一些修改。这是它的样子:

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());
        }
    }
}

希望这能帮助到一些人!

我注意到在Android源代码中，几乎每个操作都迫使Bundle解包它的数据。因此，如果(像我一样)你需要经常这样做以调试目的，下面是非常快速的输入:

Bundle extras = getIntent().getExtras();
extras.isEmpty(); // unparcel
System.out.println(extras);

你可以在一行代码中完成:

Log.d("intent URI", intent.toUri(0));

它输出如下内容:

“#意图;行动= android.intent.action.MAIN;类别= android.intent.category.LAUNCHER; launchFlags = 0 x10a00000;组件= com.mydomain.myapp / .StartActivity; sourceBounds = 12% 20870% 20276% 201167;l.profile = 0;端”

在这个字符串的末尾(我加粗的部分)，您可以找到额外的列表(在这个示例中只有一个额外的)。

这是根据toUri文档: URI包含了作为基本URI的意图数据，以及描述动作、类别、类型、标志、包、组件和额外内容的额外片段。

Pratik的实用方法的Kotlin版本，它转储了一个Intent的所有额外内容:

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")

}

一个用于调试模式下评估的Kotlin解决方案:

// list: List<Pair<String!, Any?>>?
val list = intent.extras?.keySet()?.map { it to (intent.extras?.get(it) ?: "null") }

Log.d("list", list.toString();

这将打印捆绑包中所有附加项的列表

在Kotlin中将它作为一个用“，”分隔的字符串!

val extras = intent?.extras?.keySet()?.map { "$it: ${intent.extras?.get(it)}" }?.joinToString { it }

基于ruX的答案。